1 Never assume the API of libav* to be stable unless at least 1 month has passed
2 since the last major version increase.
4 The last version increases were:
6 libavdevice: 2011-04-18
7 libavfilter: 2011-04-18
8 libavformat: 2012-01-27
9 libavresample: 2012-xx-xx
10 libswscale: 2011-06-20
14 API changes, most recent first:
16 2012-xx-xx - xxxxxxx - lavr 0.0.0
17 Add libavresample audio conversion library
19 2012-xx-xx - xxxxxxx - lavu 51.28.0 - audio_fifo.h
20 Add audio FIFO functions:
23 av_audio_fifo_realloc()
31 2012-xx-xx - xxxxxxx - lavfi 2.16.0 - avfiltergraph.h
32 Add avfilter_graph_parse2(), avfilter_inout_alloc() and
33 avfilter_inout_free() functions.
35 2012-xx-xx - xxxxxxx - lavu 51.27.0 - samplefmt.h
36 Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
38 2012-xx-xx - xxxxxxx - lavu 51.26.0 - audioconvert.h
39 Add av_get_default_channel_layout()
41 2012-03-06 - 4d851f8 - lavu 51.25.0 - cpu.h
42 Add av_set_cpu_flags_mask().
44 2012-03-05 - lavc 54.8.0
45 6699d07 Add av_get_exact_bits_per_sample()
46 9524cf7 Add av_get_audio_frame_duration()
48 2012-03-04 - 44fe77b - lavc 54.7.0 - avcodec.h
49 Add av_codec_is_encoder/decoder().
51 2012-03-01 - 442c132 - lavc 54.3.0 - avcodec.h
52 Add av_packet_shrink_side_data.
54 2012-02-29 - dd2a4bc - lavf 54.2.0 - avformat.h
55 Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
56 used for dealing with attached pictures/cover art.
58 2012-02-25 - c9bca80 - lavu 51.24.0 - error.h
60 NOTE: this was backported to 0.8
62 2012-02-20 - e9cda85 - lavc 54.2.0
63 Add duration field to AVCodecParserContext
65 2012-02-20 - 0b42a93 - lavu 51.23.1 - mathematics.h
66 Add av_rescale_q_rnd()
68 2012-02-08 - 38d5533 - lavu 51.22.1 - pixdesc.h
69 Add PIX_FMT_PSEUDOPAL flag.
71 2012-02-08 - 52f82a1 - lavc 54.01.0
72 Add avcodec_encode_video2() and deprecate avcodec_encode_video().
74 2012-02-01 - 316fc74 - lavc 54.01.0
75 Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
76 memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
77 zero-padded bytes at the end.
79 2012-01-31 - dd6d3b0 - lavf 54.01.0
80 Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
81 NOTE: this was backported to 0.8
83 2012-01-31 - af08d9a - lavc 54.01.0
84 Add avcodec_is_open() function.
85 NOTE: this was backported to 0.8
87 2012-01-30 - 8b93312 - lavu 51.22.0 - intfloat.h
88 Add a new installed header libavutil/intfloat.h with int/float punning
90 NOTE: this was backported to 0.8
92 2012-01-25 - lavf 53.22.0
93 f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
94 buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
95 muxers supporting it (av_write_frame makes sure it is called
96 only for muxers with this flag).
98 ------------------------------8<-------------------------------------
99 0.8 branch was cut here
100 ----------------------------->8--------------------------------------
102 2012-01-15 - lavc 53.34.0
103 New audio encoding API:
104 b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
106 5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
107 b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
108 Add AVCodec.encode2().
110 2012-01-12 - 3167dc9 - lavfi 2.15.0
111 Add a new installed header -- libavfilter/version.h -- with version macros.
113 2011-01-03 - b73ec05 - lavu 51.21.0
116 2011-12-25 - lavfi 2.14.0
117 e1d9dbf Add a new installed header - buffersrc.h
118 It contains a new function av_buffersrc_buffer() that allows passing
119 frames to the 'buffer' filter, but unlike av_vsrc_buffer_add_frame()
120 it allows for direct rendering.
