1 Never assume the API of libav* to be stable unless at least 1 week has passed since
2 the last major version increase.
3 The last version increases were:
7 libavfilter: 2009-10-18
14 API changes, most recent first:
16 2010-12-04 - r25886 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
17 Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
19 2010-12-04 - r25879 - lavu 50.34.0 - av_get_pix_fmt_string()
20 Deprecate avcodec_pix_fmt_string() in favor of
21 pixdesc.h/av_get_pix_fmt_string().
23 2010-12-04 - r25878 - lavcore 1.15.0 - av_image_alloc()
24 Add av_image_alloc() to libavcore/imgutils.h.
26 2010-12-02 - r25862 - lavfi 1.67.0 - avfilter_graph_create_filter()
27 Add function avfilter_graph_create_filter() in avfiltergraph.h.
29 2010-11-25 - r25826 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
30 Add function avfilter_get_video_buffer_ref_from_arrays() in
33 2010-11-21 - r25787 - lavcore 0.14.0 - audioconvert.h
34 Add a public audio channel API in audioconvert.h, and deprecate the
35 corresponding functions in libavcodec:
36 avcodec_get_channel_name()
37 avcodec_get_channel_layout()
38 avcodec_get_channel_layout_string()
39 avcodec_channel_layout_num_channels()
40 and the CH_* macros defined in libavcodec/avcodec.h.
42 2010-11-21 - r25777 - lavf 52.85.0 - avformat.h
43 Add av_append_packet().
45 2010-11-21 - r25776 - lavc 52.97.0 - avcodec.h
48 2010-11-17 - r25761 - lavcore 0.13.0 - parseutils.h
49 Add av_parse_color() declared in libavcore/parseutils.h.
51 2010-11-13 - r25745 - lavc 52.95.0 - AVCodecContext
52 Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
55 2010-11-13 - r25740 - lavfi 1.62.0 - avfiltergraph.h
56 Make avfiltergraph.h public.
58 2010-11-13 - r25737 - lavfi 1.61.0 - avfiltergraph.h
59 Remove declarations from avfiltergraph.h for the functions:
60 avfilter_graph_check_validity()
61 avfilter_graph_config_links()
62 avfilter_graph_config_formats()
63 which are now internal.
64 Use avfilter_graph_config() instead.
66 2010-11-08 - r25708 - lavu 50.33.0 - eval.h
68 av_parse_and_eval_expr(),
72 in favor of the functions:
73 av_expr_parse_and_eval(),
78 2010-11-08 - r25707 - lavfi 1.59.0 - avfilter_free()
79 Rename avfilter_destroy() to avfilter_free().
80 This change breaks libavfilter API/ABI.
82 2010-11-07 - r25705 - lavfi 1.58.0 - avfiltergraph.h
83 Remove graphparser.h header, move AVFilterInOut and
84 avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
86 2010-11-07 - r25700 - lavfi 1.57.0 - AVFilterInOut
87 Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
88 This change breaks libavfilter API.
90 2010-11-04 - r25674 - lavfi 1.56.0 - avfilter_graph_free()
91 Rename avfilter_graph_destroy() to avfilter_graph_free().
92 This change breaks libavfilter API/ABI.
94 2010-11-04 - r25673 - lavfi 1.55.0 - avfilter_graph_alloc()
95 Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
97 2010-11-02 - r25654 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
98 Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
99 deprecate av_get_bits_per_sample_format().
101 2010-11-02 - r25653 - lavcore 0.11.0 - samplefmt.h
102 Add sample format functions in libavcore/samplefmt.h:
103 av_get_sample_fmt_name(),
105 av_get_sample_fmt_string(),
106 and deprecate the corresponding libavcodec/audioconvert.h functions:
107 avcodec_get_sample_fmt_name(),
108 avcodec_get_sample_fmt(),
109 avcodec_sample_fmt_string().
111 2010-11-02 - r25652 - lavcore 0.10.0 - samplefmt.h
112 Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
115 2010-10-16 - r25502 - lavfi 1.52.0 - avfilter_graph_config()
116 Add the function avfilter_graph_config() in avfiltergraph.h.
118 2010-10-15 - r25493 - lavf 52.83.0 - metadata API
119 Change demuxers to export metadata in generic format and
120 muxers to accept generic format. Deprecate the public
123 2010-10-10 - r25441 - lavfi 1.49.0 - AVFilterLink.time_base
124 Add time_base field to AVFilterLink.
126 2010-09-27 - r25236 - lavu 50.31.0 - av_set_options_string()
127 Move av_set_options_string() from libavfilter/parseutils.h to
130 2010-09-27 - r25227 - lavfi 1.47.0 - AVFilterLink
131 Make the AVFilterLink fields srcpad and dstpad store the pointers to
132 the source and destination pads, rather than their indexes.
