path: root/doc/APIchanges (plain)
blob: b344e098c8037d519c70d020ad33605cb46aaa91

1	Never assume the API of libav* to be stable unless at least 1 month has passed
2	since the last major version increase or the API was added.
3
4	The last version increases were:
5	libavcodec: 2015-08-28
6	libavdevice: 2015-08-28
7	libavfilter: 2015-08-28
8	libavformat: 2015-08-28
9	libavresample: 2015-08-28
10	libpostproc: 2015-08-28
11	libswresample: 2015-08-28
12	libswscale: 2015-08-28
13	libavutil: 2015-08-28
14
15
16	API changes, most recent first:
17
18	2017-03-31 - 9033e8723c - lavu 55.57.100 - spherical.h
19	Add av_spherical_projection_name().
20	Add av_spherical_from_name().
21
22	2017-03-30 - 4cda23f1f1 - lavu 55.53.100 / 55.27.0 - hwcontext.h
23	Add av_hwframe_map() and associated AV_HWFRAME_MAP_* flags.
24	Add av_hwframe_ctx_create_derived().
25
26	2017-03-29 - bfdcdd6d82 - lavu 55.52.100 - avutil.h
27	add av_fourcc_make_string() function and av_fourcc2str() macro to replace
28	av_get_codec_tag_string() from lavc.
29
30	2017-03-27 - ddef3d902f - lavf 57.68.100 - avformat.h
31	Deprecate that demuxers export the stream rotation angle in AVStream.metadata
32	(via an entry named "rotate"). Use av_stream_get_side_data() with
33	AV_PKT_DATA_DISPLAYMATRIX instead, and read the rotation angle with
34	av_display_rotation_get(). The same is done for muxing. Instead of adding a
35	"rotate" entry to AVStream.metadata, AV_PKT_DATA_DISPLAYMATRIX side data has
36	to be added to the AVStream.
37
38	2017-03-23 - 7e4ba776a2 - lavc 57.85.101 - avcodec.h
39	vdpau hardware accelerated decoding now supports the new hwaccel API, which
40	can create the decoder context and allocate hardware frame automatically.
41	See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.
42
43	2017-03-23 - 156bd8278f - lavc 57.85.100 - avcodec.h
44	Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at
45	a later point.
46
47	2017-03-21 - fc9f14c7de - lavf 57.67.100 / 57.08.0 - avio.h
48	Add AVIO_SEEKABLE_TIME flag.
49
50	2017-03-21 - d682ae70b4 - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h
51	Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major
52	bump, and libavformat will behave as if it were always set.
53	Deprecate av_packet_merge_side_data() and av_packet_split_side_data().
54
55	2016-03-20 - 8200b16a9c - lavu 55.50.100 / 55.21.0 - imgutils.h
56	Add av_image_copy_uc_from(), a version of av_image_copy() for copying
57	from GPU mapped memory.
58
59	2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
60	Add AV_PIX_FMT_FLAG_BAYER pixel format flag.
61
62	2017-03-18 - 3796fb2692 - lavfi 6.77.100 - avfilter.h
63	Deprecate AVFilterGraph.resample_lavr_opts
64	It's never been used by avfilter nor passed to anything.
65
66	2017-02-10 - 1b7ffddb3a - lavu 55.48.100 / 55.33.0 - spherical.h
67	Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(),
68	and projection-specific properties (bound_left, bound_top, bound_right,
69	bound_bottom, padding) to AVSphericalMapping.
70
71	2017-03-02 - ade7c1a232 - lavc 57.81.104 - videotoolbox.h
72	AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
73	native decoder format. (The default value is not changed.)
74
75	2017-03-02 - 554bc4eea8 - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
76	Remove requirement to use AVOption or accessors to access certain fields
77	in AVFrame, AVCodecContext, and AVFormatContext that were previously
78	documented as "no direct access" allowed.
79
80	2017-02-13 - c1a5fca06f - lavc 57.80.100 - avcodec.h
81	Add AVCodecContext.hw_device_ctx.
82
83	2017-02-11 - e3af49b14b - lavu 55.47.100 - frame.h
84	Add AVFrame.opaque_ref.
85
86	2017-01-31 - 2eab48177d - lavu 55.46.100 / 55.20.0 - cpu.h
87	Add AV_CPU_FLAG_SSSE3SLOW.
88
89	2017-01-24 - c4618f842a - lavu 55.45.100 - channel_layout.h
90	Add av_get_extended_channel_layout()
91
92	2017-01-22 - 76c5a69e26 - lavu 55.44.100 - lfg.h
93	Add av_lfg_init_from_data().
94
95	2017-01-17 - 2a4a8653b6 - lavc 57.74.100 - vaapi.h
96	Deprecate struct vaapi_context and the vaapi.h installed header.
97	Callers should set AVCodecContext.hw_frames_ctx instead.
98
99	2017-01-12 - dbe9dbed31 - lavfi 6.69.100 - buffersink.h
100	Add av_buffersink_get_*() functions.
101
102	2017-01-06 - 9488032e10 - lavf 57.62.100 - avio.h
103	Add avio_get_dyn_buf()
104
105	2016-12-10 - f542b152aa - lavu 55.43.100 - imgutils.h
106	Add av_image_check_size2()
107
108	2016-12-07 - e7a6f8c972 - lavc 57.67.100 / 57.29.0 - avcodec.h
109	Add AV_PKT_DATA_SPHERICAL packet side data to export AVSphericalMapping
110	information from containers.
111
112	2016-12-07 - 8f58ecc344 - lavu 55.42.100 / 55.30.0 - spherical.h
113	Add AV_FRAME_DATA_SPHERICAL value, av_spherical_alloc() API and
114	AVSphericalMapping type to export and describe spherical video properties.
115
116	2016-11-18 - 2ab50647ff - lavf 57.58.100 - avformat.h
117	Add av_stream_add_side_data().
118
119	2016-11-13 - 775a8477b7 - lavu 55.39.100 - hwcontext_vaapi.h
120	Add AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE.
121
122	2016-11-13 - a8d51bb424 - lavu 55.38.100 - hwcontext_vaapi.h
123	Add driver quirks field to VAAPI-specific hwdevice and enum with
124	members AV_VAAPI_DRIVER_QUIRK_* to represent its values.
125
126	2016-11-10 - 638b216d4f - lavu 55.36.100 - pixfmt.h
127	Add AV_PIX_FMT_GRAY12(LE/BE).
128
129	-------- 8< --------- FFmpeg 3.2 was cut here -------- 8< ---------
130
131	2016-10-24 - 73ead47 - lavf 57.55.100 - avformat.h
132	Add AV_DISPOSITION_TIMED_THUMBNAILS
133
134	2016-10-24 - a246fef - lavf 57.54.100 - avformat.h
135	Add avformat_init_output() and AVSTREAM_INIT_IN_ macros
136
137	2016-10-22 - f5495c9 - lavu 55.33.100 - avassert.h
138	Add av_assert0_fpu() / av_assert2_fpu()
139
140	2016-10-07 - 3f9137c / 32c8359 - lavc 57.61.100 / 57.24.0 - avcodec.h
141	Decoders now export the frame timestamp as AVFrame.pts. It was
142	previously exported as AVFrame.pkt_pts, which is now deprecated.
143
144	Note: When decoding, AVFrame.pts uses the stream/packet timebase,
145	and not the codec timebase.
146
147	2016-09-28 - eba0414 - lavu 55.32.100 / 55.16.0 - hwcontext.h hwcontext_qsv.h
148	Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific
149	hwcontext definitions.
150
151	2016-09-26 - 32c25f0 - lavc 57.59.100 / 57.23.0 - avcodec.h
152	AVCodecContext.hw_frames_ctx now may be used by decoders.
153
154	2016-09-27 - f0b6f72 - lavf 57.51.100 - avformat.h
155	Add av_stream_get_codec_timebase()
156
157	2016-09-27 - 23c0779 - lswr 2.2.100 - swresample.h
158	Add swr_build_matrix().
159
160	2016-09-23 - 30d3e36 - lavc 57.58.100 - avcodec.h
161	Add AV_CODEC_CAP_AVOID_PROBING codec capability flag.
162
163	2016-09-14 - ae1dd0c - lavf 57.49.100 - avformat.h
164	Add avformat_transfer_internal_stream_timing_info helper to help with stream
165	copy.
166
167	2016-08-29 - 4493390 - lavfi 6.58.100 - avfilter.h
168	Add AVFilterContext.nb_threads.
169
170	2016-08-15 - c3c4c72 - lavc 57.53.100 - avcodec.h
171	Add trailing_padding to AVCodecContext to match the corresponding
172	field in AVCodecParameters.
173
174	2016-08-15 - b746ed7 - lavc 57.52.100 - avcodec.h
175	Add a new API for chained BSF filters and passthrough (null) BSF --
176	av_bsf_list_alloc(), av_bsf_list_free(), av_bsf_list_append(),
177	av_bsf_list_append2(), av_bsf_list_finalize(), av_bsf_list_parse_str()
178	and av_bsf_get_null_filter().
179
180	2016-08-04 - 82a33c8 - lavf 57.46.100 - avformat.h
181	Add av_get_frame_filename2()
182
183	2016-07-09 - 775389f / 90f469a - lavc 57.50.100 / 57.20.0 - avcodec.h
184	Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH.
185
186	2016-06-30 - c1c7e0ab - lavf 57.41.100 - avformat.h
187	Moved codecpar field from AVStream to the end of the struct, so that
188	the following private fields are in the same location as in FFmpeg 3.0 (lavf 57.25.100).
189
190	2016-06-30 - 042fb69d - lavu 55.28.100 - frame.h
191	Moved hw_frames_ctx field from AVFrame to the end of the struct, so that
192	the following private fields are in the same location as in FFmpeg 3.0 (lavu 55.17.103).
193
194	2016-06-29 - 1a751455 - lavfi 6.47.100 - avfilter.h
195	Fix accidental ABI breakage in AVFilterContext.
196	ABI was broken in 8688d3a, lavfi 6.42.100 and released as ffmpeg 3.1.
197
198	Because of this, ffmpeg and ffplay built against lavfi>=6.42.100 will not be
199	compatible with lavfi>=6.47.100. Potentially also affects other users of
200	libavfilter if they are using one of the affected fields.
201
202	-------- 8< --------- FFmpeg 3.1 was cut here -------- 8< ---------
203
204	2016-06-26 - 481f320 / 1c9e861 - lavu 55.27.100 / 55.13.0 - hwcontext.h
205	Add av_hwdevice_ctx_create().
206
207	2016-06-26 - b95534b / e47b8bb - lavc 57.48.101 / 57.19.1 - avcodec.h
208	Adjust values for JPEG 2000 profiles.
209
210	2016-06-23 - 5d75e46 / db7968b - lavf 57.40.100 / 57.7.0 - avio.h
211	Add AVIODataMarkerType, write_data_type, ignore_boundary_point and
212	avio_write_marker.
213
214	2016-06-23 - abb3cc4 / 0c4468d - lavu 55.26.100 / 55.12.0 - opt.h
215	Add av_stereo3d_type_name() and av_stereo3d_from_name().
216
217	2016-06-22 - 3689efe / c46db38 - lavu 55.25.100 / 55.11.0 - hwcontext_dxva2.h
218	Add new installed header with DXVA2-specific hwcontext definitions.
219
220	2016-04-27 - fb91871 - lavu 55.23.100 - log.h
221	Add a new function av_log_format_line2() which returns number of bytes
222	written to the target buffer.
223
224	2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
225	Add a new audio/video encoding and decoding API with decoupled input
226	and output -- avcodec_send_packet(), avcodec_receive_frame(),
227	avcodec_send_frame() and avcodec_receive_packet().
228
229	2016-04-17 - af9cac1 / 33d1898 - lavc 57.35.100 / 57.15.0 - avcodec.h
230	Add a new bitstream filtering API working with AVPackets.
231	Deprecate the old bitstream filtering API.
232
233	2016-04-14 - 8688d3a / 07a844f - lavfi 6.42.100 / 6.3.0 - avfilter.h
234	Add AVFilterContext.hw_device_ctx.
235
236	2016-04-14 - 28abb21 / 551c677 - lavu 55.22.100 / 55.9.0 - hwcontext_vaapi.h
237	Add new installed header with VAAPI-specific hwcontext definitions.
238
239	2016-04-14 - afccfaf / b1f01e8 - lavu 55.21.100 / 55.7.0 - hwcontext.h
240	Add AVHWFramesConstraints and associated API.
241
242	2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
243	Add AVStream.codecpar, deprecate AVStream.codec.
244
245	2016-04-02 - e8a9b64 - lavu 55.20.100 - base64.h
246	Add AV_BASE64_DECODE_SIZE(x) macro.
247
248	2016-xx-xx - lavc 57.33.100 / 57.14.0 - avcodec.h
249	f9b1cf1 / 998e1b8 - Add AVCodecParameters and its related API.
250	e6053b3 / a806834 - Add av_get_audio_frame_duration2().
251
252	2016-03-11 - 6d8ab35 - lavf/lavc 57.28.101
253	Add requirement to bitstream filtering API that returned packets with
254	size == 0 and side_data_elems == 0 are to be skipped by the caller.
255
256	2016-03-04 - 9362973 - lavf 57.28.100
257	Add protocol blacklisting API
258
259	2016-02-28 - 4dd4d53 - lavc 57.27.101
260	Validate AVFrame returned by get_buffer2 to have required
261	planes not NULL and unused planes set to NULL as crashes
262	and buffer overflow are possible with certain streams if
263	that is not the case.
264
265	2016-02-26 - 30e7685 - lavc 57.27.100 - avcodec.h
266	"flags2" decoding option now allows the flag "ass_ro_flush_noop" preventing
267	the reset of the ASS ReadOrder field on flush. This affects the content of
268	AVSubtitles.rects[N]->ass when "sub_text_format" is set to "ass" (see
269	previous entry).
270
271	2016-02-26 - 2941282 - lavc 57.26.100 - avcodec.h
272	Add a "sub_text_format" subtitles decoding option allowing the values "ass"
273	(recommended) and "ass_with_timings" (not recommended, deprecated, default).
274	The default value for this option will change to "ass" at the next major
275	libavcodec version bump.
276
277	The current default is "ass_with_timings" for compatibility. This means that
278	all subtitles text decoders currently still output ASS with timings printed
279	as strings in the AVSubtitles.rects[N]->ass fields.
280
281	Setting "sub_text_format" to "ass" allows a better timing accuracy (ASS
282	timing is limited to a 1/100 time base, so this is relevant for any subtitles
283	format needing a bigger one), ease timing adjustments, and prevents the need
284	of removing the timing from the decoded string yourself. This form is also
285	known as "the Matroska form". The timing information (start time, duration)
286	can be found in the AVSubtitles fields.
287
288	2016-02-24 - 7e49cdd / 7b3214d0 - lavc 57.25.100 / 57.13.0 - avcodec.h
289	Add AVCodecContext.hw_frames_ctx.
290
291	2016-02-24 - 1042402 / b3dd30d - lavfi 6.36.100 / 6.2.0 - avfilter.h
292	avfilter.h - Add AVFilterLink.hw_frames_ctx.
293	buffersrc.h - Add AVBufferSrcParameters and functions for handling it.
294
295	2016-02-23 - 14f7a3d - lavc 57.25.100
296	Add AV_PKT_DATA_MPEGTS_STREAM_ID for exporting the MPEGTS stream ID.
297
298	2016-02-18 - 08acab8 - lavu 55.18.100 - audio_fifo.h
299	Add av_audio_fifo_peek_at().
300
301	2016-xx-xx - lavu 55.18.100 / 55.6.0
302	26abd51 / 721a4ef buffer.h - Add av_buffer_pool_init2().
303	1a70878 / 89923e4 hwcontext.h - Add a new installed header hwcontext.h with a new API
304	for handling hwaccel frames.
305	6992276 / ad884d1 hwcontext_cuda.h - Add a new installed header hwcontext_cuda.h with
306	CUDA-specific hwcontext definitions.
307	d779d8d / a001ce3 hwcontext_vdpau.h - Add a new installed header hwcontext_vdpau.h with
308	VDPAU-specific hwcontext definitions.
309	63c3e35 / 7bc780c pixfmt.h - Add AV_PIX_FMT_CUDA.