121 1c9e340 Add avfilter_copy_frame_props() for copying properties from
122 AVFrame to AVFilterBufferRef.
124 2011-12-25 - lavc 53.31.0
125 Add the following new fields to AVFrame:
126 b58dbb5 sample_aspect_ratio
127 3a2ddf7 width, height
130 2011-12-18 - 8400b12 - lavc 53.28.1
131 Deprecate AVFrame.age. The field is unused.
133 2011-12-12 - 5266045 - lavf 53.17.0
134 Add avformat_close_input().
135 Deprecate av_close_input_file() and av_close_input_stream().
137 2011-12-02 - 0eea212 - lavc 53.25.0
138 Add nb_samples and extended_data fields to AVFrame.
139 Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
140 Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
141 avcodec_decode_audio4() writes output samples to an AVFrame, which allows
142 audio decoders to use get_buffer().
144 2011-12-04 - 560f773 - lavc 53.24.0
145 Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
146 Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
147 Change AVCodecContext.error[4] to [8] at next major bump.
148 Add AV_NUM_DATA_POINTERS to simplify the bump transition.
150 2011-11-23 - bbb46f3 - lavu 51.18.0
151 Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
152 av_samples_alloc(), to samplefmt.h.
154 2011-11-23 - 8889cc4 - lavu 51.17.0
155 Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
157 2011-11-19 - f3a29b7 - lavc 53.21.0
158 Move some AVCodecContext fields to a new private struct, AVCodecInternal,
159 which is accessed from a new field, AVCodecContext.internal.
161 AVCodecContext.internal_buffer --> AVCodecInternal.buffer
162 AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
163 AVCodecContext.is_copy --> AVCodecInternal.is_copy
165 2011-11-16 - 6270671 - lavu 51.16.0
168 2011-11-13 - lavf 53.15.0
169 New interrupt callback API, allowing per-AVFormatContext/AVIOContext
171 6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
173 1dee0ac Add avio_open2() with additional parameters. Those are
174 an interrupt callback and an options AVDictionary.
175 This will allow passing AVOptions to protocols after lavf
178 2011-11-06 - ba04ecf - lavu 51.14.0
179 Add av_strcasecmp() and av_strncasecmp() to avstring.h.
181 2011-11-06 - 07b172f - lavu 51.13.0
182 Add av_toupper()/av_tolower()
184 2011-11-05 - b6d08f4 - lavf 53.13.0
185 Add avformat_network_init()/avformat_network_deinit()
187 2011-10-27 - 512557b - lavc 53.15.0
188 Remove avcodec_parse_frame.
189 Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
191 2011-10-19 - 569129a - lavf 53.10.0
192 Add avformat_new_stream(). Deprecate av_new_stream().
194 2011-10-13 - b631fba - lavf 53.9.0
195 Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
197 2011-10-12 - lavu 51.12.0
198 AVOptions API rewrite.
200 - 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
201 - new setting/getting functions with slightly different semantics:
202 dac66da av_set_string3 -> av_opt_set
203 av_set_double -> av_opt_set_double
204 av_set_q -> av_opt_set_q
205 av_set_int -> av_opt_set_int
207 41d9d51 av_get_string -> av_opt_get
208 av_get_double -> av_opt_get_double
209 av_get_q -> av_opt_get_q
210 av_get_int -> av_opt_get_int
212 - 8c5dcaa trivial rename av_next_option -> av_opt_next
213 - 641c7af new functions - av_opt_child_next, av_opt_child_class_next
216 2011-09-03 - fb4ca26 - lavc 53.10.0
219 Add {avcodec,avformat,sws}_get_class().
221 2011-09-03 - c11fb82 - lavu 51.10.0
222 Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
224 2011-08-26 - lavu 51.9.0
225 - f2011ed Add av_fifo_peek2(), deprecate av_fifo_peek().