134 2010-09-27 - r25225 - lavu 50.30.0 - av_get_token()
135 Move av_get_token() from libavfilter/parseutils.h to
136 libavutil/avstring.h.
138 2010-09-26 - r32368 - lsws 0.12.0 - swscale.h
139 Add the functions sws_alloc_context() and sws_init_context().
141 2010-09-26 - r25210 - lavu 50.29.0 - opt.h
142 Move libavcodec/opt.h to libavutil/opt.h.
144 2010-09-24 - r25174 - lavu 50.28.0 - av_log_set_flags()
145 Default of av_log() changed due to many problems to the old no repeat
146 detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
147 enabling it for your app!.
149 2010-09-24 - r25167 - lavc 52.90.0 - av_opt_show2()
150 Deprecate av_opt_show() in favor or av_opt_show2().
152 2010-09-14 - r25120 - lavu 50.27.0 - av_popcount()
153 Add av_popcount() to libavutil/common.h.
155 2010-09-08 - r25076 - lavu 50.26.0 - av_get_cpu_flags()
156 Add av_get_cpu_flags().
158 2010-09-07 - r25067 - lavcore 0.9.0 - av_image_copy()
161 2010-09-07 - r25064 - lavcore 0.8.0 - av_image_copy_plane()
162 Add av_image_copy_plane().
164 2010-09-07 - r25057 - lavcore 0.7.0 - imgutils.h
165 Adopt hierarchical scheme for the imgutils.h function names,
166 deprecate the old names.
168 2010-09-04 - r25040 - lavu 50.25.0 - AV_CPU_FLAG_*
169 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
170 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
172 2010-08-26 - r24936 - lavc 52.87.0 - avcodec_get_channel_layout()
173 Add avcodec_get_channel_layout() in audioconvert.h.
175 2010-08-20 - r24851 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
176 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
178 2010-08-18 - r24827 - lavcore 0.5.0 - av_fill_image_max_pixstep()
179 Add av_fill_image_max_pixstep() in imgutils.h.
181 2010-08-17 - r24814 - lavu 50.24.0 - AV_NE()
184 2010-08-17 - r24811 - lavfi 1.36.0 - audio framework
185 Implement AVFilterBufferRefAudioProps struct for audio properties,
186 get_audio_buffer(), filter_samples() functions and related changes.
188 2010-08-12 - r24787 - lavcore 0.4.0 - av_get_image_linesize()
189 Add av_get_image_linesize() in imgutils.h.
191 2010-08-11 - r24773 - lavfi 1.34.0 - AVFilterBufferRef
192 Resize data and linesize arrays in AVFilterBufferRef to 8.
194 This change breaks libavfilter API/ABI.
196 2010-08-11 - r24768 - lavc 52.85.0 - av_picture_data_copy()
197 Add av_picture_data_copy in avcodec.h.
199 2010-08-11 - r24765 - lavfi 1.33.0 - avfilter_open()
200 Change avfilter_open() signature:
201 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
202 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
204 This change breaks libavfilter API/ABI.
206 2010-08-11 - r24763 - lavfi 1.32.0 - AVFilterBufferRef
207 Add a type field to AVFilterBufferRef, and move video specific
208 properties to AVFilterBufferRefVideoProps.
210 This change breaks libavfilter API/ABI.
212 2010-08-07 - r24732 - lavfi 1.31.0 - AVFilterLink
213 Rename AVFilterLink fields:
214 AVFilterLink.srcpic -> AVFilterLink.src_buf
215 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
216 AVFilterLink.outpic -> AVFilterLink.out_buf
218 2010-08-07 - r24731 - lavfi 1.30.0
219 Rename functions and fields:
220 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
221 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
222 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
224 2010-08-07 - r24730 - lavfi 1.29.0 - AVFilterBufferRef
225 Rename AVFilterPicRef to AVFilterBufferRef.
227 2010-08-07 - r24728 - lavfi 1.28.0 - AVFilterBuffer
228 Move format field from AVFilterBuffer to AVFilterPicRef.
230 2010-08-06 - r24709 - lavcore 0.3.0 - av_check_image_size()
231 Deprecate avcodec_check_dimensions() in favor of the function
232 av_check_image_size() defined in libavcore/imgutils.h.