310
311	-------- 8< --------- FFmpeg 3.0 was cut here -------- 8< ---------
312
313	2016-02-10 - bc9a596 / 9f61abc - lavf 57.25.100 / 57.3.0 - avformat.h
314	Add AVFormatContext.opaque, io_open and io_close, allowing custom IO
315
316	2016-02-01 - 1dba837 - lavf 57.24.100 - avformat.h, avio.h
317	Add protocol_whitelist to AVFormatContext, AVIOContext
318
319	2016-01-31 - 66e9d2f - lavu 55.17.100 - frame.h
320	Add AV_FRAME_DATA_GOP_TIMECODE for exporting MPEG1/2 GOP timecodes.
321
322	2016-01-01 - 5e8b053 / 2c68113 - lavc 57.21.100 / 57.12.0 - avcodec.h
323	Add AVCodecDescriptor.profiles and avcodec_profile_name().
324
325	2015-12-28 - 1f9139b - lavf 57.21.100 - avformat.h
326	Add automatic bitstream filtering; add av_apply_bitstream_filters()
327
328	2015-12-22 - 39a09e9 - lavfi 6.21.101 - avfilter.h
329	Deprecate avfilter_link_set_closed().
330	Applications are not supposed to mess with links,
331	they should close the sinks.
332
333	2015-12-17 - lavc 57.18.100 / 57.11.0 - avcodec.h dirac.h
334	xxxxxxx - Add av_packet_add_side_data().
335	xxxxxxx - Add AVCodecContext.coded_side_data.
336	xxxxxxx - Add AVCPBProperties API.
337	xxxxxxx - Add a new public header dirac.h containing
338	av_dirac_parse_sequence_header()
339
340	2015-12-11 - 676a93f - lavf 57.20.100 - avformat.h
341	Add av_program_add_stream_index()
342
343	2015-11-29 - 93fb4a4 - lavc 57.16.101 - avcodec.h
344	Deprecate rtp_callback without replacement, i.e. it won't be possible to
345	get image slices before the full frame is encoded any more. The libavformat
346	rtpenc muxer can still be used for RFC-2190 packetization.
347
348	2015-11-22 - fe20e34 - lavc 57.16.100 - avcodec.h
349	Add AV_PKT_DATA_FALLBACK_TRACK for making fallback associations between
350	streams.
351
352	2015-11-22 - ad317c9 - lavf 57.19.100 - avformat.h
353	Add av_stream_new_side_data().
354
355	2015-11-22 - e12f403 - lavu 55.8.100 - xtea.h
356	Add av_xtea_le_init and av_xtea_le_crypt
357
358	2015-11-18 - lavu 55.7.100 - mem.h
359	Add av_fast_mallocz()
360
361	2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h
362	xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement,
363	it resets the packet in a more consistent way.
364	xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases.
365	Use av_packet_ref() to make a non-refcounted AVPacket refcounted.
366	xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
367	They match the AVFrame functions with the same name.
368
369	2015-10-27 - 1e477a9 - lavu 55.5.100 - cpu.h
370	Add AV_CPU_FLAG_AESNI.
371
372	2015-10-22 - ee573b4 / a17a766 - lavc 57.9.100 / 57.5.0 - avcodec.h
373	Add data and linesize array to AVSubtitleRect, to be used instead of
374	the ones from the embedded AVPicture.
375
376	2015-10-22 - 866a417 / dc923bc - lavc 57.8.100 / 57.0.0 - qsv.h
377	Add an API for allocating opaque surfaces.
378
379	2015-10-15 - 2c2d162 - lavf 57.4.100
380	Remove the latm demuxer that was a duplicate of the loas demuxer.
381
382	2015-10-14 - b994788 / 11c5f43 - lavu 55.4.100 / 55.2.0 - dict.h
383	Change return type of av_dict_copy() from void to int, so that a proper
384	error code can be reported.
385
386	2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / 57.2.0 - avcodec.h
387	Change type of AVPacket.duration from int to int64_t.
388
389	2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / 57.2.0 - d3d11va.h
390	Add av_d3d11va_alloc_context(). This function must from now on be used for
391	allocating AVD3D11VAContext.
392
393	2015-09-15 - lavf 57.2.100 - avformat.h
394	probesize and max_analyze_duration switched to 64bit, both
395	are only accessible through AVOptions
396
397	2015-09-15 - lavf 57.1.100 - avformat.h
398	bit_rate was changed to 64bit, make sure you update any
399	printf() or other type sensitive code
400
401	2015-09-15 - lavc 57.2.100 - avcodec.h
402	bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update
403	any printf() or other type sensitive code
404
405	2015-09-07 - lavu 55.0.100 / 55.0.0
406	c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
407	f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int
408	and drop bit packing.
409	151aa2e / 2268db2 - Add step, offset, and depth to AVComponentDescriptor to replace
410	the deprecated step_minus1, offset_plus1, and depth_minus1.
411
412	-------- 8< --------- FFmpeg 2.8 was cut here -------- 8< ---------
413
414	2015-08-27 - 1dd854e1 - lavc 56.58.100 - vaapi.h
415	Deprecate old VA-API context (vaapi_context) fields that were only
416	set and used by libavcodec. They are all managed internally now.
417
418	2015-08-19 - 9f8e57ef - lavu 54.31.100 - pixfmt.h
419	Add a unique pixel format for VA-API (AV_PIX_FMT_VAAPI) that
420	indicates the nature of the underlying storage: a VA surface. This
421	yields the same value as AV_PIX_FMT_VAAPI_VLD.
422	Deprecate old VA-API related pixel formats: AV_PIX_FMT_VAAPI_MOCO,
423	AV_PIX_FMT_VAAPI_IDCT, AV_PIX_FMT_VAAPI_VLD.
424
425	2015-08-02 - lavu 54.30.100 / 54.17.0
426	9ed59f1 / 7a7df34c - Add av_blowfish_alloc().
427	a130ec9 / ae365453 - Add av_rc4_alloc().
428	9ca1997 / 5d8bea3b - Add av_xtea_alloc().
429	3cf08e9 / d9e8b47e - Add av_des_alloc().
430
431	2015-07-27 - lavc 56.56.100 / 56.35.0 - avcodec.h
432	94d68a4 / 7c6eb0a1 - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*.
433	444e987 / def97856 - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*.
434	29d147c / 059a9348 - Rename FF_INPUT_BUFFER_PADDING_SIZE and FF_MIN_BUFFER_SIZE
435	to AV_INPUT_BUFFER_PADDING_SIZE and AV_INPUT_BUFFER_MIN_SIZE.
436
437	2015-07-22 - c40ecff - lavc 56.51.100 - avcodec.h
438	Add AV_PKT_DATA_QUALITY_STATS to export the quality value, PSNR, and pict_type
439	of an AVPacket.
440
441	2015-07-16 - 8dad213 - lavc 56.49.100
442	Add av_codec_get_codec_properties(), FF_CODEC_PROPERTY_LOSSLESS
443	and FF_CODEC_PROPERTY_CLOSED_CAPTIONS
444
445	2015-07-03 - d563e13 / 83212943 - lavu 54.28.100 / 56.15.0
446	Add av_version_info().
447
448	-------- 8< --------- FFmpeg 2.7 was cut here -------- 8< ---------
449
450	2015-06-04 - cc17b43 - lswr 1.2.100
451	Add swr_get_out_samples()
452
453	2015-05-27 - c312bfa - lavu 54.26.100 - cpu.h
454	Add AV_CPU_FLAG_AVXSLOW.
455
456	2015-05-26 - 1fb9b2a - lavu 54.25.100 - rational.h
457	Add av_q2intfloat().
458
459	2015-05-13 - cc48409 / e7c5e17 - lavc 56.39.100 / 56.23.0
460	Add av_vda_default_init2.
461
462	2015-05-11 - 541d75f - lavf 56.33.100 - avformat.h
463	Add AVOpenCallback AVFormatContext.open_cb
464
465	2015-05-07 - a7dd933 - 56.38.100 - avcodec.h
466	Add av_packet_side_data_name().
467
468	2015-05-07 - 01e59d4 - 56.37.102 - avcodec.h
469	Add FF_PROFILE_VP9_2 and FF_PROFILE_VP9_3.
470
471	2015-05-04 - 079b7f6 - 56.37.100 - avcodec.h
472	Add FF_PROFILE_VP9_0 and FF_PROFILE_VP9_1.
473
474	2015-04-22 - 748d481 - lavf 56.31.100 - avformat.h
475	Add AVFMT_FLAG_FAST_SEEK flag. Some formats (initially mp3) use it to enable
476	fast, but inaccurate seeking.
477
478	2015-04-20 - 8e8219e / c253340 - lavu 54.23.100 / 54.12.0 - log.h
479	Add AV_LOG_TRACE for extremely verbose debugging.
480
481	2015-04-02 - 26e0e393 - lavf 56.29.100 - avio.h
482	Add AVIODirEntryType.AVIO_ENTRY_SERVER.
483	Add AVIODirEntryType.AVIO_ENTRY_SHARE.
484	Add AVIODirEntryType.AVIO_ENTRY_WORKGROUP.
485
486	2015-03-31 - 3188696 - lavu 54.22.100 - avstring.h
487	Add av_append_path_component()
488
489	2015-03-27 - 184084c - lavf 56.27.100 - avio.h url.h
490	New directory listing API.
491
492	Add AVIODirEntryType enum.
493	Add AVIODirEntry, AVIODirContext structures.
494	Add avio_open_dir(), avio_read_dir(), avio_close_dir(), avio_free_directory_entry().
495	Add ff_alloc_dir_entry().
496	Extend URLProtocol with url_open_dir(), url_read_dir(), url_close_dir().
497
498	2015-03-29 - 268ff17 / c484561 - lavu 54.21.100 / 54.10.0 - pixfmt.h
499	Add AV_PIX_FMT_MMAL for MMAL hardware acceleration.
500
501	2015-03-19 - 11fe56c - 56.29.100 / lavc 56.22.0
502	Add FF_PROFILE_DTS_EXPRESS.
503
504	-------- 8< --------- FFmpeg 2.6 was cut here -------- 8< ---------
505
506	2015-03-04 - cca4476 - lavf 56.25.100
507	Add avformat_flush()
508
509	2015-03-03 - 81a9126 - lavf 56.24.100
510	Add avio_put_str16be()
511
512	2015-02-19 - 560eb71 / 31d2039 - lavc 56.23.100 / 56.13.0
513	Add width, height, coded_width, coded_height and format to
514	AVCodecParserContext.
515
516	2015-02-19 - e375511 / 5b1d9ce - lavu 54.19.100 / 54.9.0
517	Add AV_PIX_FMT_QSV for QSV hardware acceleration.
518
519	2015-02-14 - ba22295 - lavc 56.21.102
520	Deprecate VIMA decoder.
521
522	2015-01-27 - 62a82c6 / 728685f - lavc 56.21.100 / 56.12.0, lavu 54.18.100 / 54.8.0 - avcodec.h, frame.h
523	Add AV_PKT_DATA_AUDIO_SERVICE_TYPE and AV_FRAME_DATA_AUDIO_SERVICE_TYPE for
524	storing the audio service type as side data.
525
526	2015-01-16 - a47c933 - lavf 56.19.100 - avformat.h
527	Add data_codec and data_codec_id for storing codec of data stream
528
529	2015-01-11 - 007c33d - lavd 56.4.100 - avdevice.h
530	Add avdevice_list_input_sources().
531	Add avdevice_list_output_sinks().
532
533	2014-12-25 - d7aaeea / c220a60 - lavc 56.19.100 / 56.10.0 - vdpau.h
534	Add av_vdpau_get_surface_parameters().
535
536	2014-12-25 - ddb9a24 / 6c99c92 - lavc 56.18.100 / 56.9.0 - avcodec.h
537	Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context().
538
539	2014-12-25 - d16079a / 57b6704 - lavc 56.17.100 / 56.8.0 - avcodec.h
540	Add AVCodecContext.sw_pix_fmt.
541
542	2014-12-04 - 6e9ac02 - lavc 56.14.100 - dv_profile.h
543	Add av_dv_codec_profile2().
544
545	-------- 8< --------- FFmpeg 2.5 was cut here -------- 8< ---------
546
547	2014-11-21 - ab922f9 - lavu 54.15.100 - dict.h
548	Add av_dict_get_string().
549
550	2014-11-18 - a54a51c - lavu 54.14.100 - float_dsp.h
551	Add avpriv_float_dsp_alloc().
552
553	2014-11-16 - 6690d4c3 - lavf 56.13.100 - avformat.h
554	Add AVStream.recommended_encoder_configuration with accessors.
555
556	2014-11-16 - bee5844d - lavu 54.13.100 - opt.h
557	Add av_opt_serialize().
558
559	2014-11-16 - eec69332 - lavu 54.12.100 - opt.h
560	Add av_opt_is_set_to_default().
561
562	2014-11-06 - 44fa267 / 5e80fb7 - lavc 56.11.100 / 56.6.0 - vorbis_parser.h
563	Add a public API for parsing vorbis packets.
564
565	2014-10-15 - 17085a0 / 7ea1b34 - lavc 56.7.100 / 56.5.0 - avcodec.h
566	Replace AVCodecContext.time_base used for decoding
567	with AVCodecContext.framerate.
568
569	2014-10-15 - 51c810e / d565fef1 - lavc 56.6.100 / 56.4.0 - avcodec.h
570	Add AV_HWACCEL_FLAG_IGNORE_LEVEL flag to av_vdpau_bind_context().
571
572	2014-10-13 - da21895 / 2df0c32e - lavc 56.5.100 / 56.3.0 - avcodec.h
573	Add AVCodecContext.initial_padding. Deprecate the use of AVCodecContext.delay
574	for audio encoding.
575
576	2014-10-08 - bb44f7d / 5a419b2 - lavu 54.10.100 / 54.4.0 - pixdesc.h
577	Add API to return the name of frame and context color properties.
578
579	2014-10-06 - a61899a / e3e158e - lavc 56.3.100 / 56.2.0 - vdpau.h
580	Add av_vdpau_bind_context(). This function should now be used for creating
581	(or resetting) a AVVDPAUContext instead of av_vdpau_alloc_context().
582
583	2014-10-02 - cdd6f05 - lavc 56.2.100 - avcodec.h
584	2014-10-02 - cdd6f05 - lavu 54.9.100 - frame.h
585	Add AV_FRAME_DATA_SKIP_SAMPLES. Add lavc CODEC_FLAG2_SKIP_MANUAL and
586	AVOption "skip_manual", which makes lavc export skip information via
587	AV_FRAME_DATA_SKIP_SAMPLES AVFrame side data, instead of skipping and
588	discarding samples automatically.
589
590	2014-10-02 - 0d92b0d - lavu 54.8.100 - avstring.h
591	Add av_match_list()
592
593	2014-09-24 - ac68295 - libpostproc 53.1.100
594	Add visualization support
595
596	2014-09-19 - 6edd6a4 - lavc 56.1.101 - dv_profile.h
597	deprecate avpriv_dv_frame_profile2(), which was made public by accident.
598
599
600	-------- 8< --------- FFmpeg 2.4 was cut here -------- 8< ---------
601
602	2014-08-25 - 215db29 / b263f8f - lavf 56.3.100 / 56.3.0 - avformat.h
603	Add AVFormatContext.max_ts_probe.
604
605	2014-08-28 - f30a815 / 9301486 - lavc 56.1.100 / 56.1.0 - avcodec.h
606	Add AV_PKT_DATA_STEREO3D to export container-level stereo3d information.
607
608	2014-08-23 - 8fc9bd0 - lavu 54.7.100 - dict.h
609	AV_DICT_DONT_STRDUP_KEY and AV_DICT_DONT_STRDUP_VAL arguments are now
610	freed even on error. This is consistent with the behaviour all users
611	of it we could find expect.
612
613	2014-08-21 - 980a5b0 - lavu 54.6.100 - frame.h motion_vector.h
614	Add AV_FRAME_DATA_MOTION_VECTORS side data and AVMotionVector structure
615
616	2014-08-16 - b7d5e01 - lswr 1.1.100 - swresample.h
617	Add AVFrame based API
618
619	2014-08-16 - c2829dc - lavu 54.4.100 - dict.h
620	Add av_dict_set_int helper function.
621
622	2014-08-13 - c8571c6 / 8ddc326 - lavu 54.3.100 / 54.3.0 - mem.h
623	Add av_strndup().
624
625	2014-08-13 - 2ba4577 / a8c104a - lavu 54.2.100 / 54.2.0 - opt.h
626	Add av_opt_get_dict_val/set_dict_val with AV_OPT_TYPE_DICT to support
627	dictionary types being set as options.
628
629	2014-08-13 - afbd4b8 - lavf 56.01.0 - avformat.h
630	Add AVFormatContext.event_flags and AVStream.event_flags for signaling to
631	the user when events happen in the file/stream.