226 - add41de..abc78a5 Do not include intfloat_readwrite.h,
227 mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
229 2011-08-16 - 48f9e45 - lavf 53.4.0
230 Add avformat_query_codec().
232 2011-08-16 - bca06e7 - lavc 53.8.0
233 Add avcodec_get_type().
235 2011-08-06 - 2f63440 - lavf 53.4.0
236 Add error_recognition to AVFormatContext.
238 2011-08-02 - 9d39cbf - lavc 53.7.1
239 Add AV_PKT_FLAG_CORRUPT AVPacket flag.
241 2011-07-10 - a67c061 - lavf 53.3.0
242 Add avformat_find_stream_info(), deprecate av_find_stream_info().
243 NOTE: this was backported to 0.7
245 2011-07-10 - 0b950fe - lavc 53.6.0
246 Add avcodec_open2(), deprecate avcodec_open().
247 NOTE: this was backported to 0.7
249 Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
250 avcodec_alloc_context2().
252 2011-06-23 - 67e9ae1 - lavu 51.8.0 - attributes.h
253 Add av_printf_format().
255 ------------------------------8<-------------------------------------
256 0.7 branch was cut here
257 ----------------------------->8--------------------------------------
259 2011-06-16 - 05e84c9, 25de595 - lavf 53.2.0 - avformat.h
260 Add avformat_open_input and avformat_write_header().
261 Deprecate av_open_input_stream, av_open_input_file,
262 AVFormatParameters and av_write_header.
264 2011-06-16 - 7e83e1c, dc59ec5 - lavu 51.7.0 - opt.h
265 Add av_opt_set_dict() and av_opt_find().
266 Deprecate av_find_opt().
267 Add AV_DICT_APPEND flag.
269 2011-06-10 - cb7c11c - lavu 51.6.0 - opt.h
270 Add av_opt_flag_is_set().
272 2011-06-08 - d9f80ea - lavu 51.5.0 - AVMetadata
273 Move AVMetadata from lavf to lavu and rename it to
274 AVDictionary -- new installed header dict.h.
275 All av_metadata_* functions renamed to av_dict_*.
277 2011-06-07 - a6703fa - lavu 51.4.0 - av_get_bytes_per_sample()
278 Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
279 Deprecate av_get_bits_per_sample_fmt().
281 2011-06-05 - b39b062 - lavu 51.3.0 - opt.h
282 Add av_opt_free convenience function.
284 2011-05-28 - 0420bd7 - lavu 51.2.0 - pixdesc.h
285 Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
286 avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
288 2011-05-25 - 30315a8 - lavf 53.1.0 - avformat.h
289 Add fps_probe_size to AVFormatContext.
291 2011-05-18 - 64150ff - lavc 53.4.0 - AVCodecContext.request_sample_fmt
292 Add request_sample_fmt field to AVCodecContext.
294 2011-05-10 - 188dea1 - lavc 53.3.0 - avcodec.h
295 Deprecate AVLPCType and the following fields in
296 AVCodecContext: lpc_coeff_precision, prediction_order_method,
297 min_partition_order, max_partition_order, lpc_type, lpc_passes.
298 Corresponding FLAC encoder options should be used instead.
300 2011-04-26 - bebe72f - lavu 51.1.0 - avutil.h
301 Add AVPictureType enum and av_get_picture_type_char(), deprecate
302 FF_*_TYPE defines and av_get_pict_type_char() defined in
303 libavcodec/avcodec.h.
305 2011-04-26 - 10d3940 - lavfi 2.3.0 - avfilter.h
306 Add pict_type and key_frame fields to AVFilterBufferRefVideo.
308 2011-04-26 - 7a11c82 - lavfi 2.2.0 - vsrc_buffer
309 Add sample_aspect_ratio fields to vsrc_buffer arguments
311 2011-04-21 - 94f7451 - lavc 53.1.0 - avcodec.h
312 Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
314 2011-04-15 - lavc 52.120.0 - avcodec.h
315 AVPacket structure got additional members for passing side information:
316 4de339e introduce side information for AVPacket
317 2d8591c make containers pass palette change in AVPacket
319 2011-04-12 - lavf 52.107.0 - avio.h
320 Avio cleanup, part II - deprecate the entire URLContext API:
321 175389c add avio_check as a replacement for url_exist
322 ff1ec0c add avio_pause and avio_seek_time as replacements
323 for _av_url_read_fseek/fpause
324 cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
325 should be used instead.
326 80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
327 f87b1b3 rename open flags: URL_* -> AVIO_*
328 f8270bb add avio_enum_protocols.
329 5593f03 deprecate URLProtocol.
330 c486dad deprecate URLContext.
