FFmpeg API 变更记录

悠悠 2022-06-10 23:28 245阅读 0赞

最近一两年内FFmpeg项目发展的速度很快，本来是一件好事。但是随之而来的问题就是其API（接口函数）一直在发生变动。这么一来基于旧一点版本的FFmpeg的程序的代码在最新的类库上可能就跑不通了。

例如一年前的程序中，获取媒体信息使用的函数是av\_find\_stream\_info()。但是最近的版本中，av\_find\_stream\_info()函数已经无法使用了，取而代之的是avformat\_find\_stream\_info()。再比如，早一些的程序中，打开解码器可以使用avcodec\_open()，但是新版本的程序中必须使用avcodec\_open2()。而早期版本的FFmpeg中打开媒体的函数av\_open\_input\_file()也已经被avformat\_open\_input()所取代。可以看出一些与libavformat相关的av\_\*\*\*()都变更为了avformat\_\*\*\*()，这一趋势也说明FFmpeg的API正在慢慢朝着“名称更加规范”的方向发展。

在FFmpeg的doc目录下碰巧看到了一个FFmpeg的API变更记录，记载了到今天为止FFmpeg所有的API变化情况，在这里记录一下。

整个文件中主要有三种记录：

> Add：新增的
> 
> Change/Rename：修改的
> 
> Deprecate：过时的。以后很有可能删除。
> 
> Remove：删除的  
>

文件位于doc/APIchanges，内容如下。

Never assume the API of libav\* to be stable unless at least 1 month has passed  
since the last major version increase or the API was added.  
  
  
The last version increases were:  
libavcodec:    2014-08-09  
libavdevice:   2014-08-09  
libavfilter:   2014-08-09  
libavformat:   2014-08-09  
libavresample: 2014-08-09  
libpostproc:   2014-08-09  
libswresample: 2014-08-09  
libswscale:    2014-08-09  
libavutil:     2014-08-09  
  
  
  
  
API changes, most recent first:  
  
  
2014-11-xx - xxxxxxx - lavc 56.6.0 - vorbis\_parser.h  
  Add a public API for parsing vorbis packets.  
  
  
2014-10-xx - xxxxxxx - lavc 56.5.0 - avcodec.h  
  Replace AVCodecContext.time\_base used for decoding  
  with AVCodecContext.framerate.  
  
  
2014-10-xx - xxxxxxx - lavc 56.4.0 - avcodec.h  
  Add AV\_HWACCEL\_FLAG\_IGNORE\_LEVEL flag to av\_vdpau\_bind\_context().  
  
  
2014-10-13 - xxxxxxx - lavc 56.03.0 - avcodec.h  
  Add AVCodecContext.initial\_padding. Deprecate the use of AVCodecContext.delay  
  for audio encoding.  
  
  
2014-09-xx - xxxxxxx - lavu 54.04.0 - pixdesc.h  
  Add API to return the name of frame and context color properties.  
  
  
2014-09-xx - xxxxxxx - lavc 56.2.0 - vdpau.h  
  Add av\_vdpau\_bind\_context(). This function should now be used for creating  
  (or resetting) a AVVDPAUContext instead of av\_vdpau\_alloc\_context().  
  
  
2014-10-02 - xxxxxxx - lavc 56.2.100 - avcodec.h  
2014-10-02 - xxxxxxx - lavu 54.9.100 - frame.h  
  Add AV\_FRAME\_DATA\_SKIP\_SAMPLES. Add lavc CODEC\_FLAG2\_SKIP\_MANUAL and  
  AVOption "skip\_manual", which makes lavc export skip information via  
  AV\_FRAME\_DATA\_SKIP\_SAMPLES AVFrame side data, instead of skipping and  
  discarding samples automatically.  
  
  
2014-10-02 - xxxxxxx - lavu 54.8.100 - avstring.h  
  Add av\_match\_list()  
  
  
2014-09-24 - xxxxxxx - libpostproc 53.1.100  
  Add visualization support  
  
  
2014-09-xx - xxxxxxx - lavc 56.1.101 - dv\_profile.h  
  deprecate avpriv\_dv\_frame\_profile2(), which was made public by accident.  
  
  
  
  
\-------- 8< --------- FFmpeg 2.4 was cut here -------- 8< ---------  
  
  
2014-08-28 - f30a815 / 9301486 - lavc 56.1.100 / 56.1.0 - avcodec.h  
  Add AV\_PKT\_DATA\_STEREO3D to export [Container][]\-level stereo3d information.  
  
  
2014-08-25 - 215db29 / b263f8f - lavf 56.3.100 / 56.3.0 - avformat.h  
  Add AVFormatContext.max\_ts\_probe.  
  