632
633	2014-08-10 - 78eaaa8 / fb1ddcd - lavr 2.1.0 - avresample.h
634	Add avresample_convert_frame() and avresample_config().
635
636	2014-08-10 - 78eaaa8 / fb1ddcd - lavu 54.1.100 / 54.1.0 - error.h
637	Add AVERROR_INPUT_CHANGED and AVERROR_OUTPUT_CHANGED.
638
639	2014-08-08 - 3841f2a / d35b94f - lavc 55.73.102 / 55.57.4 - avcodec.h
640	Deprecate FF_IDCT_XVIDMMX define and xvidmmx idct option.
641	Replaced by FF_IDCT_XVID and xvid respectively.
642
643	2014-08-08 - 5c3c671 - lavf 55.53.100 - avio.h
644	Add avio_feof() and deprecate url_feof().
645
646	2014-08-07 - bb78903 - lsws 2.1.3 - swscale.h
647	sws_getContext is not going to be removed in the future.
648
649	2014-08-07 - a561662 / ad1ee5f - lavc 55.73.101 / 55.57.3 - avcodec.h
650	reordered_opaque is not going to be removed in the future.
651
652	2014-08-02 - 28a2107 - lavu 52.98.100 - pixelutils.h
653	Add pixelutils API with SAD functions
654
655	2014-08-04 - 6017c98 / e9abafc - lavu 52.97.100 / 53.22.0 - pixfmt.h
656	Add AV_PIX_FMT_YA16 pixel format for 16 bit packed gray with alpha.
657
658	2014-08-04 - 4c8bc6f / e96c3b8 - lavu 52.96.101 / 53.21.1 - avstring.h
659	Rename AV_PIX_FMT_Y400A to AV_PIX_FMT_YA8 to better identify the format.
660	An alias pixel format and color space name are provided for compatibility.
661
662	2014-08-04 - 073c074 / d2962e9 - lavu 52.96.100 / 53.21.0 - pixdesc.h
663	Support name aliases for pixel formats.
664
665	2014-08-03 - 71d008e / 1ef9e83 - lavc 55.72.101 / 55.57.2 - avcodec.h
666	2014-08-03 - 71d008e / 1ef9e83 - lavu 52.95.100 / 53.20.0 - frame.h
667	Deprecate AVCodecContext.dtg_active_format and use side-data instead.
668
669	2014-08-03 - e680c73 - lavc 55.72.100 - avcodec.h
670	Add get_pixels() to AVDCT
671
672	2014-08-03 - 9400603 / 9f17685 - lavc 55.71.101 / 55.57.1 - avcodec.h
673	Deprecate unused FF_IDCT_IPP define and ipp avcodec option.
674	Deprecate unused FF_DEBUG_PTS define and pts avcodec option.
675	Deprecate unused FF_CODER_TYPE_DEFLATE define and deflate avcodec option.
676	Deprecate unused FF_DCT_INT define and int avcodec option.
677	Deprecate unused avcodec option scenechange_factor.
678
679	2014-07-30 - ba3e331 - lavu 52.94.100 - frame.h
680	Add av_frame_side_data_name()
681
682	2014-07-29 - 80a3a66 / 3a19405 - lavf 56.01.100 / 56.01.0 - avformat.h
683	Add mime_type field to AVProbeData, which now MUST be initialized in
684	order to avoid uninitialized reads of the mime_type pointer, likely
685	leading to crashes.
686	Typically, this means you will do 'AVProbeData pd = { 0 };' instead of
687	'AVProbeData pd;'.
688
689	2014-07-29 - 31e0b5d / 69e7336 - lavu 52.92.100 / 53.19.0 - avstring.h
690	Make name matching function from lavf public as av_match_name().
691
692	2014-07-28 - 2e5c8b0 / c5fca01 - lavc 55.71.100 / 55.57.0 - avcodec.h
693	Add AV_CODEC_PROP_REORDER to mark codecs supporting frame reordering.
694
695	2014-07-27 - ff9a154 - lavf 55.50.100 - avformat.h
696	New field int64_t probesize2 instead of deprecated
697	field int probesize.
698
699	2014-07-27 - 932ff70 - lavc 55.70.100 - avdct.h
700	Add AVDCT / avcodec_dct_alloc() / avcodec_dct_init().
701
702	2014-07-23 - 8a4c086 - lavf 55.49.100 - avio.h
703	Add avio_read_to_bprint()
704
705
706	-------- 8< --------- FFmpeg 2.3 was cut here -------- 8< ---------
707
708	2014-07-14 - 62227a7 - lavf 55.47.100 - avformat.h
709	Add av_stream_get_parser()
710
711	2014-07-09 - c67690f / a54f03b - lavu 52.92.100 / 53.18.0 - display.h
712	Add av_display_matrix_flip() to flip the transformation matrix.
713
714	2014-07-09 - 1b58f13 / f6ee61f - lavc 55.69.100 / 55.56.0 - dv_profile.h
715	Add a public API for DV profile handling.
716
717	2014-06-20 - 0dceefc / 9e500ef - lavu 52.90.100 / 53.17.0 - imgutils.h
718	Add av_image_check_sar().
719
720	2014-06-20 - 4a99333 / 874390e - lavc 55.68.100 / 55.55.0 - avcodec.h
721	Add av_packet_rescale_ts() to simplify timestamp conversion.
722
723	2014-06-18 - ac293b6 / 194be1f - lavf 55.44.100 / 55.20.0 - avformat.h
724	The proper way for providing a hint about the desired timebase to the muxers
725	is now setting AVStream.time_base, instead of AVStream.codec.time_base as was
726	done previously. The old method is now deprecated.
727
728	2014-06-11 - 67d29da - lavc 55.66.101 - avcodec.h
729	Increase FF_INPUT_BUFFER_PADDING_SIZE to 32 due to some corner cases needing
730	it
731
732	2014-06-10 - 5482780 - lavf 55.43.100 - avformat.h
733	New field int64_t max_analyze_duration2 instead of deprecated
734	int max_analyze_duration.
735
736	2014-05-30 - 00759d7 - lavu 52.89.100 - opt.h
737	Add av_opt_copy()
738
739	2014-06-01 - 03bb99a / 0957b27 - lavc 55.66.100 / 55.54.0 - avcodec.h
740	Add AVCodecContext.side_data_only_packets to allow encoders to output packets
741	with only side data. This option may become mandatory in the future, so all
742	users are recommended to update their code and enable this option.
743
744	2014-06-01 - 6e8e9f1 / 8c02adc - lavu 52.88.100 / 53.16.0 - frame.h, pixfmt.h
745	Move all color-related enums (AVColorPrimaries, AVColorSpace, AVColorRange,
746	AVColorTransferCharacteristic, and AVChromaLocation) inside lavu.
747	And add AVFrame fields for them.
748
749	2014-05-29 - bdb2e80 / b2d4565 - lavr 1.3.0 - avresample.h
750	Add avresample_max_output_samples
751
752	2014-05-28 - d858ee7 / 6d21259 - lavf 55.42.100 / 55.19.0 - avformat.h
753	Add strict_std_compliance and related AVOptions to support experimental
754	muxing.
755
756	2014-05-26 - 55cc60c - lavu 52.87.100 - threadmessage.h
757	Add thread message queue API.
758
759	2014-05-26 - c37d179 - lavf 55.41.100 - avformat.h
760	Add format_probesize to AVFormatContext.
761
762	2014-05-20 - 7d25af1 / c23c96b - lavf 55.39.100 / 55.18.0 - avformat.h
763	Add av_stream_get_side_data() to access stream-level side data
764	in the same way as av_packet_get_side_data().
765
766	2014-05-20 - 7336e39 - lavu 52.86.100 - fifo.h
767	Add av_fifo_alloc_array() function.
768
769	2014-05-19 - ef1d4ee / bddd8cb - lavu 52.85.100 / 53.15.0 - frame.h, display.h
770	Add AV_FRAME_DATA_DISPLAYMATRIX for exporting frame-level
771	spatial rendering on video frames for proper display.
772
773	2014-05-19 - ef1d4ee / bddd8cb - lavc 55.64.100 / 55.53.0 - avcodec.h
774	Add AV_PKT_DATA_DISPLAYMATRIX for exporting packet-level
775	spatial rendering on video frames for proper display.
776
777	2014-05-19 - 999a99c / a312f71 - lavf 55.38.101 / 55.17.1 - avformat.h
778	Deprecate AVStream.pts and the AVFrac struct, which was its only use case.
779	See use av_stream_get_end_pts()
780
781	2014-05-18 - 68c0518 / fd05602 - lavc 55.63.100 / 55.52.0 - avcodec.h
782	Add avcodec_free_context(). From now on it should be used for freeing
783	AVCodecContext.
784
785	2014-05-17 - 0eec06e / 1bd0bdc - lavu 52.84.100 / 54.5.0 - time.h
786	Add av_gettime_relative() av_gettime_relative_is_monotonic()
787
788	2014-05-15 - eacf7d6 / 0c1959b - lavf 55.38.100 / 55.17.0 - avformat.h
789	Add AVFMT_FLAG_BITEXACT flag. Muxers now use it instead of checking
790	CODEC_FLAG_BITEXACT on the first stream.
791
792	2014-05-15 - 96cb4c8 - lswr 0.19.100 - swresample.h
793	Add swr_close()
794
795	2014-05-11 - 14aef38 / 66e6c8a - lavu 52.83.100 / 53.14.0 - pixfmt.h
796	Add AV_PIX_FMT_VDA for new-style VDA acceleration.
797
798	2014-05-07 - 351f611 - lavu 52.82.100 - fifo.h
799	Add av_fifo_freep() function.
800
801	2014-05-02 - ba52fb11 - lavu 52.81.100 - opt.h
802	Add av_opt_set_dict2() function.
803
804	2014-05-01 - e77b985 / a2941c8 - lavc 55.60.103 / 55.50.3 - avcodec.h
805	Deprecate CODEC_FLAG_MV0. It is replaced by the flag "mv0" in the
806	"mpv_flags" private option of the mpegvideo encoders.
807
808	2014-05-01 - e40ae8c / 6484149 - lavc 55.60.102 / 55.50.2 - avcodec.h
809	Deprecate CODEC_FLAG_GMC. It is replaced by the "gmc" private option of the
810	libxvid encoder.
811
812	2014-05-01 - 1851643 / b2c3171 - lavc 55.60.101 / 55.50.1 - avcodec.h
813	Deprecate CODEC_FLAG_NORMALIZE_AQP. It is replaced by the flag "naq" in the
814	"mpv_flags" private option of the mpegvideo encoders.
815
816	2014-05-01 - cac07d0 / 5fcceda - avcodec.h
817	Deprecate CODEC_FLAG_INPUT_PRESERVED. Its functionality is replaced by passing
818	reference-counted frames to encoders.
819
820	2014-04-30 - 617e866 - lavu 52.81.100 - pixdesc.h
821	Add av_find_best_pix_fmt_of_2(), av_get_pix_fmt_loss()
822	Deprecate avcodec_get_pix_fmt_loss(), avcodec_find_best_pix_fmt_of_2()
823
824	2014-04-29 - 1bf6396 - lavc 55.60.100 - avcodec.h
825	Add AVCodecDescriptor.mime_types field.
826
827	2014-04-29 - b804eb4 - lavu 52.80.100 - hash.h
828	Add av_hash_final_bin(), av_hash_final_hex() and av_hash_final_b64().
829
830	2014-03-07 - 8b2a130 - lavc 55.50.0 / 55.53.100 - dxva2.h
831	Add FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO for old Intel GPUs.
832
833	2014-04-22 - 502512e /dac7e8a - lavu 53.13.0 / 52.78.100 - avutil.h
834	Add av_get_time_base_q().
835
836	2014-04-17 - a8d01a7 / 0983d48 - lavu 53.12.0 / 52.77.100 - crc.h
837	Add AV_CRC_16_ANSI_LE crc variant.
838
839	2014-04-15 - ef818d8 - lavf 55.37.101 - avformat.h
840	Add av_format_inject_global_side_data()
841
842	2014-04-12 - 4f698be - lavu 52.76.100 - log.h
843	Add av_log_get_flags()
844
845	2014-04-11 - 6db42a2b - lavd 55.12.100 - avdevice.h
846	Add avdevice_capabilities_create() function.
847	Add avdevice_capabilities_free() function.
848
849	2014-04-07 - 0a1cc04 / 8b17243 - lavu 52.75.100 / 53.11.0 - pixfmt.h
850	Add AV_PIX_FMT_YVYU422 pixel format.
851
852	2014-04-04 - c1d0536 / 8542f9c - lavu 52.74.100 / 53.10.0 - replaygain.h
853	Full scale for peak values is now 100000 (instead of UINT32_MAX) and values
854	may overflow.
855
856	2014-04-03 - c16e006 / 7763118 - lavu 52.73.100 / 53.9.0 - log.h
857	Add AV_LOG(c) macro to have 256 color debug messages.
858
859	2014-04-03 - eaed4da9 - lavu 52.72.100 - opt.h
860	Add AV_OPT_MULTI_COMPONENT_RANGE define to allow return
861	multi-component option ranges.
862
863	2014-03-29 - cd50a44b - lavu 52.70.100 - mem.h
864	Add av_dynarray_add_nofree() function.
865
866	2014-02-24 - 3e1f241 / d161ae0 - lavu 52.69.100 / 53.8.0 - frame.h
867	Add av_frame_remove_side_data() for removing a single side data
868	instance from a frame.
869
870	2014-03-24 - 83e8978 / 5a7e35d - lavu 52.68.100 / 53.7.0 - frame.h, replaygain.h
871	Add AV_FRAME_DATA_REPLAYGAIN for exporting replaygain tags.
872	Add a new header replaygain.h with the AVReplayGain struct.
873
874	2014-03-24 - 83e8978 / 5a7e35d - lavc 55.54.100 / 55.36.0 - avcodec.h
875	Add AV_PKT_DATA_REPLAYGAIN for exporting replaygain tags.
876
877	2014-03-24 - 595ba3b / 25b3258 - lavf 55.35.100 / 55.13.0 - avformat.h
878	Add AVStream.side_data and AVStream.nb_side_data for exporting stream-global
879	side data (e.g. replaygain tags, video rotation)
880
881	2014-03-24 - bd34e26 / 0e2c3ee - lavc 55.53.100 / 55.35.0 - avcodec.h
882	Give the name AVPacketSideData to the previously anonymous struct used for
883	AVPacket.side_data.
884
885
886	-------- 8< --------- FFmpeg 2.2 was cut here -------- 8< ---------
887
888	2014-03-18 - 37c07d4 - lsws 2.5.102
889	Make gray16 full-scale.
890
891	2014-03-16 - 6b1ca17 / 1481d24 - lavu 52.67.100 / 53.6.0 - pixfmt.h
892	Add RGBA64_LIBAV pixel format and variants for compatibility
893
894	2014-03-11 - 3f3229c - lavf 55.34.101 - avformat.h
895	Set AVFormatContext.start_time_realtime when demuxing.
896
897	2014-03-03 - 06fed440 - lavd 55.11.100 - avdevice.h
898	Add av_input_audio_device_next().
899	Add av_input_video_device_next().
900	Add av_output_audio_device_next().
901	Add av_output_video_device_next().
902
903	2014-02-24 - fff5262 / 1155fd0 - lavu 52.66.100 / 53.5.0 - frame.h
904	Add av_frame_copy() for copying the frame data.
905
906	2014-02-24 - a66be60 - lswr 0.18.100 - swresample.h
907	Add swr_is_initialized() for checking whether a resample context is initialized.
908
909	2014-02-22 - 5367c0b / 7e86c27 - lavr 1.2.0 - avresample.h
910	Add avresample_is_open() for checking whether a resample context is open.
911
912	2014-02-19 - 6a24d77 / c3ecd96 - lavu 52.65.100 / 53.4.0 - opt.h
913	Add AV_OPT_FLAG_EXPORT and AV_OPT_FLAG_READONLY to mark options meant (only)
914	for reading.
915
916	2014-02-19 - f4c8d00 / 6bb8720 - lavu 52.64.101 / 53.3.1 - opt.h
917	Deprecate unused AV_OPT_FLAG_METADATA.
918
919	2014-02-16 - 81c3f81 - lavd 55.10.100 - avdevice.h
920	Add avdevice_list_devices() and avdevice_free_list_devices()
921
922	2014-02-16 - db3c970 - lavf 55.33.100 - avio.h
923	Add avio_find_protocol_name() to find out the name of the protocol that would
924	be selected for a given URL.