331 026e175 deprecate the typedef for URLInterruptCB
332 8e76a19 deprecate av_register_protocol2.
333 b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
334 1305d93 deprecate av_url_read_seek
335 fa104e1 deprecate av_url_read_pause
336 727c7aa deprecate url_get_filename().
337 5958df3 deprecate url_max_packet_size().
338 1869ea0 deprecate url_get_file_handle().
339 32a97d4 deprecate url_filesize().
340 e52a914 deprecate url_close().
341 58a48c6 deprecate url_seek().
342 925e908 deprecate url_write().
343 dce3756 deprecate url_read_complete().
344 bc371ac deprecate url_read().
345 0589da0 deprecate url_open().
346 62eaaea deprecate url_connect.
347 5652bb9 deprecate url_alloc.
348 333e894 deprecate url_open_protocol
349 e230705 deprecate url_poll and URLPollEntry
351 2011-04-10 - lavu 50.40.0 - pixfmt.h
352 Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
354 2011-04-08 - lavf 52.106.0 - avformat.h
355 Minor avformat.h cleanup:
356 a9bf9d8 deprecate av_guess_image2_codec
357 c3675df rename avf_sdp_create->av_sdp_create
359 2011-04-03 - lavf 52.105.0 - avio.h
360 Large-scale renaming/deprecating of AVIOContext-related functions:
361 724f6a0 deprecate url_fdopen
362 403ee83 deprecate url_open_dyn_packet_buf
363 6dc7d80 rename url_close_dyn_buf -> avio_close_dyn_buf
364 b92c545 rename url_open_dyn_buf -> avio_open_dyn_buf
365 8978fed introduce an AVIOContext.seekable field as a replacement for
366 AVIOContext.is_streamed and url_is_streamed()
367 b64030f deprecate get_checksum()
368 4c4427a deprecate init_checksum()
369 4ec153b deprecate udp_set_remote_url/get_local_port
370 933e90a deprecate av_url_read_fseek/fpause
371 8d9769a deprecate url_fileno
372 b7f2fdd rename put_flush_packet -> avio_flush
373 35f1023 deprecate url_close_buf
374 83fddae deprecate url_open_buf
375 d9d86e0 rename url_fprintf -> avio_printf
376 59f65d9 deprecate url_setbufsize
377 3e68b3b deprecate url_ferror
378 66e5b1d deprecate url_feof
379 e8bb2e2 deprecate url_fget_max_packet_size
380 76aa876 rename url_fsize -> avio_size
381 e519753 deprecate url_fgetc
382 655e45e deprecate url_fgets
383 a2704c9 rename url_ftell -> avio_tell
384 e16ead0 deprecate get_strz() in favor of avio_get_str
385 0300db8,2af07d3 rename url_fskip -> avio_skip
386 6b4aa5d rename url_fseek -> avio_seek
387 61840b4 deprecate put_tag
388 22a3212 rename url_fopen/fclose -> avio_open/close.
389 0ac8e2b deprecate put_nbyte
390 77eb550 rename put_byte -> avio_w8
391 put_[b/l]e<type> -> avio_w[b/l]<type>
392 put_buffer -> avio_write
393 b7effd4 rename get_byte -> avio_r8,
394 get_[b/l]e<type> -> avio_r[b/l]<type>
395 get_buffer -> avio_read
396 b3db9ce deprecate get_partial_buffer
397 8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
399 2011-03-25 - 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
400 Add audio_service_type field to AVCodecContext.
402 2011-03-02 - 863c471 - lavf 52.103.0 - av_pkt_dump2, av_pkt_dump_log2
403 Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
404 source stream timebase for outputting timestamps. Deprecate
405 av_pkt_dump and av_pkt_dump_log.
407 2011-02-20 - e731b8d - lavf 52.102.0 - avio.h
408 * e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
409 original, and move it to a private header so it is no longer
410 part of our public API. Instead, use av_alloc_put_byte().
411 * ae628ec - rename ByteIOContext to AVIOContext.
413 2011-02-16 - 09d171b - lavf 52.101.0 - avformat.h
414 lavu 52.39.0 - parseutils.h
415 * 610219a - Add av_ prefix to dump_format().