  
2014-08-23 - 8fc9bd0 - lavu 54.7.100 - dict.h  
  AV\_DICT\_DONT\_STRDUP\_KEY and AV\_DICT\_DONT\_STRDUP\_VAL arguments are now  
  freed even on error. This is consistent with the behaviour all users  
  of it we could find expect.  
  
  
2014-08-21 - 980a5b0 - lavu 54.6.100 - frame.h motion\_vector.h  
  Add AV\_FRAME\_DATA\_MOTION\_VECTORS side data and AVMotionVector structure  
  
  
2014-08-16 - b7d5e01 - lswr 1.1.100 - swresample.h  
  Add AVFrame based API  
  
  
2014-08-16 - c2829dc - lavu 54.4.100 - dict.h  
  Add av\_dict\_set\_int helper function.  
  
  
2014-08-13 - c8571c6 / 8ddc326 - lavu 54.3.100 / 54.3.0 - mem.h  
  Add av\_strndup().  
  
  
2014-08-13 - 2ba4577 / a8c104a - lavu 54.2.100 / 54.2.0 - opt.h  
  Add av\_opt\_get\_dict\_val/set\_dict\_val with AV\_OPT\_TYPE\_DICT to support  
  dictionary types being set as options.  
  
  
2014-08-13 - afbd4b8 - lavf 56.01.0 - avformat.h  
  Add AVFormatContext.event\_flags and AVStream.event\_flags for signaling to  
  the user when events happen in the file/stream.  
  
  
2014-08-10 - 78eaaa8 / fb1ddcd - lavr 2.1.0 - avresample.h  
  Add avresample\_convert\_frame() and avresample\_config().  
  
  
2014-08-10 - 78eaaa8 / fb1ddcd - lavu 54.1.100 / 54.1.0 - error.h  
  Add AVERROR\_INPUT\_CHANGED and AVERROR\_OUTPUT\_CHANGED.  
  
  
2014-08-08 - 3841f2a / d35b94f - lavc 55.73.102 / 55.57.4 - avcodec.h  
  Deprecate FF\_IDCT\_XVIDMMX define and xvidmmx idct option.  
  Replaced by FF\_IDCT\_XVID and xvid respectively.  
  
  
2014-08-08 - 5c3c671 - lavf 55.53.100 - avio.h  
  Add avio\_feof() and deprecate url\_feof().  
  
  
2014-08-07 - bb78903 - lsws 2.1.3 - swscale.h  
  sws\_getContext is not going to be removed in the future.  
  
  
2014-08-07 - a561662 / ad1ee5f - lavc 55.73.101 / 55.57.3 - avcodec.h  
  reordered\_opaque is not going to be removed in the future.  
  
  
2014-08-02 - 28a2107 - lavu 52.98.100 - pixelutils.h  
  Add pixelutils API with SAD functions  
  
  
2014-08-04 - 6017c98 / e9abafc - lavu 52.97.100 / 53.22.0 - pixfmt.h  
  Add AV\_PIX\_FMT\_YA16 pixel format for 16 bit packed gray with alpha.  
  
  
2014-08-04 - 4c8bc6f / e96c3b8 - lavu 52.96.101 / 53.21.1 - avstring.h  
  Rename AV\_PIX\_FMT\_Y400A to AV\_PIX\_FMT\_YA8 to better identify the format.  
  An alias pixel format and color space name are provided for compatibility.  
  
  
2014-08-04 - 073c074 / d2962e9 - lavu 52.96.100 / 53.21.0 - pixdesc.h  
  Support name aliases for pixel formats.  
  
  
2014-08-03 - 71d008e / 1ef9e83 - lavc 55.72.101 / 55.57.2 - avcodec.h  
2014-08-03 - 71d008e / 1ef9e83 - lavu 52.95.100 / 53.20.0 - frame.h  
  Deprecate AVCodecContext.dtg\_active\_format and use side-data instead.  
  
  
2014-08-03 - e680c73 - lavc 55.72.100 - avcodec.h  
  Add get\_pixels() to AVDCT  
  
  
2014-08-03 - 9400603 / 9f17685 - lavc 55.71.101 / 55.57.1 - avcodec.h  
  Deprecate unused FF\_IDCT\_IPP define and ipp avcodec option.  
  Deprecate unused FF\_DEBUG\_PTS define and pts avcodec option.  
  Deprecate unused FF\_CODER\_TYPE\_DEFLATE define and deflate avcodec option.  
  Deprecate unused FF\_DCT\_INT define and int avcodec option.  
  Deprecate unused avcodec option scenechange\_factor.  
  