925
926	2014-02-15 - a2bc6c1 / c98f316 - lavu 52.64.100 / 53.3.0 - frame.h
927	Add AV_FRAME_DATA_DOWNMIX_INFO value to the AVFrameSideDataType enum and
928	downmix_info.h API, which identify downmix-related metadata.
929
930	2014-02-11 - 1b05ac2 - lavf 55.32.100 - avformat.h
931	Add av_write_uncoded_frame() and av_interleaved_write_uncoded_frame().
932
933	2014-02-04 - 3adb5f8 / d9ae103 - lavf 55.30.100 / 55.11.0 - avformat.h
934	Add AVFormatContext.max_interleave_delta for controlling amount of buffering
935	when interleaving.
936
937	2014-02-02 - 5871ee5 - lavf 55.29.100 - avformat.h
938	Add output_ts_offset muxing option to AVFormatContext.
939
940	2014-01-27 - 102bd64 - lavd 55.7.100 - avdevice.h
941	lavf 55.28.100 - avformat.h
942	Add avdevice_dev_to_app_control_message() function.
943
944	2014-01-27 - 7151411 - lavd 55.6.100 - avdevice.h
945	lavf 55.27.100 - avformat.h
946	Add avdevice_app_to_dev_control_message() function.
947
948	2014-01-24 - 86bee79 - lavf 55.26.100 - avformat.h
949	Add AVFormatContext option metadata_header_padding to allow control over the
950	amount of padding added.
951
952	2014-01-20 - eef74b2 / 93c553c - lavc 55.48.102 / 55.32.1 - avcodec.h
953	Edges are not required anymore on video buffers allocated by get_buffer2()
954	(i.e. as if the CODEC_FLAG_EMU_EDGE flag was always on). Deprecate
955	CODEC_FLAG_EMU_EDGE and avcodec_get_edge_width().
956
957	2014-01-19 - 1a193c4 - lavf 55.25.100 - avformat.h
958	Add avformat_get_mov_video_tags() and avformat_get_mov_audio_tags().
959
960	2014-01-19 - 3532dd5 - lavu 52.63.100 - rational.h
961	Add av_make_q() function.
962
963	2014-01-05 - 4cf4da9 / 5b4797a - lavu 52.62.100 / 53.2.0 - frame.h
964	Add AV_FRAME_DATA_MATRIXENCODING value to the AVFrameSideDataType enum, which
965	identifies AVMatrixEncoding data.
966
967	2014-01-05 - 751385f / 5c437fb - lavu 52.61.100 / 53.1.0 - channel_layout.h
968	Add values for various Dolby flags to the AVMatrixEncoding enum.
969
970	2014-01-04 - b317f94 - lavu 52.60.100 - mathematics.h
971	Add av_add_stable() function.
972
973	2013-12-22 - 911676c - lavu 52.59.100 - avstring.h
974	Add av_strnlen() function.
975
976	2013-12-09 - 64f73ac - lavu 52.57.100 - opencl.h
977	Add av_opencl_benchmark() function.
978
979	2013-11-30 - 82b2e9c - lavu 52.56.100 - ffversion.h
980	Moves version.h to libavutil/ffversion.h.
981	Install ffversion.h and make it public.
982
983	2013-12-11 - 29c83d2 / b9fb59d,409a143 / 9431356,44967ab / d7b3ee9 - lavc 55.45.101 / 55.28.1 - avcodec.h
984	av_frame_alloc(), av_frame_unref() and av_frame_free() now can and should be
985	used instead of avcodec_alloc_frame(), avcodec_get_frame_defaults() and
986	avcodec_free_frame() respectively. The latter three functions are deprecated.
987
988	2013-12-09 - 7a60348 / 7e244c6- - lavu 52.58.100 / 52.20.0 - frame.h
989	Add AV_FRAME_DATA_STEREO3D value to the AVFrameSideDataType enum and
990	stereo3d.h API, that identify codec-independent stereo3d information.
991
992	2013-11-26 - 625b290 / 1eaac1d- - lavu 52.55.100 / 52.19.0 - frame.h
993	Add AV_FRAME_DATA_A53_CC value to the AVFrameSideDataType enum, which
994	identifies ATSC A53 Part 4 Closed Captions data.
995
996	2013-11-22 - 6859065 - lavu 52.54.100 - avstring.h
997	Add av_utf8_decode() function.
998
999	2013-11-22 - fb7d70c - lavc 55.44.100 - avcodec.h
1000	Add HEVC profiles
1001
1002	2013-11-20 - c28b61c - lavc 55.44.100 - avcodec.h
1003	Add av_packet_{un,}pack_dictionary()
1004	Add AV_PKT_METADATA_UPDATE side data type, used to transmit key/value
1005	strings between a stream and the application.
1006
1007	2013-11-14 - 7c888ae / cce3e0a - lavu 52.53.100 / 52.18.0 - mem.h
1008	Move av_fast_malloc() and av_fast_realloc() for libavcodec to libavutil.
1009
1010	2013-11-14 - b71e4d8 / 8941971 - lavc 55.43.100 / 55.27.0 - avcodec.h
1011	Deprecate AVCodecContext.error_rate, it is replaced by the 'error_rate'
1012	private option of the mpegvideo encoder family.
1013
1014	2013-11-14 - 31c09b7 / 728c465 - lavc 55.42.100 / 55.26.0 - vdpau.h
1015	Add av_vdpau_get_profile().
1016	Add av_vdpau_alloc_context(). This function must from now on be
1017	used for allocating AVVDPAUContext.
1018
1019	2013-11-04 - be41f21 / cd8f772 - lavc 55.41.100 / 55.25.0 - avcodec.h
1020	lavu 52.51.100 - frame.h
1021	Add ITU-R BT.2020 and other not yet included values to color primaries,
1022	transfer characteristics and colorspaces.
1023
1024	2013-11-04 - 85cabf1 - lavu 52.50.100 - avutil.h
1025	Add av_fopen_utf8()
1026
1027	2013-10-31 - 78265fc / 28096e0 - lavu 52.49.100 / 52.17.0 - frame.h
1028	Add AVFrame.flags and AV_FRAME_FLAG_CORRUPT.
1029
1030
1031	-------- 8< --------- FFmpeg 2.1 was cut here -------- 8< ---------
1032
1033	2013-10-27 - dbe6f9f - lavc 55.39.100 - avcodec.h
1034	Add CODEC_CAP_DELAY support to avcodec_decode_subtitle2.
1035
1036	2013-10-27 - d61617a - lavu 52.48.100 - parseutils.h
1037	Add av_get_known_color_name().
1038
1039	2013-10-17 - 8696e51 - lavu 52.47.100 - opt.h
1040	Add AV_OPT_TYPE_CHANNEL_LAYOUT and channel layout option handlers
1041	av_opt_get_channel_layout() and av_opt_set_channel_layout().
1042
1043	2013-10-06 - ccf96f8 -libswscale 2.5.101 - options.c
1044	Change default scaler to bicubic
1045
1046	2013-10-03 - e57dba0 - lavc 55.34.100 - avcodec.h
1047	Add av_codec_get_max_lowres()
1048
1049	2013-10-02 - 5082fcc - lavf 55.19.100 - avformat.h
1050	Add audio/video/subtitle AVCodec fields to AVFormatContext to force specific
1051	decoders
1052
1053	2013-09-28 - 7381d31 / 0767bfd - lavfi 3.88.100 / 3.11.0 - avfilter.h
1054	Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
1055	implementations.
1056
1057	2013-09-21 - 85f8a3c / e208e6d - lavu 52.46.100 / 52.16.0 - pixfmt.h
1058	Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
1059	AV_PIX_FMT_NV20.
1060
1061	2013-09-16 - c74c3fb / 3feb3d6 - lavu 52.44.100 / 52.15.0 - mem.h
1062	Add av_reallocp.
1063
1064	2013-09-04 - 3e1f507 - lavc 55.31.101 - avcodec.h
1065	avcodec_close() argument can be NULL.
1066
1067	2013-09-04 - 36cd017a - lavf 55.16.101 - avformat.h
1068	avformat_close_input() argument can be NULL and point on NULL.
1069
1070	2013-08-29 - e31db62 - lavf 55.15.100 - avformat.h
1071	Add av_format_get_probe_score().
1072
1073	2013-08-15 - 1e0e193 - lsws 2.5.100 -
1074	Add a sws_dither AVOption, allowing to set the dither algorithm used
1075
1076	2013-08-11 - d404fe35 - lavc 55.27.100 - vdpau.h
1077	Add a render2 alternative to the render callback function.
1078
1079	2013-08-11 - af05edc - lavc 55.26.100 - vdpau.h
1080	Add allocation function for AVVDPAUContext, allowing
1081	to extend it in the future without breaking ABI/API.
1082
1083	2013-08-10 - 67a580f / 5a9a9d4 - lavc 55.25.100 / 55.16.0 - avcodec.h
1084	Extend AVPacket API with av_packet_unref, av_packet_ref,
1085	av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
1086
1087	2013-08-05 - 9547e3e / f824535 - lavc 55.22.100 / 55.13.0 - avcodec.h
1088	Deprecate the bitstream-related members from struct AVVDPAUContext.
1089	The bitstream buffers no longer need to be explicitly freed.
1090
1091	2013-08-05 - 3b805dc / 549294f - lavc 55.21.100 / 55.12.0 - avcodec.h
1092	Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
1093	and select the AV_PIX_FMT_VDPAU format with get_format() instead.
1094
1095	2013-08-05 - 4ee0984 / a0ad5d0 - lavu 52.41.100 / 52.14.0 - pixfmt.h
1096	Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
1097
1098	2013-08-02 - 82fdfe8 / a8b1927 - lavc 55.20.100 / 55.11.0 - avcodec.h
1099	Add output_picture_number to AVCodecParserContext.
1100
1101	2013-07-23 - abc8110 - lavc 55.19.100 - avcodec.h
1102	Add avcodec_chroma_pos_to_enum()
1103	Add avcodec_enum_to_chroma_pos()
1104
1105
1106	-------- 8< --------- FFmpeg 2.0 was cut here -------- 8< ---------
1107
1108	2013-07-03 - 838bd73 - lavfi 3.78.100 - avfilter.h
1109	Deprecate avfilter_graph_parse() in favor of the equivalent
1110	avfilter_graph_parse_ptr().
1111
1112	2013-06-24 - af5f9c0 / 95d5246 - lavc 55.17.100 / 55.10.0 - avcodec.h
1113	Add MPEG-2 AAC profiles
1114
1115	2013-06-25 - af5f9c0 / 95d5246 - lavf 55.10.100 - avformat.h
1116	Add AV_DISPOSITION_* flags to indicate text track kind.
1117
1118	2013-06-15 - 99b8cd0 - lavu 52.36.100
1119	Add AVRIPEMD:
1120	av_ripemd_alloc()
1121	av_ripemd_init()
1122	av_ripemd_update()
1123	av_ripemd_final()
1124
1125	2013-06-10 - 82ef670 - lavu 52.35.101 - hmac.h
1126	Add AV_HMAC_SHA224, AV_HMAC_SHA256, AV_HMAC_SHA384, AV_HMAC_SHA512
1127
1128	2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h
1129	Add av_realloc_array and av_reallocp_array
1130
1131	2013-05-30 - 682b227 - lavu 52.35.100
1132	Add AVSHA512:
1133	av_sha512_alloc()
1134	av_sha512_init()
1135	av_sha512_update()
1136	av_sha512_final()
1137
1138	2013-05-24 - 8d4e969 / 129bb23 - lavfi 3.10.0 / 3.70.100 - avfilter.h
1139	Add support for slice multithreading to lavfi. Filters supporting threading
1140	are marked with AVFILTER_FLAG_SLICE_THREADS.
1141	New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
1142	AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
1143	used to configure multithreading.
1144
1145	2013-05-24 - fe40a9f / 2a6eaea - lavu 52.12.0 / 52.34.100 - cpu.h
1146	Add av_cpu_count() function for getting the number of logical CPUs.
1147
1148	2013-05-24 - 0c25c39 / b493847 - lavc 55.7.0 / 55.12.100 - avcodec.h
1149	Add picture_structure to AVCodecParserContext.
1150
1151	2013-05-17 - 3a751ea - lavu 52.33.100 - opt.h
1152	Add AV_OPT_TYPE_COLOR value to AVOptionType enum.
1153
1154	2013-05-13 - e398416 - lavu 52.31.100 - mem.h
1155	Add av_dynarray2_add().
1156
1157	2013-05-12 - 1776177 - lavfi 3.65.100
1158	Add AVFILTER_FLAG_SUPPORT_TIMELINE* filter flags.
1159
1160	2013-04-19 - 380cfce - lavc 55.4.100
1161	Add AV_CODEC_PROP_TEXT_SUB property for text based subtitles codec.
1162
1163	2013-04-18 - 7c1a002 - lavf 55.3.100
1164	The matroska demuxer can now output proper verbatim ASS packets. It will
1165	become the default starting lavf 56.0.100.
1166
1167	2013-04-10 - af0d270 - lavu 25.26.100 - avutil.h,opt.h
1168	Add av_int_list_length()
1169	and av_opt_set_int_list().
1170
1171	2013-03-30 - 5c73645 - lavu 52.24.100 - samplefmt.h
1172	Add av_samples_alloc_array_and_samples().
1173
1174	2013-03-29 - ef7b6b4 - lavf 55.1.100 - avformat.h
1175	Add av_guess_frame_rate()
1176
1177	2013-03-20 - 8d928a9 - lavu 52.22.100 - opt.h
1178	Add AV_OPT_TYPE_DURATION value to AVOptionType enum.
1179
1180	2013-03-17 - 7aa9af5 - lavu 52.20.100 - opt.h
1181	Add AV_OPT_TYPE_VIDEO_RATE value to AVOptionType enum.
1182
1183
1184	-------- 8< --------- FFmpeg 1.2 was cut here -------- 8< ---------
1185
1186	2013-03-07 - 9767ec6 - lavu 52.18.100 - avstring.h,bprint.h
1187	Add av_escape() and av_bprint_escape() API.
1188
1189	2013-02-24 - b59cd08 - lavfi 3.41.100 - buffersink.h
1190	Add sample_rates field to AVABufferSinkParams.
1191
1192	2013-01-17 - a1a707f - lavf 54.61.100
1193	Add av_codec_get_tag2().
1194
1195	2013-01-01 - 2eb2e17 - lavfi 3.34.100
1196	Add avfilter_get_audio_buffer_ref_from_arrays_channels.
1197
1198
1199	-------- 8< --------- FFmpeg 1.1 was cut here -------- 8< ---------
1200
1201	2012-12-20 - 34de47aa - lavfi 3.29.100 - avfilter.h
1202	Add AVFilterLink.channels, avfilter_link_get_channels()
1203	and avfilter_ref_get_channels().
1204
1205	2012-12-15 - 96d815fc - lavc 54.80.100 - avcodec.h
1206	Add pkt_size field to AVFrame.
1207
1208	2012-11-25 - c70ec631 - lavu 52.9.100 - opt.h
1209	Add the following convenience functions to opt.h:
1210	av_opt_get_image_size
1211	av_opt_get_pixel_fmt
1212	av_opt_get_sample_fmt
1213	av_opt_set_image_size
1214	av_opt_set_pixel_fmt
1215	av_opt_set_sample_fmt
1216
1217	2012-11-17 - 4cd74c81 - lavu 52.8.100 - bprint.h
1218	Add av_bprint_strftime().
1219
1220	2012-11-15 - 92648107 - lavu 52.7.100 - opt.h
1221	Add av_opt_get_key_value().
1222
1223	2012-11-13 - 79456652 - lavfi 3.23.100 - avfilter.h
1224	Add channels field to AVFilterBufferRefAudioProps.
1225
1226	2012-11-03 - 481fdeee - lavu 52.3.100 - opt.h
1227	Add AV_OPT_TYPE_SAMPLE_FMT value to AVOptionType enum.
1228
1229	2012-10-21 - 6fb2fd8 - lavc 54.68.100 - avcodec.h
1230	lavfi 3.20.100 - avfilter.h
1231	Add AV_PKT_DATA_STRINGS_METADATA side data type, used to transmit key/value
1232	strings between AVPacket and AVFrame, and add metadata field to
1233	AVCodecContext (which shall not be accessed by users; see AVFrame metadata
1234	instead).