416 * f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
417 * ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
419 2011-02-15 - lavu 52.38.0 - merge libavcore
420 libavcore is merged back completely into libavutil
422 2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
423 Add vbv_delay field to AVCodecContext
425 2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
426 Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
428 2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
429 Add sample_aspect_ratio field to AVFilterLink.
431 2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
432 Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
434 2011-02-09 - 5592734 - lavc 52.112.0 - avcodec_thread_init()
435 Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
436 set thread_count before calling avcodec_open.
438 2011-02-09 - 778b08a - lavc 52.111.0 - threading API
439 Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
440 release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
441 Add thread_type and active_thread_type fields to AVCodecContext.
443 2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
444 Add av_probe_input_buffer() to avformat.h for probing format from a
447 2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
448 Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
450 2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
451 Add avformat_free_context() in avformat.h.
453 2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
454 Add CODEC_ID_PRORES to avcodec.h.
456 2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
457 Add defines for H.264 * Constrained Baseline and Intra profiles
459 2011-02-02 - lavf 52.95.0
460 * 50196a9 - add a new installed header version.h.
461 * 4efd5cf, dccbd97, 93b78d1 - add several variants of public
462 avio_{put,get}_str* functions. Deprecate corresponding semi-public
465 2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
468 2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
469 Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
471 2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
472 Add av_metadata_copy() in avformat.h.
474 2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
475 Deprecate reordered_opaque in favor of pkt_pts/dts.
477 2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
478 Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
481 2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
482 Add pkt_pts to AVFrame.
484 2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
485 Add av_get_profile_name to libavcodec/avcodec.h.
487 2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
488 Add AV_PERM_NEG_LINESIZES in avfilter.h.
490 2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
491 Add av_find_best_stream to libavformat/avformat.h.
493 2010-12-27 - 107a7e3 - lavf 52.90.0
494 Add AVFMT_NOSTREAMS flag for formats with no streams,
495 like e.g. text metadata.
497 2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
498 Add functions av_file_map() and av_file_unmap() in file.h.
500 2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
501 Add "not found" error codes:
502 AVERROR_DEMUXER_NOT_FOUND
503 AVERROR_MUXER_NOT_FOUND
504 AVERROR_DECODER_NOT_FOUND
505 AVERROR_ENCODER_NOT_FOUND
506 AVERROR_PROTOCOL_NOT_FOUND
507 AVERROR_FILTER_NOT_FOUND
508 AVERROR_BSF_NOT_FOUND
509 AVERROR_STREAM_NOT_FOUND
511 2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
512 Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
513 avcodec.h to avcore.h.
515 2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
516 Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
518 2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
519 Deprecate avcodec_pix_fmt_string() in favor of
520 pixdesc.h/av_get_pix_fmt_string().
522 2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
523 Add av_image_alloc() to libavcore/imgutils.h.
525 2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
526 Add function avfilter_graph_create_filter() in avfiltergraph.h.
528 2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
529 Add function avfilter_get_video_buffer_ref_from_arrays() in
532 2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
533 Add a public audio channel API in audioconvert.h, and deprecate the
534 corresponding functions in libavcodec:
535 avcodec_get_channel_name()
536 avcodec_get_channel_layout()
537 avcodec_get_channel_layout_string()
538 avcodec_channel_layout_num_channels()
539 and the CH_* macros defined in libavcodec/avcodec.h.
541 2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
542 Add av_append_packet().
544 2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
545 Add av_grow_packet().
547 2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
548 Add av_parse_color() declared in libavcore/parseutils.h.
550 2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
551 Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
554 2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
555 Make avfiltergraph.h public.
557 2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
558 Remove declarations from avfiltergraph.h for the functions:
559 avfilter_graph_check_validity()
560 avfilter_graph_config_links()
561 avfilter_graph_config_formats()
562 which are now internal.
563 Use avfilter_graph_config() instead.
565 2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
567 av_parse_and_eval_expr(),
571 in favor of the functions:
572 av_expr_parse_and_eval(),
577 2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
578 Rename avfilter_destroy() to avfilter_free().
579 This change breaks libavfilter API/ABI.
581 2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
582 Remove graphparser.h header, move AVFilterInOut and
583 avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
585 2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
586 Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
587 This change breaks libavfilter API.
589 2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
590 Rename avfilter_graph_destroy() to avfilter_graph_free().
591 This change breaks libavfilter API/ABI.
593 2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
594 Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
596 2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
597 Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
598 deprecate av_get_bits_per_sample_format().