234 2010-07-30 - r24592 - lavfi 1.27.0 - AVFilterBuffer
235 Increase size of the arrays AVFilterBuffer.data and
236 AVFilterBuffer.linesize from 4 to 8.
238 This change breaks libavfilter ABI.
240 2010-07-29 - r24583 - lavcore 0.2.0 - imgutils.h
241 Add functions av_fill_image_linesizes() and
242 av_fill_image_pointers(), declared in libavcore/imgutils.h.
244 2010-07-27 - r24518 - lavcore 0.1.0 - parseutils.h
245 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
246 defined in libavcodec in favor of the newly added functions
247 av_parse_video_size() and av_parse_video_rate() declared in
248 libavcore/parseutils.h.
250 2010-07-23 - r24439 - lavu 50.23.0 - mathematics.h
251 Add the M_PHI constant definition.
253 2010-07-22 - r24424 - lavfi 1.26.0 - media format generalization
254 Add a type field to AVFilterLink.
256 Change the field types:
257 enum PixelFormat format -> int format in AVFilterBuffer
258 enum PixelFormat *formats -> int *formats in AVFilterFormats
259 enum PixelFormat *format -> int format in AVFilterLink
261 Change the function signatures:
262 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
263 AVFilterFormats *avfilter_make_format_list(const int *fmts);
265 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
266 int avfilter_add_format (AVFilterFormats **avff, int fmt);
268 AVFilterFormats *avfilter_all_colorspaces(void); ->
269 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
271 This change breaks libavfilter API/ABI.
273 2010-07-21 - r24393 - lavcore 0.0.0
276 2010-07-17 - r24291 - lavfi 1.25.0 - AVFilterBuffer
277 Remove w and h fields from AVFilterBuffer.
279 2010-07-17 - r24284 - lavfi 1.24.0 - AVFilterBuffer
280 Rename AVFilterPic to AVFilterBuffer.
282 2010-07-17 - r24278 - lavf 52.74.0 - url_fskip()
283 Make url_fskip() return an int error code instead of void.
285 2010-07-11 - r24199 - lavc 52.83.0
286 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
288 Deprecate AVCodecContext.use_lpc.
290 2010-07-11 - r24185 - lavc 52.82.0 - avsubtitle_free()
291 Add a function for free the contents of a AVSubtitle generated by
292 avcodec_decode_subtitle.
294 2010-07-11 - r24174 - lavu 50.22.0 - bswap.h and intreadwrite.h
295 Make the bswap.h and intreadwrite.h API public.
297 2010-07-08 - r24101 - lavu 50.21.0 - pixdesc.h
298 Rename read/write_line() to av_read/write_image_line().
300 2010-07-07 - r24091 - lavfi 1.21.0 - avfilter_copy_picref_props()
301 Add avfilter_copy_picref_props().
303 2010-07-03 - r24021 - lavc 52.79.0
304 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
305 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
307 2010-07-02 - r23985 - lavu 50.20.0 - lfg.h
308 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
311 2010-06-28 - r23835 - lavfi 1.20.1 - av_parse_color()
312 Extend av_parse_color() syntax, make it accept an alpha value specifier and
313 set the alpha value to 255 by default.
315 2010-06-22 - r23706 - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
316 Add priv_data_size and priv_data_class to URLProtocol.
318 2010-06-22 - r23704 - lavf 52.70.0 - url_alloc(), url_connect()
319 Add url_alloc() and url_connect().
321 2010-06-22 - r23702 - lavf 52.69.0 - av_register_protocol2()
322 Add av_register_protocol2(), deprecating av_register_protocol().
324 2010-06-09 - r23551 - lavu 50.19.0 - av_compare_mod()
325 Add av_compare_mod() to libavutil/mathematics.h.
327 2010-06-05 - r23485 - lavu 50.18.0 - eval API
328 Make the eval API public.
330 2010-06-04 - r23461 - lavu 50.17.0 - AV_BASE64_SIZE
331 Add AV_BASE64_SIZE() macro.
333 2010-06-02 - r23421 - lavc 52.73.0 - av_get_codec_tag_string()
334 Add av_get_codec_tag_string().
336 2010-06-01 - r31301 - lsws 0.11.0 - convertPalette API
337 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
339 2010-05-26 - r23334 - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
340 Add CODEC_CAP_EXPERIMENTAL flag.
342 2010-05-23 - r23255 - lavu 50.16.0 - av_get_random_seed()
343 Add av_get_random_seed().
345 2010-05-18 - r23161 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
346 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
348 2010-05-09 - r23066 - lavfi 1.20.0 - AVFilterPicRef
349 Add interlaced and top_field_first fields to AVFilterPicRef.
351 2010-05-01 - r23002 - lavf 52.62.0 - probe function
352 Add av_probe_input_format2 to API, it allows ignoring probe
353 results below given score and returns the actual probe score.