1235
1236	2012-09-27 - a70b493 - lavd 54.3.100 - version.h
1237	Add LIBAVDEVICE_IDENT symbol.
1238
1239	2012-09-27 - a70b493 - lavfi 3.18.100 - version.h
1240	Add LIBAVFILTER_IDENT symbol.
1241
1242	2012-09-27 - a70b493 - libswr 0.16.100 - version.h
1243	Add LIBSWRESAMPLE_VERSION, LIBSWRESAMPLE_BUILD
1244	and LIBSWRESAMPLE_IDENT symbols.
1245
1246
1247	-------- 8< --------- FFmpeg 1.0 was cut here -------- 8< ---------
1248
1249	2012-09-06 - 29e972f - lavu 51.72.100 - parseutils.h
1250	Add av_small_strptime() time parsing function.
1251
1252	Can be used as a stripped-down replacement for strptime(), on
1253	systems which do not support it.
1254
1255	2012-08-25 - 2626cc4 - lavf 54.28.100
1256	Matroska demuxer now identifies SRT subtitles as AV_CODEC_ID_SUBRIP instead
1257	of AV_CODEC_ID_TEXT.
1258
1259	2012-08-13 - 5c0d8bc - lavfi 3.8.100 - avfilter.h
1260	Add avfilter_get_class() function, and priv_class field to AVFilter
1261	struct.
1262
1263	2012-08-12 - a25346e - lavu 51.69.100 - opt.h
1264	Add AV_OPT_FLAG_FILTERING_PARAM symbol in opt.h.
1265
1266	2012-07-31 - 23fc4dd - lavc 54.46.100
1267	Add channels field to AVFrame.
1268
1269	2012-07-30 - f893904 - lavu 51.66.100
1270	Add av_get_channel_description()
1271	and av_get_standard_channel_layout() functions.
1272
1273	2012-07-21 - 016a472 - lavc 54.43.100
1274	Add decode_error_flags field to AVFrame.
1275
1276	2012-07-20 - b062936 - lavf 54.18.100
1277	Add avformat_match_stream_specifier() function.
1278
1279	2012-07-14 - f49ec1b - lavc 54.38.100 - avcodec.h
1280	Add metadata to AVFrame, and the accessor functions
1281	av_frame_get_metadata() and av_frame_set_metadata().
1282
1283	2012-07-10 - 0e003d8 - lavc 54.33.100
1284	Add av_fast_padded_mallocz().
1285
1286	2012-07-10 - 21d5609 - lavfi 3.2.0 - avfilter.h
1287	Add init_opaque() callback to AVFilter struct.
1288
1289	2012-06-26 - e6674e4 - lavu 51.63.100 - imgutils.h
1290	Add functions to libavutil/imgutils.h:
1291	av_image_get_buffer_size()
1292	av_image_fill_arrays()
1293	av_image_copy_to_buffer()
1294
1295	2012-06-24 - c41899a - lavu 51.62.100 - version.h
1296	version moved from avutil.h to version.h
1297
1298	2012-04-11 - 359abb1 - lavu 51.58.100 - error.h
1299	Add av_make_error_string() and av_err2str() utilities to
1300	libavutil/error.h.
1301
1302	2012-06-05 - 62b39d4 - lavc 54.24.100
1303	Add pkt_duration field to AVFrame.
1304
1305	2012-05-24 - f2ee065 - lavu 51.54.100
1306	Move AVPALETTE_SIZE and AVPALETTE_COUNT macros from
1307	libavcodec/avcodec.h to libavutil/pixfmt.h.
1308
1309	2012-05-14 - 94a9ac1 - lavf 54.5.100
1310	Add av_guess_sample_aspect_ratio() function.
1311
1312	2012-04-20 - 65fa7bc - lavfi 2.70.100
1313	Add avfilter_unref_bufferp() to avfilter.h.
1314
1315	2012-04-13 - 162e400 - lavfi 2.68.100
1316	Install libavfilter/asrc_abuffer.h public header.
1317
1318	2012-03-26 - a67d9cf - lavfi 2.66.100
1319	Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
1320
1321	2013-05-15 - ff46809 / e6c4ac7 - lavu 52.32.100 / 52.11.0 - pixdesc.h
1322	Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
1323
1324	2013-04-03 - 6fc58a8 / 507b1e4 - lavc 55.7.100 / 55.4.0 - avcodec.h
1325	Add field_order to AVCodecParserContext.
1326
1327	2013-04-19 - f4b05cd / 5e83d9a - lavc 55.5.100 / 55.2.0 - avcodec.h
1328	Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
1329
1330	2013-04-11 - lavfi 3.53.100 / 3.8.0
1331	231fd44 / 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
1332	avfilterhraph.h, user applications should include just avfilter.h
1333	86070b8 / bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
1334	avfilter_graph_add_filter().
1335	4fde705 / 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
1336	filter.
1337	710b0aa / 48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
1338	46de9ba / 1ba95a9 - Add avfilter_init_dict().
1339	16fc24b / 7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
1340	f4db6bf / 7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
1341	835cc0f / fa2a34c - Add avfilter_next(), deprecate av_filter_next().
1342	Deprecate avfilter_uninit().
1343
1344	2013-04-09 - lavfi 3.51.100 / 3.7.0 - avfilter.h
1345	0594ef0 / b439c99 - Add AVFilter.priv_class for exporting filter options through the
1346	AVOptions API in the similar way private options work in lavc and lavf.
1347	44d4488 / 8114c10 - Add avfilter_get_class().
1348	Switch all filters to use AVOptions.
1349
1350	2013-03-19 - 17ebef2 / 2c328a9 - lavu 52.20.100 / 52.9.0 - pixdesc.h
1351	Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
1352
1353	2013-03-16 - ecade98 / 42c7c61 - lavfi 3.47.100 / 3.6.0
1354	Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
1355
1356	2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.100 / 55.0.0, lavf 55.0.100 / 55.0.0,
1357	lavd 54.4.100 / 54.0.0, lavfi 3.5.0
1358	36099df / 8e401db, 532f31a / 1cec062 - add a new API for reference counted buffers and buffer
1359	pools (new header libavutil/buffer.h).
1360	2653e12 / 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
1361	Add av_packet_from_data() function for constructing packets from
1362	av_malloc()ed data.
1363	c4e8821 / 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
1364	AVFrame.buf/extended_buf to allow reference counting for the AVFrame
1365	data. Add new API for working with reference-counted AVFrames.
1366	80e9e63 / 759001c - add the refcounted_frames field to AVCodecContext to make audio and
1367	video decoders return reference-counted frames. Add get_buffer2()
1368	callback to AVCodecContext which allocates reference-counted frames.
1369	Add avcodec_default_get_buffer2() as the default get_buffer2()
1370	implementation.
1371	Deprecate AVCodecContext.get_buffer() / release_buffer() /
1372	reget_buffer(), avcodec_default_get_buffer(),
1373	avcodec_default_reget_buffer(), avcodec_default_release_buffer().
1374	Remove avcodec_default_free_buffers(), which should not have ever
1375	been called from outside of lavc.
1376	Deprecate the following AVFrame fields:
1377	* base -- is now stored in AVBufferRef
1378	* reference, type, buffer_hints -- are unnecessary in the new API
1379	* hwaccel_picture_private, owner, thread_opaque -- should not
1380	have been accessed from outside of lavc
1381	* qscale_table, qstride, qscale_type, mbskip_table, motion_val,
1382	mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
1383	which are not exported anymore.
1384	a05a44e / 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
1385	av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
1386	Add av_buffersink_get_frame() and av_buffersink_get_samples(),
1387	deprecate av_buffersink_read() and av_buffersink_read_samples().
1388	Deprecate AVFilterBufferRef and all functions for working with it.
1389
1390	2013-03-17 - 6c17ff8 / 12c5c1d - lavu 52.19.100 / 52.8.0 - avstring.h
1391	Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
1392
1393	2013-02-23 - 71cf094 / 9f12235 - lavfi 3.40.100 / 3.4.0 - avfiltergraph.h
1394	Add resample_lavr_opts to AVFilterGraph for setting libavresample options
1395	for auto-inserted resample filters.
1396
1397	2013-01-25 - e7e14bc / 38c1466 - lavu 52.17.100 / 52.7.0 - dict.h
1398	Add av_dict_parse_string() to set multiple key/value pairs at once from a
1399	string.
1400
1401	2013-01-25 - 25be630 / b85a5e8 - lavu 52.16.100 / 52.6.0 - avstring.h
1402	Add av_strnstr()
1403
1404	2013-01-15 - e7e0186 / 8ee288d - lavu 52.15.100 / 52.5.0 - hmac.h
1405	Add AVHMAC.
1406
1407	2013-01-13 - 8ee7b38 / 44e065d - lavc 54.87.100 / 54.36.0 - vdpau.h
1408	Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
1409
1410	2013-01-12 - dae382b / 169fb94 - lavu 52.14.100 / 52.4.0 - pixdesc.h
1411	Add AV_PIX_FMT_VDPAU flag.
1412
1413	2013-01-07 - 249fca3 / 074a00d - lavr 1.1.0
1414	Add avresample_set_channel_mapping() for input channel reordering,
1415	duplication, and silencing.
1416
1417	2012-12-29 - lavu 52.13.100 / 52.3.0 - avstring.h
1418	2ce43b3 / d8fd06c - Add av_basename() and av_dirname().
1419	e13d5e9 / c1a02e8 - Add av_pix_fmt_get_chroma_sub_sample and deprecate
1420	avcodec_get_chroma_sub_sample.
1421
1422	2012-11-11 - 03b0787 / 5980f5d - lavu 52.6.100 / 52.2.0 - audioconvert.h
1423	Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
1424
1425	2012-10-21 - e3a91c5 / a893655 - lavu 51.77.100 / 51.45.0 - error.h
1426	Add AVERROR_EXPERIMENTAL
1427
1428	2012-10-12 - a33ed6b / d2fcb35 - lavu 51.76.100 / 51.44.0 - pixdesc.h
1429	Add functions for accessing pixel format descriptors.
1430	Accessing the av_pix_fmt_descriptors array directly is now
1431	deprecated.
1432
1433	2012-10-11 - f391e40 / 9a92aea - lavu 51.75.100 / 51.43.0 - aes.h, md5.h, sha.h, tree.h
1434	Add functions for allocating the opaque contexts for the algorithms,
1435
1436	2012-10-10 - de31814 / b522000 - lavf 54.32.100 / 54.18.0 - avio.h
1437	Add avio_closep to complement avio_close.
1438
1439	2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h
1440	Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
1441	To provide backwards compatibility, PixelFormat is now #defined as
1442	AVPixelFormat.
1443	Note that this can break user code that includes pixfmt.h and uses the
1444	'PixelFormat' identifier. Such code should either #undef PixelFormat
1445	or stop using the PixelFormat name.
1446
1447	2012-10-05 - 55c49af / e7ba5b1 - lavr 1.0.0 - avresample.h
1448	Data planes parameters to avresample_convert() and
1449	avresample_read() are now uint8_t** instead of void**.
1450	Libavresample is now stable.
1451
1452	2012-09-26 - 3ba0dab7 / 1384df64 - lavf 54.29.101 / 56.06.3 - avformat.h
1453	Add AVFormatContext.avoid_negative_ts.
1454
1455	2012-09-24 - 46a3595 / a42aada - lavc 54.59.100 / 54.28.0 - avcodec.h
1456	Add avcodec_free_frame(). This function must now
1457	be used for freeing an AVFrame.
1458
1459	2012-09-12 - e3e09f2 / 8919fee - lavu 51.73.100 / 51.41.0 - audioconvert.h
1460	Added AV_CH_LOW_FREQUENCY_2 channel mask value.
1461
1462	2012-09-04 - b21b5b0 / 686a329 - lavu 51.71.100 / 51.40.0 - opt.h
1463	Reordered the fields in default_val in AVOption, changed which
1464	default_val field is used for which AVOptionType.
1465
1466	2012-08-30 - 98298eb / a231832 - lavc 54.54.101 / 54.26.1 - avcodec.h
1467	Add codec descriptor properties AV_CODEC_PROP_LOSSY and
1468	AV_CODEC_PROP_LOSSLESS.
1469
1470	2012-08-18 - lavc 54.26 - avcodec.h
1471	Add codec descriptors for accessing codec properties without having
1472	to refer to a specific decoder or encoder.
1473
1474	f5f3684 / c223d79 - Add an AVCodecDescriptor struct and functions
1475	avcodec_descriptor_get() and avcodec_descriptor_next().
1476	f5f3684 / 51efed1 - Add AVCodecDescriptor.props and AV_CODEC_PROP_INTRA_ONLY.
1477	6c180b3 / 91e59fe - Add avcodec_descriptor_get_by_name().
1478
1479	2012-08-08 - f5f3684 / 987170c - lavu 51.68.100 / 51.38.0 - dict.h
1480	Add av_dict_count().
1481
1482	2012-08-07 - 7a72695 / 104e10f - lavc 54.51.100 / 54.25.0 - avcodec.h
1483	Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
1484	To provide backwards compatibility, CodecID is now #defined as AVCodecID.
1485	Note that this can break user code that includes avcodec.h and uses the
1486	'CodecID' identifier. Such code should either #undef CodecID or stop using the
1487	CodecID name.
1488
1489	2012-08-03 - e776ee8 / 239fdf1 - lavu 51.66.101 / 51.37.1 - cpu.h
1490	lsws 2.1.1 - swscale.h
1491	Rename AV_CPU_FLAG_MMX2 ---> AV_CPU_FLAG_MMXEXT.
1492	Rename SWS_CPU_CAPS_MMX2 ---> SWS_CPU_CAPS_MMXEXT.
1493
1494	2012-07-29 - 7c26761 / 681ed00 - lavf 54.22.100 / 54.13.0 - avformat.h
1495	Add AVFMT_FLAG_NOBUFFER for low latency use cases.
1496
1497	2012-07-10 - fbe0245 / f3e5e6f - lavu 51.65.100 / 51.37.0
1498	Add av_malloc_array() and av_mallocz_array()
1499
1500	2012-06-22 - e847f41 / d3d3a32 - lavu 51.61.100 / 51.34.0
1501	Add av_usleep()
1502
1503	2012-06-20 - 4da42eb / ae0a301 - lavu 51.60.100 / 51.33.0
1504	Move av_gettime() to libavutil, add libavutil/time.h
1505
1506	2012-06-09 - 82edf67 / 3971be0 - lavr 0.0.3
1507	Add a parameter to avresample_build_matrix() for Dolby/DPLII downmixing.
1508
1509	2012-06-12 - c7b9eab / 9baeff9 - lavfi 2.79.100 / 2.23.0 - avfilter.h
1510	Add AVFilterContext.nb_inputs/outputs. Deprecate
1511	AVFilterContext.input/output_count.
1512
1513	2012-06-12 - c7b9eab / 84b9fbe - lavfi 2.79.100 / 2.22.0 - avfilter.h
1514	Add avfilter_pad_get_type() and avfilter_pad_get_name(). Those
1515	should now be used instead of accessing AVFilterPad members
1516	directly.
1517
1518	2012-06-12 - 3630a07 / b0f0dfc - lavu 51.57.100 / 51.32.0 - audioconvert.h
1519	Add av_get_channel_layout_channel_index(), av_get_channel_name()
1520	and av_channel_layout_extract_channel().
1521
1522	2012-05-25 - 53ce990 / 154486f - lavu 51.55.100 / 51.31.0 - opt.h
1523	Add av_opt_set_bin()
1524
1525	2012-05-15 - lavfi 2.74.100 / 2.17.0
1526	Add support for audio filters
1527	61930bd / ac71230, 1cbf7fb / a2cd9be - add video/audio buffer sink in a new installed
1528	header buffersink.h
1529	1cbf7fb / 720c6b7 - add av_buffersrc_write_frame(), deprecate
1530	av_vsrc_buffer_add_frame()
1531	61930bd / ab16504 - add avfilter_copy_buf_props()
1532	61930bd / 9453c9e - add extended_data to AVFilterBuffer
1533	61930bd / 1b8c927 - add avfilter_get_audio_buffer_ref_from_arrays()
1534
1535	2012-05-09 - lavu 51.53.100 / 51.30.0 - samplefmt.h
1536	61930bd / 142e740 - add av_samples_copy()
1537	61930bd / 6d7f617 - add av_samples_set_silence()
1538
1539	2012-05-09 - 61930bd / a5117a2 - lavc 54.21.101 / 54.13.1
1540	For audio formats with fixed frame size, the last frame
1541	no longer needs to be padded with silence, libavcodec
1542	will handle this internally (effectively all encoders
1543	behave as if they had CODEC_CAP_SMALL_LAST_FRAME set).