600 2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
601 Add sample format functions in libavcore/samplefmt.h:
602 av_get_sample_fmt_name(),
604 av_get_sample_fmt_string(),
605 and deprecate the corresponding libavcodec/audioconvert.h functions:
606 avcodec_get_sample_fmt_name(),
607 avcodec_get_sample_fmt(),
608 avcodec_sample_fmt_string().
610 2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
611 Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
614 2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
615 Add the function avfilter_graph_config() in avfiltergraph.h.
617 2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
618 Change demuxers to export metadata in generic format and
619 muxers to accept generic format. Deprecate the public
622 2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
623 Add time_base field to AVFilterLink.
625 2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
626 Move av_set_options_string() from libavfilter/parseutils.h to
629 2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
630 Make the AVFilterLink fields srcpad and dstpad store the pointers to
631 the source and destination pads, rather than their indexes.
633 2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
634 Move av_get_token() from libavfilter/parseutils.h to
635 libavutil/avstring.h.
637 2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
638 Add the functions sws_alloc_context() and sws_init_context().
640 2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
641 Move libavcodec/opt.h to libavutil/opt.h.
643 2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
644 Default of av_log() changed due to many problems to the old no repeat
645 detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
646 enabling it for your app!.
648 2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
649 Deprecate av_opt_show() in favor or av_opt_show2().
651 2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
652 Add av_popcount() to libavutil/common.h.
654 2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
655 Add av_get_cpu_flags().
657 2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
660 2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
661 Add av_image_copy_plane().
663 2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
664 Adopt hierarchical scheme for the imgutils.h function names,
665 deprecate the old names.
667 2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
668 Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
669 of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
671 2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
672 Add avcodec_get_channel_layout() in audioconvert.h.
674 2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
675 Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
677 2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
678 Add av_fill_image_max_pixstep() in imgutils.h.
680 2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
683 2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
684 Implement AVFilterBufferRefAudioProps struct for audio properties,
685 get_audio_buffer(), filter_samples() functions and related changes.
687 2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
688 Add av_get_image_linesize() in imgutils.h.
690 2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
691 Resize data and linesize arrays in AVFilterBufferRef to 8.
693 This change breaks libavfilter API/ABI.
695 2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
696 Add av_picture_data_copy in avcodec.h.
698 2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
699 Change avfilter_open() signature:
700 AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
701 int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
703 This change breaks libavfilter API/ABI.
705 2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
706 Add a type field to AVFilterBufferRef, and move video specific
707 properties to AVFilterBufferRefVideoProps.
709 This change breaks libavfilter API/ABI.
711 2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
712 Rename AVFilterLink fields:
713 AVFilterLink.srcpic -> AVFilterLink.src_buf
714 AVFilterLink.cur_pic -> AVFilterLink.cur_buf
715 AVFilterLink.outpic -> AVFilterLink.out_buf
717 2010-08-07 - 7fce481 - lavfi 1.30.0
718 Rename functions and fields:
719 avfilter_(un)ref_pic -> avfilter_(un)ref_buffer
720 avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
721 AVFilterBufferRef.pic -> AVFilterBufferRef.buffer
723 2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
724 Rename AVFilterPicRef to AVFilterBufferRef.
726 2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
727 Move format field from AVFilterBuffer to AVFilterPicRef.
729 2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
730 Deprecate avcodec_check_dimensions() in favor of the function
731 av_check_image_size() defined in libavcore/imgutils.h.
733 2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
734 Increase size of the arrays AVFilterBuffer.data and
735 AVFilterBuffer.linesize from 4 to 8.
737 This change breaks libavfilter ABI.
739 2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
740 Add functions av_fill_image_linesizes() and
741 av_fill_image_pointers(), declared in libavcore/imgutils.h.
743 2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
744 Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
745 defined in libavcodec in favor of the newly added functions
746 av_parse_video_size() and av_parse_video_rate() declared in
747 libavcore/parseutils.h.