355 2010-04-01 - r22806 - lavf 52.61.0 - metadata API
356 Add a flag for av_metadata_set2() to disable overwriting of
359 2010-04-01 - r22753 - lavc 52.66.0
360 Add avcodec_get_edge_width().
362 2010-03-31 - r22750 - lavc 52.65.0
363 Add avcodec_copy_context().
365 2010-03-31 - r22748 - lavf 52.60.0 - av_match_ext()
366 Make av_match_ext() public.
368 2010-03-31 - r22736 - lavu 50.14.0 - AVMediaType
369 Move AVMediaType enum from libavcodec to libavutil.
371 2010-03-31 - r22735 - lavc 52.64.0 - AVMediaType
372 Define AVMediaType enum, and use it instead of enum CodecType, which
373 is deprecated and will be dropped at the next major bump.
375 2010-03-25 - r22684 - lavu 50.13.0 - av_strerror()
376 Implement av_strerror().
378 2010-03-23 - r22649 - lavc 52.60.0 - av_dct_init()
379 Support DCT-I and DST-I.
381 2010-03-15 - r22540 - lavf 52.56.0 - AVFormatContext.start_time_realtime
382 Add AVFormatContext.start_time_realtime field.
384 2010-03-13 - r22506 - lavfi 1.18.0 - AVFilterPicRef.pos
385 Add AVFilterPicRef.pos field.
387 2010-03-13 - r22501 - lavu 50.12.0 - error.h
388 Move error code definitions from libavcodec/avcodec.h to
389 the new public header libavutil/error.h.
391 2010-03-07 - r22291 - lavc 52.56.0 - avfft.h
392 Add public FFT interface.
394 2010-03-06 - r22251 - lavu 50.11.0 - av_stristr()
397 2010-03-03 - r22174 - lavu 50.10.0 - av_tree_enumerate()
398 Add av_tree_enumerate().
400 2010-02-07 - r21673 - lavu 50.9.0 - av_compare_ts()
403 2010-02-05 - r30513 - lsws 0.10.0 - sws_getCoefficients()
404 Add sws_getCoefficients().
406 2010-02-01 - r21587 - lavf 52.50.0 - metadata API
407 Add a list of generic tag names, change 'author' -> 'artist',
410 2010-01-30 - r21545 - lavu 50.8.0 - av_get_pix_fmt()
411 Add av_get_pix_fmt().
413 2010-01-21 - r30381 - lsws 0.9.0 - sws_scale()
414 Change constness attributes of sws_scale() parameters.
416 2010-01-10 - r21121 - lavfi 1.15.0 - avfilter_graph_config_links()
417 Add a log_ctx parameter to avfilter_graph_config_links().
419 2010-01-07 - r30236 - lsws 0.8.0 - sws_isSupported{In,Out}put()
420 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
422 2010-01-06 - r21035 - lavfi 1.14.0 - avfilter_add_colorspace()
423 Change the avfilter_add_colorspace() signature, make it accept an
424 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
426 2010-01-03 - r21007 - lavfi 1.13.0 - avfilter_add_colorspace()
427 Add avfilter_add_colorspace().
429 2010-01-02 - r20998 - lavf 52.46.0 - av_match_ext()
430 Add av_match_ext(), it should be used in place of match_ext().
432 2010-01-01 - r20991 - lavf 52.45.0 - av_guess_format()
433 Add av_guess_format(), it should be used in place of guess_format().
435 2009-12-13 - r20834 - lavf 52.43.0 - metadata API
436 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
437 AV_METADATA_DONT_STRDUP_VAL.
439 2009-12-13 - r20829 - lavu 50.7.0 - avstring.h API
442 2009-12-13 - r20826 - lavc 52.42.0 - AVStream
445 2009-12-12 - r20808 - lavu 50.6.0 - av_bmg_next()
446 Introduce the av_bmg_next() function.
448 2009-12-05 - r20734 - lavfi 1.12.0 - avfilter_draw_slice()
449 Add a slice_dir parameter to avfilter_draw_slice().
451 2009-11-26 - r20611 - lavfi 1.11.0 - AVFilter
452 Remove the next field from AVFilter, this is not anymore required.
454 2009-11-25 - r20607 - lavfi 1.10.0 - avfilter_next()
455 Introduce the avfilter_next() function.
457 2009-11-25 - r20605 - lavfi 1.9.0 - avfilter_register()
458 Change the signature of avfilter_register() to make it return an
459 int. This is required since now the registration operation may fail.