1544
1545	2012-05-07 - 653d117 / 828bd08 - lavc 54.20.100 / 54.13.0 - avcodec.h
1546	Add sample_rate and channel_layout fields to AVFrame.
1547
1548	2012-05-01 - 2330eb1 / 4010d72 - lavr 0.0.1
1549	Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
1550
1551	2012-04-25 - e890b68 / 3527a73 - lavu 51.48.100 / 51.29.0 - cpu.h
1552	Add av_parse_cpu_flags()
1553
1554	2012-04-24 - 3ead79e / c8af852 - lavr 0.0.0
1555	Add libavresample audio conversion library
1556
1557	2012-04-20 - 3194ab7 / 0c0d1bc - lavu 51.47.100 / 51.28.0 - audio_fifo.h
1558	Add audio FIFO functions:
1559	av_audio_fifo_free()
1560	av_audio_fifo_alloc()
1561	av_audio_fifo_realloc()
1562	av_audio_fifo_write()
1563	av_audio_fifo_read()
1564	av_audio_fifo_drain()
1565	av_audio_fifo_reset()
1566	av_audio_fifo_size()
1567	av_audio_fifo_space()
1568
1569	2012-04-14 - lavfi 2.70.100 / 2.16.0 - avfiltergraph.h
1570	7432bcf / d7bcc71 Add avfilter_graph_parse2().
1571
1572	2012-04-08 - 6bfb304 / 4d693b0 - lavu 51.46.100 / 51.27.0 - samplefmt.h
1573	Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
1574
1575	2012-03-21 - b75c67d - lavu 51.43.100
1576	Add bprint.h for bprint API.
1577
1578	2012-02-21 - 9cbf17e - lavc 54.4.100
1579	Add av_get_pcm_codec() function.
1580
1581	2012-02-16 - 560b224 - libswr 0.7.100
1582	Add swr_set_matrix() function.
1583
1584	2012-02-09 - c28e7af - lavu 51.39.100
1585	Add a new installed header libavutil/timestamp.h with timestamp
1586	utilities.
1587
1588	2012-02-06 - 70ffda3 - lavu 51.38.100
1589	Add av_parse_ratio() function to parseutils.h.
1590
1591	2012-02-06 - 70ffda3 - lavu 51.38.100
1592	Add AV_LOG_MAX_OFFSET macro to log.h.
1593
1594	2012-02-02 - 0eaa123 - lavu 51.37.100
1595	Add public timecode helpers.
1596
1597	2012-01-24 - 0c3577b - lavfi 2.60.100
1598	Add avfilter_graph_dump.
1599
1600	2012-03-20 - 0ebd836 / 3c90cc2 - lavfo 54.2.0
1601	Deprecate av_read_packet(), use av_read_frame() with
1602	AVFMT_FLAG_NOPARSE | AVFMT_FLAG_NOFILLIN in AVFormatContext.flags
1603
1604	2012-03-05 - lavc 54.10.100 / 54.8.0
1605	f095391 / 6699d07 Add av_get_exact_bits_per_sample()
1606	f095391 / 9524cf7 Add av_get_audio_frame_duration()
1607
1608	2012-03-04 - 2af8f2c / 44fe77b - lavc 54.8.100 / 54.7.0 - avcodec.h
1609	Add av_codec_is_encoder/decoder().
1610
1611	2012-03-01 - 1eb7f39 / 442c132 - lavc 54.5.100 / 54.3.0 - avcodec.h
1612	Add av_packet_shrink_side_data.
1613
1614	2012-02-29 - 79ae084 / dd2a4bc - lavf 54.2.100 / 54.2.0 - avformat.h
1615	Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
1616	used for dealing with attached pictures/cover art.
1617
1618	2012-02-25 - 305e4b3 / c9bca80 - lavu 51.41.100 / 51.24.0 - error.h
1619	Add AVERROR_UNKNOWN
1620	NOTE: this was backported to 0.8
1621
1622	2012-02-20 - eadd426 / e9cda85 - lavc 54.2.100 / 54.2.0
1623	Add duration field to AVCodecParserContext
1624
1625	2012-02-20 - eadd426 / 0b42a93 - lavu 51.40.100 / 51.23.1 - mathematics.h
1626	Add av_rescale_q_rnd()
1627
1628	2012-02-08 - f2b20b7 / 38d5533 - lavu 51.38.101 / 51.22.1 - pixdesc.h
1629	Add PIX_FMT_PSEUDOPAL flag.
1630
1631	2012-02-08 - f2b20b7 / 52f82a1 - lavc 54.2.100 / 54.1.0
1632	Add avcodec_encode_video2() and deprecate avcodec_encode_video().
1633
1634	2012-02-01 - 4c677df / 316fc74 - lavc 54.1.0
1635	Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
1636	memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
1637	zero-padded bytes at the end.
1638
1639	2012-01-31 - a369a6b / dd6d3b0 - lavf 54.1.0
1640	Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
1641	NOTE: this was backported to 0.8
1642
1643	2012-01-31 - a369a6b / af08d9a - lavc 54.1.0
1644	Add avcodec_is_open() function.
1645	NOTE: this was backported to 0.8
1646
1647	2012-01-30 - 151ecc2 / 8b93312 - lavu 51.36.100 / 51.22.0 - intfloat.h
1648	Add a new installed header libavutil/intfloat.h with int/float punning
1649	functions.
1650	NOTE: this was backported to 0.8
1651
1652	2012-01-25 - lavf 53.31.100 / 53.22.0
1653	3c5fe5b / f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
1654	buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
1655	muxers supporting it (av_write_frame makes sure it is called
1656	only for muxers with this flag).
1657
1658	2012-01-15 - lavc 53.56.105 / 53.34.0
1659	New audio encoding API:
1660	67f5650 / b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
1661	encoders.
1662	67f5650 / 5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
1663	67f5650 / b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
1664	Add AVCodec.encode2().
1665
1666	2012-01-12 - b18e17e / 3167dc9 - lavfi 2.59.100 / 2.15.0
1667	Add a new installed header -- libavfilter/version.h -- with version macros.
1668
1669
1670	-------- 8< --------- FFmpeg 0.9 was cut here -------- 8< ---------
1671
1672	2011-12-08 - a502939 - lavfi 2.52.0
1673	Add av_buffersink_poll_frame() to buffersink.h.
1674
1675	2011-12-08 - 26c6fec - lavu 51.31.0
1676	Add av_log_format_line.
1677
1678	2011-12-03 - 976b095 - lavu 51.30.0
1679	Add AVERROR_BUG.
1680
1681	2011-11-24 - 573ffbb - lavu 51.28.1
1682	Add av_get_alt_sample_fmt() to samplefmt.h.
1683
1684	2011-11-03 - 96949da - lavu 51.23.0
1685	Add av_strcasecmp() and av_strncasecmp() to avstring.h.
1686
1687	2011-10-20 - b35e9e1 - lavu 51.22.0
1688	Add av_strtok() to avstring.h.
1689
1690	2012-01-03 - ad1c8dd / b73ec05 - lavu 51.34.100 / 51.21.0
1691	Add av_popcount64
1692
1693	2011-12-18 - 7c29313 / 8400b12 - lavc 53.46.1 / 53.28.1
1694	Deprecate AVFrame.age. The field is unused.
1695
1696	2011-12-12 - 8bc7fe4 / 5266045 - lavf 53.25.0 / 53.17.0
1697	Add avformat_close_input().
1698	Deprecate av_close_input_file() and av_close_input_stream().
1699
1700	2011-12-09 - c59b80c / b2890f5 - lavu 51.32.0 / 51.20.0 - audioconvert.h
1701	Expand the channel layout list.
1702
1703	2011-12-02 - e4de716 / 0eea212 - lavc 53.40.0 / 53.25.0
1704	Add nb_samples and extended_data fields to AVFrame.
1705	Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
1706	Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
1707	avcodec_decode_audio4() writes output samples to an AVFrame, which allows
1708	audio decoders to use get_buffer().
1709
1710	2011-12-04 - e4de716 / 560f773 - lavc 53.40.0 / 53.24.0
1711	Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
1712	Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
1713	Change AVCodecContext.error[4] to [8] at next major bump.
1714	Add AV_NUM_DATA_POINTERS to simplify the bump transition.
1715
1716	2011-11-24 - lavu 51.29.0 / 51.19.0
1717	92afb43 / bd97b2e - add planar RGB pixel formats
1718	92afb43 / 6b0768e - add PIX_FMT_PLANAR and PIX_FMT_RGB pixel descriptions
1719
1720	2011-11-23 - 8e576d5 / bbb46f3 - lavu 51.27.0 / 51.18.0
1721	Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
1722	av_samples_alloc(), to samplefmt.h.
1723
1724	2011-11-23 - 8e576d5 / 8889cc4 - lavu 51.27.0 / 51.17.0
1725	Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
1726
1727	2011-11-19 - dbb38bc / f3a29b7 - lavc 53.36.0 / 53.21.0
1728	Move some AVCodecContext fields to a new private struct, AVCodecInternal,
1729	which is accessed from a new field, AVCodecContext.internal.
1730	- fields moved:
1731	AVCodecContext.internal_buffer --> AVCodecInternal.buffer
1732	AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
1733	AVCodecContext.is_copy --> AVCodecInternal.is_copy
1734
1735	2011-11-16 - 8709ba9 / 6270671 - lavu 51.26.0 / 51.16.0
1736	Add av_timegm()
1737
1738	2011-11-13 - lavf 53.21.0 / 53.15.0
1739	New interrupt callback API, allowing per-AVFormatContext/AVIOContext
1740	interrupt callbacks.
1741	5f268ca / 6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
1742	AVFormatContext.
1743	5f268ca / 1dee0ac Add avio_open2() with additional parameters. Those are
1744	an interrupt callback and an options AVDictionary.
1745	This will allow passing AVOptions to protocols after lavf
1746	54.0.
1747
1748	2011-11-06 - 13b7781 / ba04ecf - lavu 51.24.0 / 51.14.0
1749	Add av_strcasecmp() and av_strncasecmp() to avstring.h.
1750
1751	2011-11-06 - 13b7781 / 07b172f - lavu 51.24.0 / 51.13.0
1752	Add av_toupper()/av_tolower()
1753
1754	2011-11-05 - d8cab5c / b6d08f4 - lavf 53.19.0 / 53.13.0
1755	Add avformat_network_init()/avformat_network_deinit()
1756
1757	2011-10-27 - 6faf0a2 / 512557b - lavc 53.24.0 / 53.15.0
1758	Remove avcodec_parse_frame.
1759	Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
1760
1761	2011-10-19 - d049257 / 569129a - lavf 53.17.0 / 53.10.0
1762	Add avformat_new_stream(). Deprecate av_new_stream().
1763
1764	2011-10-13 - 91eb1b1 / b631fba - lavf 53.16.0 / 53.9.0
1765	Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
1766
1767	2011-10-12 - lavu 51.21.0 / 51.12.0
1768	AVOptions API rewrite.
1769
1770	- f884ef0 / 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
1771	- new setting/getting functions with slightly different semantics:
1772	f884ef0 / dac66da av_set_string3 -> av_opt_set
1773	av_set_double -> av_opt_set_double
1774	av_set_q -> av_opt_set_q
1775	av_set_int -> av_opt_set_int
1776
1777	f884ef0 / 41d9d51 av_get_string -> av_opt_get
1778	av_get_double -> av_opt_get_double
1779	av_get_q -> av_opt_get_q
1780	av_get_int -> av_opt_get_int
1781
1782	- f884ef0 / 8c5dcaa trivial rename av_next_option -> av_opt_next
1783	- f884ef0 / 641c7af new functions - av_opt_child_next, av_opt_child_class_next
1784	and av_opt_find2()
1785
1786	2011-09-22 - a70e787 - lavu 51.17.0
1787	Add av_x_if_null().
1788
1789	2011-09-18 - 645cebb - lavc 53.16.0
1790	Add showall flag2
1791
1792	2011-09-16 - ea8de10 - lavfi 2.42.0
1793	Add avfilter_all_channel_layouts.
1794
1795	2011-09-16 - 9899037 - lavfi 2.41.0
1796	Rename avfilter_all_* function names to avfilter_make_all_*.
1797
1798	In particular, apply the renames:
1799	avfilter_all_formats -> avfilter_make_all_formats
1800	avfilter_all_channel_layouts -> avfilter_make_all_channel_layouts
1801	avfilter_all_packing_formats -> avfilter_make_all_packing_formats
1802
1803	2011-09-12 - 4381bdd - lavfi 2.40.0
1804	Change AVFilterBufferRefAudioProps.sample_rate type from uint32_t to int.
1805
1806	2011-09-12 - 2c03174 - lavfi 2.40.0
1807	Simplify signature for avfilter_get_audio_buffer(), make it
1808	consistent with avfilter_get_video_buffer().
1809
1810	2011-09-06 - 4f7dfe1 - lavfi 2.39.0
1811	Rename libavfilter/vsink_buffer.h to libavfilter/buffersink.h.
1812
1813	2011-09-06 - c4415f6 - lavfi 2.38.0
1814	Unify video and audio sink API.
1815
1816	In particular, add av_buffersink_get_buffer_ref(), deprecate
1817	av_vsink_buffer_get_video_buffer_ref() and change the value for the
1818	opaque field passed to the abuffersink init function.
1819
1820	2011-09-04 - 61e2e29 - lavu 51.16.0
1821	Add av_asprintf().
1822
1823	2011-08-22 - dacd827 - lavf 53.10.0
1824	Add av_find_program_from_stream().
1825
1826	2011-08-20 - 69e2c1a - lavu 51.13.0
1827	Add av_get_media_type_string().
1828
1829	2011-09-03 - 1889c67 / fb4ca26 - lavc 53.13.0
1830	lavf 53.11.0
1831	lsws 2.1.0
1832	Add {avcodec,avformat,sws}_get_class().
1833
1834	2011-08-03 - 1889c67 / c11fb82 - lavu 51.15.0
1835	Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
1836
1837	2011-08-14 - 323b930 - lavu 51.12.0
1838	Add av_fifo_peek2(), deprecate av_fifo_peek().
1839
1840	2011-08-26 - lavu 51.14.0 / 51.9.0
1841	- 976a8b2 / add41de..976a8b2 / abc78a5 Do not include intfloat_readwrite.h,
1842	mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
1843
1844	2011-08-16 - 27fbe31 / 48f9e45 - lavf 53.11.0 / 53.8.0
1845	Add avformat_query_codec().
1846
1847	2011-08-16 - 27fbe31 / bca06e7 - lavc 53.11.0
1848	Add avcodec_get_type().
1849
1850	2011-08-06 - 0cb233c / 2f63440 - lavf 53.7.0
1851	Add error_recognition to AVFormatContext.
1852
1853	2011-08-02 - 1d186e9 / 9d39cbf - lavc 53.9.1
1854	Add AV_PKT_FLAG_CORRUPT AVPacket flag.
1855
1856	2011-07-16 - b57df29 - lavfi 2.27.0
1857	Add audio packing negotiation fields and helper functions.
1858
1859	In particular, add AVFilterPacking enum, planar, in_packings and
1860	out_packings fields to AVFilterLink, and the functions:
1861	avfilter_set_common_packing_formats()
1862	avfilter_all_packing_formats()
1863
1864	2011-07-10 - 3602ad7 / a67c061 - lavf 53.6.0
1865	Add avformat_find_stream_info(), deprecate av_find_stream_info().
1866	NOTE: this was backported to 0.7
1867
1868	2011-07-10 - 3602ad7 / 0b950fe - lavc 53.8.0
1869	Add avcodec_open2(), deprecate avcodec_open().
1870	NOTE: this was backported to 0.7
1871
1872	Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
1873	avcodec_alloc_context2().
1874
1875	2011-07-01 - b442ca6 - lavf 53.5.0 - avformat.h
1876	Add function av_get_output_timestamp().
1877
1878	2011-06-28 - 5129336 - lavu 51.11.0 - avutil.h
1879	Define the AV_PICTURE_TYPE_NONE value in AVPictureType enum.
1880
1881
1882	-------- 8< --------- FFmpeg 0.7 was cut here -------- 8< ---------
1883
1884
1885
1886	-------- 8< --------- FFmpeg 0.8 was cut here -------- 8< ---------
1887
1888	2011-06-19 - fd2c0a5 - lavfi 2.23.0 - avfilter.h
1889	Add layout negotiation fields and helper functions.
1890
1891	In particular, add in_chlayouts and out_chlayouts to AVFilterLink,
1892	and the functions:
1893	avfilter_set_common_sample_formats()
1894	avfilter_set_common_channel_layouts()
1895	avfilter_all_channel_layouts()
1896
1897	2011-06-19 - 527ca39 - lavfi 2.22.0 - AVFilterFormats
1898	Change type of AVFilterFormats.formats from int * to int64_t *,
1899	and update formats handling API accordingly.