  
2014-07-30 - ba3e331 - lavu 52.94.100 - frame.h  
  Add av\_frame\_side\_data\_name()  
  
  
2014-07-29 - 80a3a66 / 3a19405 - lavf 56.01.100 / 56.01.0 - avformat.h  
  Add mime\_type field to AVProbeData, which now MUST be initialized in  
  order to avoid uninitialized reads of the mime\_type pointer, likely  
  leading to crashes.  
  Typically, this means you will do 'AVProbeData pd = \{ 0 \};' instead of  
  'AVProbeData pd;'.  
  
  
2014-07-29 - 31e0b5d / 69e7336 - lavu 52.92.100 / 53.19.0 - avstring.h  
  Make name matching function from lavf public as av\_match\_name().  
  
  
2014-07-28 - 2e5c8b0 / c5fca01 - lavc 55.71.100 / 55.57.0 - avcodec.h  
  Add AV\_CODEC\_PROP\_REORDER to mark codecs supporting frame reordering.  
  
  
2014-07-27 - ff9a154 - lavf 55.50.100 - avformat.h  
  New field int64\_t probesize2 instead of deprecated  
  field int probesize.  
  
  
2014-07-27 - 932ff70 - lavc 55.70.100 - avdct.h  
  Add AVDCT / avcodec\_dct\_alloc() / avcodec\_dct\_init().  
  
  
2014-07-23 - 8a4c086 - lavf 55.49.100 - avio.h  
  Add avio\_read\_to\_bprint()  
  
  
  
  
\-------- 8< --------- FFmpeg 2.3 was cut here -------- 8< ---------  
  
  
2014-07-14 - 62227a7 - lavf 55.47.100 - avformat.h  
  Add av\_stream\_get\_parser()  
  
  
2014-07-09 - c67690f / a54f03b - lavu 52.92.100 / 53.18.0 - display.h  
  Add av\_display\_matrix\_flip() to flip the transformation matrix.  
  
  
2014-07-09 - 1b58f13 / f6ee61f - lavc 55.69.100 / 55.56.0 - dv\_profile.h  
  Add a public API for DV profile handling.  
  
  
2014-06-20 - 0dceefc / 9e500ef - lavu 52.90.100 / 53.17.0 - imgutils.h  
  Add av\_image\_check\_sar().  
  
  
2014-06-20 - 4a99333 / 874390e - lavc 55.68.100 / 55.55.0 - avcodec.h  
  Add av\_packet\_rescale\_ts() to simplify timestamp conversion.  
  
  
2014-06-18 - ac293b6 / 194be1f - lavf 55.44.100 / 55.20.0 - avformat.h  
  The proper way for providing a hint about the desired timebase to the muxers  
  is now setting AVStream.time\_base, instead of AVStream.codec.time\_base as was  
  done previously. The old method is now deprecated.  
  
  
2014-06-11 - 67d29da - lavc 55.66.101 - avcodec.h  
  Increase FF\_INPUT\_BUFFER\_PADDING\_SIZE to 32 due to some corner cases needing  
  it  
  
  
2014-06-10 - xxxxxxx - lavf 55.43.100 - avformat.h  
  New field int64\_t max\_analyze\_duration2 instead of deprecated  
  int max\_analyze\_duration.  
  
  
2014-05-30 - 00759d7 - lavu 52.89.100 - opt.h  
  Add av\_opt\_copy()  
  
  
2014-06-01 - 03bb99a / 0957b27 - lavc 55.66.100 / 55.54.0 - avcodec.h  
  Add AVCodecContext.side\_data\_only\_packets to allow encoders to output packets  
  with only side data. This option may become mandatory in the future, so all  
  users are recommended to update their code and enable this option.  
  
  
2014-06-01 - 6e8e9f1 / 8c02adc - lavu 52.88.100 / 53.16.0 - frame.h, pixfmt.h  
  Move all color-related enums (AVColorPrimaries, AVColorSpace, AVColorRange,  
  AVColorTransferCharacteristic, and AVChromaLocation) inside lavu.  
  And add AVFrame fields for them.  
  
  
2014-05-29 - bdb2e80 / b2d4565 - lavr 1.3.0 - avresample.h  
  Add avresample\_max\_output\_samples  
  
  
2014-05-28 - d858ee7 / 6d21259 - lavf 55.42.100 / 55.19.0 - avformat.h  
  Add strict\_std\_compliance and related AVOptions to support experimental  
  muxing.  
  
  
2014-05-26 - xxxxxxx - lavu 52.87.100 - threadmessage.h  
  Add thread message queue API.  
  