749 2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
750 Add the M_PHI constant definition.
752 2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
753 Add a type field to AVFilterLink.
755 Change the field types:
756 enum PixelFormat format -> int format in AVFilterBuffer
757 enum PixelFormat *formats -> int *formats in AVFilterFormats
758 enum PixelFormat *format -> int format in AVFilterLink
760 Change the function signatures:
761 AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
762 AVFilterFormats *avfilter_make_format_list(const int *fmts);
764 int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
765 int avfilter_add_format (AVFilterFormats **avff, int fmt);
767 AVFilterFormats *avfilter_all_colorspaces(void); ->
768 AVFilterFormats *avfilter_all_formats (enum AVMediaType type);
770 This change breaks libavfilter API/ABI.
772 2010-07-21 - aac6ca6 - lavcore 0.0.0
775 2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
776 Remove w and h fields from AVFilterBuffer.
778 2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
779 Rename AVFilterPic to AVFilterBuffer.
781 2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
782 Make url_fskip() return an int error code instead of void.
784 2010-07-11 - 23940f1 - lavc 52.83.0
785 Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
787 Deprecate AVCodecContext.use_lpc.
789 2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
790 Add a function for free the contents of a AVSubtitle generated by
791 avcodec_decode_subtitle.
793 2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
794 Make the bswap.h and intreadwrite.h API public.
796 2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
797 Rename read/write_line() to av_read/write_image_line().
799 2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
800 Add avfilter_copy_picref_props().
802 2010-07-03 - 2d525ef - lavc 52.79.0
803 Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
804 FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
806 2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
807 Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
810 2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
811 Extend av_parse_color() syntax, make it accept an alpha value specifier and
812 set the alpha value to 255 by default.
814 2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
815 Add priv_data_size and priv_data_class to URLProtocol.
817 2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
818 Add url_alloc() and url_connect().
820 2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
821 Add av_register_protocol2(), deprecating av_register_protocol().
823 2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
824 Add av_compare_mod() to libavutil/mathematics.h.
826 2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
827 Make the eval API public.
829 2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
830 Add AV_BASE64_SIZE() macro.
832 2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
833 Add av_get_codec_tag_string().
835 2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
836 Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
838 2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
839 Add CODEC_CAP_EXPERIMENTAL flag.
840 NOTE: this was backported to 0.6
842 2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
843 Add av_get_random_seed().
845 2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
846 Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
847 NOTE: this was backported to 0.6
849 2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
850 Add interlaced and top_field_first fields to AVFilterPicRef.
852 ------------------------------8<-------------------------------------
853 0.6 branch was cut here
854 ----------------------------->8--------------------------------------
856 2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
857 Add av_probe_input_format2 to API, it allows ignoring probe
858 results below given score and returns the actual probe score.
860 2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
861 Add a flag for av_metadata_set2() to disable overwriting of
864 2010-04-01 - 0fb49b5 - lavc 52.66.0
865 Add avcodec_get_edge_width().
867 2010-03-31 - d103218 - lavc 52.65.0
868 Add avcodec_copy_context().
870 2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
871 Make av_match_ext() public.
873 2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
874 Move AVMediaType enum from libavcodec to libavutil.
876 2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
877 Define AVMediaType enum, and use it instead of enum CodecType, which
878 is deprecated and will be dropped at the next major bump.
880 2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
881 Implement av_strerror().
883 2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
884 Support DCT-I and DST-I.
886 2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
887 Add AVFormatContext.start_time_realtime field.
889 2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
890 Add AVFilterPicRef.pos field.
892 2010-03-13 - 60c144f - lavu 50.12.0 - error.h
893 Move error code definitions from libavcodec/avcodec.h to
894 the new public header libavutil/error.h.