461 2009-11-25 - r20603 - lavu 50.5.0 - pixdesc.h API
462 Make the pixdesc.h API public.
464 2009-10-27 - r20385 - lavfi 1.5.0 - AVFilter.next
465 Add a next field to AVFilter, this is used for simplifying the
466 registration and management of the registered filters.
468 2009-10-23 - r20356 - lavfi 1.4.1 - AVFilter.description
469 Add a description field to AVFilter.
471 2009-10-19 - r20302 - lavfi 1.3.0 - avfilter_make_format_list()
472 Change the interface of avfilter_make_format_list() from
473 avfilter_make_format_list(int n, ...) to
474 avfilter_make_format_list(enum PixelFormat *pix_fmts).
476 2009-10-18 - r20272 - lavfi 1.0.0 - avfilter_get_video_buffer()
477 Make avfilter_get_video_buffer() recursive and add the w and h
480 2009-10-07 - r20189 - lavfi 0.5.1 - AVFilterPic
481 Add w and h fields to AVFilterPic.
483 2009-06-22 - r19250 - lavf 52.34.1 - AVFormatContext.packet_size
484 This is now an unsigned int instead of a signed int.
486 2009-06-19 - r19222 - lavc 52.32.0 - AVSubtitle.pts
487 Add a pts field to AVSubtitle which gives the subtitle packet pts
488 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
489 not work right without this.
491 2009-06-03 - r19078 - lavc 52.30.2 - AV_PKT_FLAG_KEY
492 PKT_FLAG_KEY has been deprecated and will be dropped at the next
493 major version. Use AV_PKT_FLAG_KEY instead.
495 2009-06-01 - r19025 - lavc 52.30.0 - av_lockmgr_register()
496 av_lockmgr_register() can be used to register a callback function
497 that lavc (and in the future, libraries that depend on lavc) can use
498 to implement mutexes. The application should provide a callback function
499 that implements the AV_LOCK_* operations described in avcodec.h.
500 When the lock manager is registered, FFmpeg is guaranteed to behave
501 correctly in a multi-threaded application.
503 2009-04-30 - r18719 - lavc 52.28.0 - av_free_packet()
504 av_free_packet() is no longer an inline function. It is now exported.
506 2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
507 Please use NULL instead. This has been supported since r16506
508 (lavf > 52.23.1, lavc > 52.10.0).
510 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
511 The old decoding functions are deprecated, all new code should use the
512 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
513 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
514 argument instead of a const uint8_t *buf / int buf_size pair.
516 2009-04-03 - r18321 - lavu 50.3.0 - av_fifo_space()
517 Introduce the av_fifo_space() function.
519 2009-04-02 - r18317 - lavc 52.23.0 - AVPacket
520 Move AVPacket declaration from libavformat/avformat.h to
521 libavcodec/avcodec.h.
523 2009-03-22 - r18163 - lavu 50.2.0 - RGB32 pixel formats
524 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
525 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
526 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
527 PIX_FMT_BGR32_1 are now macros.
528 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
529 Re-sort the enum PixelFormat list accordingly.
530 This change breaks API/ABI backward compatibility.
532 2009-03-22 - r18133 - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
533 Add the enum PixelFormat values:
534 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
535 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
537 2009-03-21 - r18116 - lavu 50.0.0 - av_random*
538 The Mersenne Twister PRNG implemented through the av_random* functions
539 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
542 2009-03-08 - r17869 - lavu 50.0.0 - AVFifoBuffer
543 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
544 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
545 and av_fifo_realloc2.
546 In addition, the order of the function arguments of av_fifo_generic_read
547 was changed to match av_fifo_generic_write.
548 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
549 applications, they may not use sizeof() or directly access members.
551 2009-03-01 - r17682 - lavf 52.31.0 - Generic metadata API
552 Introduce a new metadata API (see av_metadata_get() and friends).
553 The old API is now deprecated and should not be used anymore. This especially
554 includes the following structure fields:
555 - AVFormatContext.title
556 - AVFormatContext.author
557 - AVFormatContext.copyright
558 - AVFormatContext.comment
559 - AVFormatContext.album
560 - AVFormatContext.year
561 - AVFormatContext.track
562 - AVFormatContext.genre
565 - AVProgram.provider_name