1900
1901	avfilter_make_format_list() still takes a int32_t array and converts
1902	it to int64_t. A new function, avfilter_make_format64_list(), that
1903	takes int64_t arrays has been added.
1904
1905	2011-06-19 - 44f669e - lavfi 2.21.0 - vsink_buffer.h
1906	Add video sink buffer and vsink_buffer.h public header.
1907
1908	2011-06-12 - 9fdf772 - lavfi 2.18.0 - avcodec.h
1909	Add avfilter_get_video_buffer_ref_from_frame() function in
1910	libavfilter/avcodec.h.
1911
1912	2011-06-12 - c535494 - lavfi 2.17.0 - avfiltergraph.h
1913	Add avfilter_inout_alloc() and avfilter_inout_free() functions.
1914
1915	2011-06-12 - 6119b23 - lavfi 2.16.0 - avfilter_graph_parse()
1916	Change avfilter_graph_parse() signature.
1917
1918	2011-06-23 - 686959e / 67e9ae1 - lavu 51.10.0 / 51.8.0 - attributes.h
1919	Add av_printf_format().
1920
1921	2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53.4.0 / 53.2.0 - avformat.h
1922	Add avformat_open_input and avformat_write_header().
1923	Deprecate av_open_input_stream, av_open_input_file,
1924	AVFormatParameters and av_write_header.
1925
1926	2011-06-16 - 2905e3f / 7e83e1c, 2905e3f / dc59ec5 - lavu 51.9.0 / 51.7.0 - opt.h
1927	Add av_opt_set_dict() and av_opt_find().
1928	Deprecate av_find_opt().
1929	Add AV_DICT_APPEND flag.
1930
1931	2011-06-10 - 45fb647 / cb7c11c - lavu 51.6.0 - opt.h
1932	Add av_opt_flag_is_set().
1933
1934	2011-06-10 - c381960 - lavfi 2.15.0 - avfilter_get_audio_buffer_ref_from_arrays
1935	Add avfilter_get_audio_buffer_ref_from_arrays() to avfilter.h.
1936
1937	2011-06-09 - f9ecb84 / d9f80ea - lavu 51.8.0 - AVMetadata
1938	Move AVMetadata from lavf to lavu and rename it to
1939	AVDictionary -- new installed header dict.h.
1940	All av_metadata_* functions renamed to av_dict_*.
1941
1942	2011-06-07 - d552f61 / a6703fa - lavu 51.8.0 - av_get_bytes_per_sample()
1943	Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
1944	Deprecate av_get_bits_per_sample_fmt().
1945
1946	2011-06-05 - f956924 / b39b062 - lavu 51.8.0 - opt.h
1947	Add av_opt_free convenience function.
1948
1949	2011-06-06 - 95a0242 - lavfi 2.14.0 - AVFilterBufferRefAudioProps
1950	Remove AVFilterBufferRefAudioProps.size, and use nb_samples in
1951	avfilter_get_audio_buffer() and avfilter_default_get_audio_buffer() in
1952	place of size.
1953
1954	2011-06-06 - 0bc2cca - lavu 51.6.0 - av_samples_alloc()
1955	Switch nb_channels and nb_samples parameters order in
1956	av_samples_alloc().
1957
1958	2011-06-06 - e1c7414 - lavu 51.5.0 - av_samples_*
1959	Change the data layout created by av_samples_fill_arrays() and
1960	av_samples_alloc().
1961
1962	2011-06-06 - 27bcf55 - lavfi 2.13.0 - vsrc_buffer.h
1963	Make av_vsrc_buffer_add_video_buffer_ref() accepts an additional
1964	flags parameter in input.
1965
1966	2011-06-03 - e977ca2 - lavfi 2.12.0 - avfilter_link_free()
1967	Add avfilter_link_free() function.
1968
1969	2011-06-02 - 5ad38d9 - lavu 51.4.0 - av_force_cpu_flags()
1970	Add av_cpu_flags() in libavutil/cpu.h.
1971
1972	2011-05-28 - e71f260 - lavu 51.3.0 - pixdesc.h
1973	Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
1974	avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
1975
1976	2011-05-25 - 39e4206 / 30315a8 - lavf 53.3.0 - avformat.h
1977	Add fps_probe_size to AVFormatContext.
1978
1979	2011-05-22 - 5ecdfd0 - lavf 53.2.0 - avformat.h
1980	Introduce avformat_alloc_output_context2() and deprecate
1981	avformat_alloc_output_context().
1982
1983	2011-05-22 - 83db719 - lavfi 2.10.0 - vsrc_buffer.h
1984	Make libavfilter/vsrc_buffer.h public.
1985
1986	2011-05-19 - c000a9f - lavfi 2.8.0 - avcodec.h
1987	Add av_vsrc_buffer_add_frame() to libavfilter/avcodec.h.
1988
1989	2011-05-14 - 9fdf772 - lavfi 2.6.0 - avcodec.h
1990	Add avfilter_get_video_buffer_ref_from_frame() to libavfilter/avcodec.h.
1991
1992	2011-05-18 - 75a37b5 / 64150ff - lavc 53.7.0 - AVCodecContext.request_sample_fmt
1993	Add request_sample_fmt field to AVCodecContext.
1994
1995	2011-05-10 - 59eb12f / 188dea1 - lavc 53.6.0 - avcodec.h
1996	Deprecate AVLPCType and the following fields in
1997	AVCodecContext: lpc_coeff_precision, prediction_order_method,
1998	min_partition_order, max_partition_order, lpc_type, lpc_passes.
1999	Corresponding FLAC encoder options should be used instead.
2000
2001	2011-05-07 - 9fdf772 - lavfi 2.5.0 - avcodec.h
2002	Add libavfilter/avcodec.h header and avfilter_copy_frame_props()
2003	function.
2004
2005	2011-05-07 - 18ded93 - lavc 53.5.0 - AVFrame
2006	Add format field to AVFrame.
2007
2008	2011-05-07 - 22333a6 - lavc 53.4.0 - AVFrame
2009	Add width and height fields to AVFrame.
2010
2011	2011-05-01 - 35fe66a - lavfi 2.4.0 - avfilter.h
2012	Rename AVFilterBufferRefVideoProps.pixel_aspect to
2013	sample_aspect_ratio.
2014
2015	2011-05-01 - 77e9dee - lavc 53.3.0 - AVFrame
2016	Add a sample_aspect_ratio field to AVFrame.
2017
2018	2011-05-01 - 1ba5727 - lavc 53.2.0 - AVFrame
2019	Add a pkt_pos field to AVFrame.
2020
2021	2011-04-29 - 35ceaa7 - lavu 51.2.0 - mem.h
2022	Add av_dynarray_add function for adding
2023	an element to a dynamic array.
2024
2025	2011-04-26 - d7e5aeb / bebe72f - lavu 51.1.0 - avutil.h
2026	Add AVPictureType enum and av_get_picture_type_char(), deprecate
2027	FF_*_TYPE defines and av_get_pict_type_char() defined in
2028	libavcodec/avcodec.h.
2029
2030	2011-04-26 - d7e5aeb / 10d3940 - lavfi 2.3.0 - avfilter.h
2031	Add pict_type and key_frame fields to AVFilterBufferRefVideo.
2032
2033	2011-04-26 - d7e5aeb / 7a11c82 - lavfi 2.2.0 - vsrc_buffer
2034	Add sample_aspect_ratio fields to vsrc_buffer arguments
2035
2036	2011-04-21 - 8772156 / 94f7451 - lavc 53.1.0 - avcodec.h
2037	Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
2038
2039	2011-04-15 - lavc 52.120.0 - avcodec.h
2040	AVPacket structure got additional members for passing side information:
2041	c407984 / 4de339e introduce side information for AVPacket
2042	c407984 / 2d8591c make containers pass palette change in AVPacket
2043
2044	2011-04-12 - lavf 52.107.0 - avio.h
2045	Avio cleanup, part II - deprecate the entire URLContext API:
2046	c55780d / 175389c add avio_check as a replacement for url_exist
2047	9891004 / ff1ec0c add avio_pause and avio_seek_time as replacements
2048	for _av_url_read_fseek/fpause
2049	d4d0932 / cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
2050	should be used instead.
2051	c88caa5 / 80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
2052	c88caa5 / f87b1b3 rename open flags: URL_* -> AVIO_*
2053	d4d0932 / f8270bb add avio_enum_protocols.
2054	d4d0932 / 5593f03 deprecate URLProtocol.
2055	d4d0932 / c486dad deprecate URLContext.
2056	d4d0932 / 026e175 deprecate the typedef for URLInterruptCB
2057	c88caa5 / 8e76a19 deprecate av_register_protocol2.
2058	11d7841 / b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
2059	11d7841 / 1305d93 deprecate av_url_read_seek
2060	11d7841 / fa104e1 deprecate av_url_read_pause
2061	434f248 / 727c7aa deprecate url_get_filename().
2062	434f248 / 5958df3 deprecate url_max_packet_size().
2063	434f248 / 1869ea0 deprecate url_get_file_handle().
2064	434f248 / 32a97d4 deprecate url_filesize().
2065	434f248 / e52a914 deprecate url_close().
2066	434f248 / 58a48c6 deprecate url_seek().
2067	434f248 / 925e908 deprecate url_write().
2068	434f248 / dce3756 deprecate url_read_complete().
2069	434f248 / bc371ac deprecate url_read().
2070	434f248 / 0589da0 deprecate url_open().
2071	434f248 / 62eaaea deprecate url_connect.
2072	434f248 / 5652bb9 deprecate url_alloc.
2073	434f248 / 333e894 deprecate url_open_protocol
2074	434f248 / e230705 deprecate url_poll and URLPollEntry
2075
2076	2011-04-08 - lavf 52.106.0 - avformat.h
2077	Minor avformat.h cleanup:
2078	d4d0932 / a9bf9d8 deprecate av_guess_image2_codec
2079	d4d0932 / c3675df rename avf_sdp_create->av_sdp_create
2080
2081	2011-04-03 - lavf 52.105.0 - avio.h
2082	Large-scale renaming/deprecating of AVIOContext-related functions:
2083	2cae980 / 724f6a0 deprecate url_fdopen
2084	2cae980 / 403ee83 deprecate url_open_dyn_packet_buf
2085	2cae980 / 6dc7d80 rename url_close_dyn_buf -> avio_close_dyn_buf
2086	2cae980 / b92c545 rename url_open_dyn_buf -> avio_open_dyn_buf
2087	2cae980 / 8978fed introduce an AVIOContext.seekable field as a replacement for
2088	AVIOContext.is_streamed and url_is_streamed()
2089	1caa412 / b64030f deprecate get_checksum()
2090	1caa412 / 4c4427a deprecate init_checksum()
2091	2fd41c9 / 4ec153b deprecate udp_set_remote_url/get_local_port
2092	4fa0e24 / 933e90a deprecate av_url_read_fseek/fpause
2093	4fa0e24 / 8d9769a deprecate url_fileno
2094	0fecf26 / b7f2fdd rename put_flush_packet -> avio_flush
2095	0fecf26 / 35f1023 deprecate url_close_buf
2096	0fecf26 / 83fddae deprecate url_open_buf
2097	0fecf26 / d9d86e0 rename url_fprintf -> avio_printf
2098	0fecf26 / 59f65d9 deprecate url_setbufsize
2099	6947b0c / 3e68b3b deprecate url_ferror
2100	e8bb2e2 deprecate url_fget_max_packet_size
2101	76aa876 rename url_fsize -> avio_size
2102	e519753 deprecate url_fgetc
2103	655e45e deprecate url_fgets
2104	a2704c9 rename url_ftell -> avio_tell
2105	e16ead0 deprecate get_strz() in favor of avio_get_str
2106	0300db8,2af07d3 rename url_fskip -> avio_skip
2107	6b4aa5d rename url_fseek -> avio_seek
2108	61840b4 deprecate put_tag
2109	22a3212 rename url_fopen/fclose -> avio_open/close.
2110	0ac8e2b deprecate put_nbyte
2111	77eb550 rename put_byte -> avio_w8
2112	put_[b/l]e<type> -> avio_w[b/l]<type>
2113	put_buffer -> avio_write
2114	b7effd4 rename get_byte -> avio_r8,
2115	get_[b/l]e<type> -> avio_r[b/l]<type>
2116	get_buffer -> avio_read
2117	b3db9ce deprecate get_partial_buffer
2118	8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
2119
2120	2011-03-25 - 27ef7b1 / 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
2121	Add audio_service_type field to AVCodecContext.
2122
2123	2011-03-17 - e309fdc - lavu 50.40.0 - pixfmt.h
2124	Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
2125
2126	2011-03-02 - 863c471 - lavf 52.103.0 - av_pkt_dump2, av_pkt_dump_log2
2127	Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
2128	source stream timebase for outputting timestamps. Deprecate
2129	av_pkt_dump and av_pkt_dump_log.
2130
2131	2011-02-20 - e731b8d - lavf 52.102.0 - avio.h
2132	* e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
2133	original, and move it to a private header so it is no longer
2134	part of our public API. Instead, use av_alloc_put_byte().
2135	* ae628ec - rename ByteIOContext to AVIOContext.
2136
2137	2011-02-16 - 09d171b - lavf 52.101.0 - avformat.h
2138	lavu 52.39.0 - parseutils.h
2139	* 610219a - Add av_ prefix to dump_format().
2140	* f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
2141	* ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
2142
2143	2011-02-15 - lavu 52.38.0 - merge libavcore
2144	libavcore is merged back completely into libavutil
2145
2146	2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
2147	Add vbv_delay field to AVCodecContext
2148
2149	2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
2150	Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
2151
2152	2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
2153	Add sample_aspect_ratio field to AVFilterLink.
2154
2155	2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
2156	Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
2157
2158	2011-02-09 - c0b102c - lavc 52.112.0 - avcodec_thread_init()
2159	Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
2160	set thread_count before calling avcodec_open.
2161
2162	2011-02-09 - 37b00b4 - lavc 52.111.0 - threading API
2163	Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
2164	release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
2165	Add thread_type and active_thread_type fields to AVCodecContext.
2166
2167	2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
2168	Add av_probe_input_buffer() to avformat.h for probing format from a
2169	ByteIOContext.
2170
2171	2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
2172	Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
2173
2174	2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
2175	Add avformat_free_context() in avformat.h.
2176
2177	2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
2178	Add CODEC_ID_PRORES to avcodec.h.
2179
2180	2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
2181	Add defines for H.264 * Constrained Baseline and Intra profiles
2182
2183	2011-02-02 - lavf 52.95.0
2184	* 50196a9 - add a new installed header version.h.
2185	* 4efd5cf, dccbd97, 93b78d1 - add several variants of public
2186	avio_{put,get}_str* functions. Deprecate corresponding semi-public
2187	{put,get}_str*.
2188
2189	2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
2190	Make av_dlog public.
2191
2192	2011-01-31 - 7b3ea55 - lavfi 1.76.0 - vsrc_buffer
2193	Add sample_aspect_ratio fields to vsrc_buffer arguments
2194
2195	2011-01-31 - 910b5b8 - lavfi 1.75.0 - AVFilterLink sample_aspect_ratio
2196	Add sample_aspect_ratio field to AVFilterLink.
2197
2198	2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
2199	Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
2200
2201	2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
2202	Add av_metadata_copy() in avformat.h.
2203
2204	2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
2205	Deprecate reordered_opaque in favor of pkt_pts/dts.
2206
2207	2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
2208	Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
2209	to not mess up dts.
2210
2211	2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
2212	Add pkt_pts to AVFrame.
2213
2214	2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
2215	Add av_get_profile_name to libavcodec/avcodec.h.
2216
2217	2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
2218	Add AV_PERM_NEG_LINESIZES in avfilter.h.
2219
2220	2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
2221	Add av_find_best_stream to libavformat/avformat.h.
2222
2223	2010-12-27 - 107a7e3 - lavf 52.90.0
2224	Add AVFMT_NOSTREAMS flag for formats with no streams,
2225	like e.g. text metadata.
2226
2227	2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
2228	Add functions av_file_map() and av_file_unmap() in file.h.
2229
2230	2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
2231	Add "not found" error codes:
2232	AVERROR_DEMUXER_NOT_FOUND
2233	AVERROR_MUXER_NOT_FOUND
2234	AVERROR_DECODER_NOT_FOUND
2235	AVERROR_ENCODER_NOT_FOUND
2236	AVERROR_PROTOCOL_NOT_FOUND
2237	AVERROR_FILTER_NOT_FOUND
2238	AVERROR_BSF_NOT_FOUND
2239	AVERROR_STREAM_NOT_FOUND
2240
2241	2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
2242	Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
2243	avcodec.h to avcore.h.