896 2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
897 Add public FFT interface.
899 2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
902 2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
903 Add av_tree_enumerate().
905 2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
908 2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
909 Add sws_getCoefficients().
911 2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
912 Add a list of generic tag names, change 'author' -> 'artist',
915 2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
916 Add av_get_pix_fmt().
918 2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
919 Change constness attributes of sws_scale() parameters.
921 2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
922 Add a log_ctx parameter to avfilter_graph_config_links().
924 2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
925 Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
927 2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
928 Change the avfilter_add_colorspace() signature, make it accept an
929 (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
931 2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
932 Add avfilter_add_colorspace().
934 2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
935 Add av_match_ext(), it should be used in place of match_ext().
937 2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
938 Add av_guess_format(), it should be used in place of guess_format().
940 2009-12-13 - a181981 - lavf 52.43.0 - metadata API
941 Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
942 AV_METADATA_DONT_STRDUP_VAL.
944 2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
947 2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
950 2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
951 Introduce the av_bmg_next() function.
953 2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
954 Add a slice_dir parameter to avfilter_draw_slice().
956 2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
957 Remove the next field from AVFilter, this is not anymore required.
959 2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
960 Introduce the avfilter_next() function.
962 2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
963 Change the signature of avfilter_register() to make it return an
964 int. This is required since now the registration operation may fail.
966 2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
967 Make the pixdesc.h API public.
969 2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
970 Add a next field to AVFilter, this is used for simplifying the
971 registration and management of the registered filters.
973 2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
974 Add a description field to AVFilter.
976 2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
977 Change the interface of avfilter_make_format_list() from
978 avfilter_make_format_list(int n, ...) to
979 avfilter_make_format_list(enum PixelFormat *pix_fmts).
981 2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
982 Make avfilter_get_video_buffer() recursive and add the w and h
985 2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
986 Add w and h fields to AVFilterPic.
988 2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
989 This is now an unsigned int instead of a signed int.
991 2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
992 Add a pts field to AVSubtitle which gives the subtitle packet pts
993 in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
994 not work right without this.
996 2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
997 PKT_FLAG_KEY has been deprecated and will be dropped at the next
998 major version. Use AV_PKT_FLAG_KEY instead.
1000 2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
1001 av_lockmgr_register() can be used to register a callback function
1002 that lavc (and in the future, libraries that depend on lavc) can use
1003 to implement mutexes. The application should provide a callback function
1004 that implements the AV_LOCK_* operations described in avcodec.h.
1005 When the lock manager is registered, FFmpeg is guaranteed to behave
1006 correctly in a multi-threaded application.
1008 2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
1009 av_free_packet() is no longer an inline function. It is now exported.
1011 2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
1012 Please use NULL instead. This has been supported since r16506
1013 (lavf > 52.23.1, lavc > 52.10.0).
1015 2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
1016 The old decoding functions are deprecated, all new code should use the
1017 new functions avcodec_decode_video2(), avcodec_decode_audio3() and
1018 avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
1019 argument instead of a const uint8_t *buf / int buf_size pair.
1021 2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
1022 Introduce the av_fifo_space() function.
1024 2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
1025 Move AVPacket declaration from libavformat/avformat.h to
1026 libavcodec/avcodec.h.
1028 2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
1029 Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
1030 PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
1031 Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
1032 PIX_FMT_BGR32_1 are now macros.
1033 avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
1034 Re-sort the enum PixelFormat list accordingly.
1035 This change breaks API/ABI backward compatibility.
1037 2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
1038 Add the enum PixelFormat values:
1039 PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
1040 PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
1042 2009-03-21 - ee6624e - lavu 50.0.0 - av_random*
1043 The Mersenne Twister PRNG implemented through the av_random* functions
1044 was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
1047 2009-03-08 - 41dd680 - lavu 50.0.0 - AVFifoBuffer
1048 av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
1049 and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
1050 and av_fifo_realloc2.
1051 In addition, the order of the function arguments of av_fifo_generic_read
1052 was changed to match av_fifo_generic_write.
1053 The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
1054 applications, they may not use sizeof() or directly access members.
1056 2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
1057 Introduce a new metadata API (see av_metadata_get() and friends).
1058 The old API is now deprecated and should not be used anymore. This especially
1059 includes the following structure fields:
1060 - AVFormatContext.title
1061 - AVFormatContext.author
1062 - AVFormatContext.copyright
1063 - AVFormatContext.comment
1064 - AVFormatContext.album
1065 - AVFormatContext.year
1066 - AVFormatContext.track
1067 - AVFormatContext.genre
1070 - AVProgram.provider_name