2244
2245	2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
2246	Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
2247
2248	2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
2249	Deprecate avcodec_pix_fmt_string() in favor of
2250	pixdesc.h/av_get_pix_fmt_string().
2251
2252	2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
2253	Add av_image_alloc() to libavcore/imgutils.h.
2254
2255	2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
2256	Add function avfilter_graph_create_filter() in avfiltergraph.h.
2257
2258	2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
2259	Add function avfilter_get_video_buffer_ref_from_arrays() in
2260	avfilter.h.
2261
2262	2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
2263	Add a public audio channel API in audioconvert.h, and deprecate the
2264	corresponding functions in libavcodec:
2265	avcodec_get_channel_name()
2266	avcodec_get_channel_layout()
2267	avcodec_get_channel_layout_string()
2268	avcodec_channel_layout_num_channels()
2269	and the CH_* macros defined in libavcodec/avcodec.h.
2270
2271	2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
2272	Add av_append_packet().
2273
2274	2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
2275	Add av_grow_packet().
2276
2277	2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
2278	Add av_parse_color() declared in libavcore/parseutils.h.
2279
2280	2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
2281	Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
2282	fields.
2283
2284	2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
2285	Make avfiltergraph.h public.
2286
2287	2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
2288	Remove declarations from avfiltergraph.h for the functions:
2289	avfilter_graph_check_validity()
2290	avfilter_graph_config_links()
2291	avfilter_graph_config_formats()
2292	which are now internal.
2293	Use avfilter_graph_config() instead.
2294
2295	2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
2296	Deprecate functions:
2297	av_parse_and_eval_expr(),
2298	av_parse_expr(),
2299	av_eval_expr(),
2300	av_free_expr(),
2301	in favor of the functions:
2302	av_expr_parse_and_eval(),
2303	av_expr_parse(),
2304	av_expr_eval(),
2305	av_expr_free().
2306
2307	2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
2308	Rename avfilter_destroy() to avfilter_free().
2309	This change breaks libavfilter API/ABI.
2310
2311	2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
2312	Remove graphparser.h header, move AVFilterInOut and
2313	avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
2314
2315	2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
2316	Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
2317	This change breaks libavfilter API.
2318
2319	2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
2320	Rename avfilter_graph_destroy() to avfilter_graph_free().
2321	This change breaks libavfilter API/ABI.
2322
2323	2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
2324	Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
2325
2326	2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
2327	Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
2328	deprecate av_get_bits_per_sample_format().
2329
2330	2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
2331	Add sample format functions in libavcore/samplefmt.h:
2332	av_get_sample_fmt_name(),
2333	av_get_sample_fmt(),
2334	av_get_sample_fmt_string(),
2335	and deprecate the corresponding libavcodec/audioconvert.h functions:
2336	avcodec_get_sample_fmt_name(),
2337	avcodec_get_sample_fmt(),
2338	avcodec_sample_fmt_string().
2339
2340	2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
2341	Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
2342	SampleFormat.
2343
2344	2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
2345	Add the function avfilter_graph_config() in avfiltergraph.h.
2346
2347	2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
2348	Change demuxers to export metadata in generic format and
2349	muxers to accept generic format. Deprecate the public
2350	conversion API.
2351
2352	2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
2353	Add time_base field to AVFilterLink.
2354
2355	2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
2356	Move av_set_options_string() from libavfilter/parseutils.h to
2357	libavutil/opt.h.
2358
2359	2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
2360	Make the AVFilterLink fields srcpad and dstpad store the pointers to
2361	the source and destination pads, rather than their indexes.
2362
2363	2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
2364	Move av_get_token() from libavfilter/parseutils.h to
2365	libavutil/avstring.h.
2366
2367	2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
2368	Add the functions sws_alloc_context() and sws_init_context().
2369
2370	2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
2371	Move libavcodec/opt.h to libavutil/opt.h.
2372
2373	2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
2374	Default of av_log() changed due to many problems to the old no repeat
2375	detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
2376	enabling it for your app!.
2377
2378	2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
2379	Deprecate av_opt_show() in favor or av_opt_show2().
2380
2381	2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
2382	Add av_popcount() to libavutil/common.h.
2383
2384	2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
2385	Add av_get_cpu_flags().
2386
2387	2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
2388	Add av_image_copy().
2389
2390	2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
2391	Add av_image_copy_plane().
2392
2393	2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
2394	Adopt hierarchical scheme for the imgutils.h function names,
2395	deprecate the old names.
2396
2397	2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
2398	Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
2399	of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
2400
2401	2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
2402	Add avcodec_get_channel_layout() in audioconvert.h.
2403
2404	2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
2405	Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
2406
2407	2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
2408	Add av_fill_image_max_pixstep() in imgutils.h.
2409
2410	2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
2411	Add the AV_NE macro.
2412
2413	2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
2414	Implement AVFilterBufferRefAudioProps struct for audio properties,
2415	get_audio_buffer(), filter_samples() functions and related changes.
2416
2417	2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
2418	Add av_get_image_linesize() in imgutils.h.
2419
2420	2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
2421	Resize data and linesize arrays in AVFilterBufferRef to 8.
2422
2423	This change breaks libavfilter API/ABI.
2424
2425	2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
2426	Add av_picture_data_copy in avcodec.h.
2427
2428	2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
2429	Change avfilter_open() signature:
2430	AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
2431	int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
2432
2433	This change breaks libavfilter API/ABI.
2434
2435	2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
2436	Add a type field to AVFilterBufferRef, and move video specific
2437	properties to AVFilterBufferRefVideoProps.
2438
2439	This change breaks libavfilter API/ABI.
2440
2441	2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
2442	Rename AVFilterLink fields:
2443	AVFilterLink.srcpic -> AVFilterLink.src_buf
2444	AVFilterLink.cur_pic -> AVFilterLink.cur_buf
2445	AVFilterLink.outpic -> AVFilterLink.out_buf
2446
2447	2010-08-07 - 7fce481 - lavfi 1.30.0
2448	Rename functions and fields:
2449	avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
2450	avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
2451	AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
2452
2453	2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
2454	Rename AVFilterPicRef to AVFilterBufferRef.
2455
2456	2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
2457	Move format field from AVFilterBuffer to AVFilterPicRef.
2458
2459	2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
2460	Deprecate avcodec_check_dimensions() in favor of the function
2461	av_check_image_size() defined in libavcore/imgutils.h.
2462
2463	2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
2464	Increase size of the arrays AVFilterBuffer.data and
2465	AVFilterBuffer.linesize from 4 to 8.
2466
2467	This change breaks libavfilter ABI.
2468
2469	2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
2470	Add functions av_fill_image_linesizes() and
2471	av_fill_image_pointers(), declared in libavcore/imgutils.h.
2472
2473	2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
2474	Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
2475	defined in libavcodec in favor of the newly added functions
2476	av_parse_video_size() and av_parse_video_rate() declared in
2477	libavcore/parseutils.h.
2478
2479	2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
2480	Add the M_PHI constant definition.
2481
2482	2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
2483	Add a type field to AVFilterLink.
2484
2485	Change the field types:
2486	enum PixelFormat format -> int format in AVFilterBuffer
2487	enum PixelFormat *formats -> int *formats in AVFilterFormats
2488	enum PixelFormat *format -> int format in AVFilterLink
2489
2490	Change the function signatures:
2491	AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
2492	AVFilterFormats *avfilter_make_format_list(const int *fmts);
2493
2494	int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
2495	int avfilter_add_format (AVFilterFormats **avff, int fmt);
2496
2497	AVFilterFormats *avfilter_all_colorspaces(void); ->
2498	AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
2499
2500	This change breaks libavfilter API/ABI.
2501
2502	2010-07-21 - aac6ca6 - lavcore 0.0.0
2503	Add libavcore.
2504
2505	2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
2506	Remove w and h fields from AVFilterBuffer.
2507
2508	2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
2509	Rename AVFilterPic to AVFilterBuffer.
2510
2511	2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
2512	Make url_fskip() return an int error code instead of void.
2513
2514	2010-07-11 - 23940f1 - lavc 52.83.0
2515	Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
2516	Add AVLPCType enum.
2517	Deprecate AVCodecContext.use_lpc.
2518
2519	2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
2520	Add a function for free the contents of a AVSubtitle generated by
2521	avcodec_decode_subtitle.
2522
2523	2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
2524	Make the bswap.h and intreadwrite.h API public.
2525
2526	2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
2527	Rename read/write_line() to av_read/write_image_line().
2528
2529	2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
2530	Add avfilter_copy_picref_props().
2531
2532	2010-07-03 - 2d525ef - lavc 52.79.0
2533	Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
2534	FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
2535
2536	2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
2537	Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
2538	lfg.h.
2539
2540	2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
2541	Extend av_parse_color() syntax, make it accept an alpha value specifier and
2542	set the alpha value to 255 by default.
2543
2544	2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
2545	Add priv_data_size and priv_data_class to URLProtocol.
2546
2547	2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
2548	Add url_alloc() and url_connect().
2549
2550	2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
2551	Add av_register_protocol2(), deprecating av_register_protocol().
2552
2553	2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
2554	Add av_compare_mod() to libavutil/mathematics.h.
2555
2556	2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
2557	Make the eval API public.
2558
2559	2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
2560	Add AV_BASE64_SIZE() macro.
2561
2562	2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
2563	Add av_get_codec_tag_string().
2564
2565
2566	-------- 8< --------- FFmpeg 0.6 was cut here -------- 8< ---------
2567
2568	2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
2569	Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
2570
2571	2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
2572	Add CODEC_CAP_EXPERIMENTAL flag.
2573	NOTE: this was backported to 0.6
2574
2575	2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
2576	Add av_get_random_seed().
2577
2578	2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
2579	Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
2580	NOTE: this was backported to 0.6
2581
2582	2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
2583	Add interlaced and top_field_first fields to AVFilterPicRef.
2584
2585	2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
2586	Add av_probe_input_format2 to API, it allows ignoring probe
2587	results below given score and returns the actual probe score.
2588
2589	2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
2590	Add a flag for av_metadata_set2() to disable overwriting of
2591	existing tags.
2592
2593	2010-04-01 - 0fb49b5 - lavc 52.66.0
2594	Add avcodec_get_edge_width().
2595
2596	2010-03-31 - d103218 - lavc 52.65.0
2597	Add avcodec_copy_context().
2598
2599	2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
2600	Make av_match_ext() public.
2601
2602	2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
2603	Move AVMediaType enum from libavcodec to libavutil.
2604
2605	2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
2606	Define AVMediaType enum, and use it instead of enum CodecType, which
2607	is deprecated and will be dropped at the next major bump.
2608
2609	2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
2610	Implement av_strerror().
2611
2612	2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
2613	Support DCT-I and DST-I.
2614
2615	2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
2616	Add AVFormatContext.start_time_realtime field.
2617
2618	2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
2619	Add AVFilterPicRef.pos field.
2620
2621	2010-03-13 - 60c144f - lavu 50.12.0 - error.h
2622	Move error code definitions from libavcodec/avcodec.h to
2623	the new public header libavutil/error.h.
2624
2625	2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
2626	Add public FFT interface.
2627
2628	2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
2629	Add av_stristr().
2630
2631	2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
2632	Add av_tree_enumerate().
2633
2634	2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
2635	Add av_compare_ts().
2636
2637	2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
2638	Add sws_getCoefficients().
2639
2640	2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
2641	Add a list of generic tag names, change 'author' -> 'artist',
2642	'year' -> 'date'.
2643
2644	2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
2645	Add av_get_pix_fmt().
2646
2647	2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
2648	Change constness attributes of sws_scale() parameters.
2649
2650	2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
2651	Add a log_ctx parameter to avfilter_graph_config_links().
2652
2653	2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
2654	Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
2655
2656	2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
2657	Change the avfilter_add_colorspace() signature, make it accept an
2658	(AVFilterFormats **) rather than an (AVFilterFormats *) as before.
2659
2660	2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
2661	Add avfilter_add_colorspace().
2662
2663	2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
2664	Add av_match_ext(), it should be used in place of match_ext().
2665
2666	2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
2667	Add av_guess_format(), it should be used in place of guess_format().
2668
2669	2009-12-13 - a181981 - lavf 52.43.0 - metadata API
2670	Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
2671	AV_METADATA_DONT_STRDUP_VAL.
2672
2673	2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
2674	Add av_d2str().
2675
2676	2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
2677	Add avg_frame_rate.
2678
2679	2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
2680	Introduce the av_bmg_next() function.
2681
2682	2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
2683	Add a slice_dir parameter to avfilter_draw_slice().
2684
2685	2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
2686	Remove the next field from AVFilter, this is not anymore required.
2687
2688	2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
2689	Introduce the avfilter_next() function.
2690
2691	2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
2692	Change the signature of avfilter_register() to make it return an
2693	int. This is required since now the registration operation may fail.
2694
2695	2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
2696	Make the pixdesc.h API public.
2697
2698	2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
2699	Add a next field to AVFilter, this is used for simplifying the
2700	registration and management of the registered filters.
2701
2702	2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
2703	Add a description field to AVFilter.
2704
2705	2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
2706	Change the interface of avfilter_make_format_list() from
2707	avfilter_make_format_list(int n, ...) to
2708	avfilter_make_format_list(enum PixelFormat *pix_fmts).
2709
2710	2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
2711	Make avfilter_get_video_buffer() recursive and add the w and h
2712	parameters to it.
2713
2714	2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
2715	Add w and h fields to AVFilterPic.
2716
2717	2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
2718	This is now an unsigned int instead of a signed int.
2719
2720	2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
2721	Add a pts field to AVSubtitle which gives the subtitle packet pts
2722	in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
2723	not work right without this.
2724
2725	2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
2726	PKT_FLAG_KEY has been deprecated and will be dropped at the next
2727	major version. Use AV_PKT_FLAG_KEY instead.
2728
2729	2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
2730	av_lockmgr_register() can be used to register a callback function
2731	that lavc (and in the future, libraries that depend on lavc) can use
2732	to implement mutexes. The application should provide a callback function
2733	that implements the AV_LOCK_* operations described in avcodec.h.
2734	When the lock manager is registered, FFmpeg is guaranteed to behave
2735	correctly in a multi-threaded application.
2736
2737	2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
2738	av_free_packet() is no longer an inline function. It is now exported.
2739
2740	2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
2741	Please use NULL instead. This has been supported since r16506
2742	(lavf > 52.23.1, lavc > 52.10.0).
2743
2744	2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
2745	The old decoding functions are deprecated, all new code should use the
2746	new functions avcodec_decode_video2(), avcodec_decode_audio3() and
2747	avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
2748	argument instead of a const uint8_t *buf / int buf_size pair.
2749
2750	2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
2751	Introduce the av_fifo_space() function.
2752
2753	2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
2754	Move AVPacket declaration from libavformat/avformat.h to
2755	libavcodec/avcodec.h.
2756
2757	2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
2758	Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
2759	PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
2760	Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
2761	PIX_FMT_BGR32_1 are now macros.
2762	avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
2763	Re-sort the enum PixelFormat list accordingly.
2764	This change breaks API/ABI backward compatibility.
2765
2766	2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
2767	Add the enum PixelFormat values:
2768	PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
2769	PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
2770
2771	2009-03-21 - ee6624e - lavu 50.0.0 - av_random*
2772	The Mersenne Twister PRNG implemented through the av_random* functions
2773	was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
2774	instead.
2775
2776	2009-03-08 - 41dd680 - lavu 50.0.0 - AVFifoBuffer
2777	av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
2778	and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
2779	and av_fifo_realloc2.
2780	In addition, the order of the function arguments of av_fifo_generic_read
2781	was changed to match av_fifo_generic_write.
2782	The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
2783	applications, they may not use sizeof() or directly access members.
2784
2785	2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
2786	Introduce a new metadata API (see av_metadata_get() and friends).
2787	The old API is now deprecated and should not be used anymore. This especially
2788	includes the following structure fields:
2789	- AVFormatContext.title
2790	- AVFormatContext.author
2791	- AVFormatContext.copyright
2792	- AVFormatContext.comment
2793	- AVFormatContext.album
2794	- AVFormatContext.year
2795	- AVFormatContext.track
2796	- AVFormatContext.genre
2797	- AVStream.language
2798	- AVStream.filename
2799	- AVProgram.provider_name
2800	- AVProgram.name
2801	- AVChapter.title
2802