  
2014-05-26 - c37d179 - lavf 55.41.100 - avformat.h  
  Add format\_probesize to AVFormatContext.  
  
  
2014-05-20 - 7d25af1 / c23c96b - lavf 55.39.100 / 55.18.0 - avformat.h  
  Add av\_stream\_get\_side\_data() to access stream-level side data  
  in the same way as av\_packet\_get\_side\_data().  
  
  
2014-05-xx - xxxxxxx - lavu 52.86.100 - fifo.h  
  Add av\_fifo\_alloc\_array() function.  
  
  
2014-05-19 - ef1d4ee / bddd8cb - lavu 52.85.100 / 53.15.0 - frame.h, display.h  
  Add AV\_FRAME\_DATA\_DISPLAYMATRIX for exporting frame-level  
  spatial rendering on video frames for proper display.  
  
  
2014-05-19 - ef1d4ee / bddd8cb - lavc 55.64.100 / 55.53.0 - avcodec.h  
  Add AV\_PKT\_DATA\_DISPLAYMATRIX for exporting packet-level  
  spatial rendering on video frames for proper display.  
  
  
2014-05-19 - 999a99c / a312f71 - lavf 55.38.101 / 55.17.1 - avformat.h  
  Deprecate AVStream.pts and the AVFrac struct, which was its only use case.  
  See use av\_stream\_get\_end\_pts()  
  
  
2014-05-18 - 68c0518 / fd05602 - lavc 55.63.100 / 55.52.0 - avcodec.h  
  Add avcodec\_free\_context(). From now on it should be used for freeing  
  AVCodecContext.  
  
  
2014-05-17 - 0eec06e - lavu 52.84.100 - time.h  
  Add av\_gettime\_relative() av\_gettime\_relative\_is\_monotonic()  
  
  
2014-05-15 - eacf7d6 / 0c1959b - lavf 55.38.100 / 55.17.0 - avformat.h  
  Add AVFMT\_FLAG\_BITEXACT flag. Muxers now use it instead of checking  
  CODEC\_FLAG\_BITEXACT on the first stream.  
  
  
2014-05-15 - 96cb4c8 - lswr 0.19.100 - swresample.h  
  Add swr\_close()  
  
  
2014-05-11 - 14aef38 / 66e6c8a - lavu 52.83.100 / 53.14.0 - pixfmt.h  
  Add AV\_PIX\_FMT\_VDA for new-style VDA acceleration.  
  
  
2014-05-xx - xxxxxxx - lavu 52.82.0 - fifo.h  
  Add av\_fifo\_freep() function.  
  
  
2014-05-02 - ba52fb11 - lavu 52.81.0 - opt.h  
  Add av\_opt\_set\_dict2() function.  
  
  
2014-05-01 - e77b985 / a2941c8 - lavc 55.60.103 / 55.50.3 - avcodec.h  
  Deprecate CODEC\_FLAG\_MV0. It is replaced by the flag "mv0" in the  
  "mpv\_flags" private option of the mpegvideo encoders.  
  
  
2014-05-01 - e40ae8c / 6484149 - lavc 55.60.102 / 55.50.2 - avcodec.h  
  Deprecate CODEC\_FLAG\_GMC. It is replaced by the "gmc" private option of the  
  libxvid encoder.  
  
  
2014-05-01 - 1851643 / b2c3171 - lavc 55.60.101 / 55.50.1 - avcodec.h  
  Deprecate CODEC\_FLAG\_NORMALIZE\_AQP. It is replaced by the flag "naq" in the  
  "mpv\_flags" private option of the mpegvideo encoders.  
  
  
2014-05-01 - cac07d0 / 5fcceda - avcodec.h  
  Deprecate CODEC\_FLAG\_INPUT\_PRESERVED. Its functionality is replaced by passing  
  reference-counted frames to encoders.  
  
  
2014-04-29 - 1bf6396 - lavc 55.60.100 - avcodec.h  
  Add AVCodecDescriptor.mime\_types field.  
  
  
2014-04-29 - xxxxxxx - lavu 52.80.0 - hash.h  
  Add av\_hash\_final\_bin(), av\_hash\_final\_hex() and av\_hash\_final\_b64().  
  
  
2014-03-07 - 8b2a130 - lavc 55.50.0 / 55.53.100 - dxva2.h  
  Add FF\_DXVA2\_WORKAROUND\_INTEL\_CLEARVIDEO for old Intel GPUs.  
  
  
2014-04-22 - 502512e /dac7e8a - lavu 53.13.0 / 52.78.100 - avutil.h  
  Add av\_get\_time\_base\_q().  
  
  
2014-04-17 - a8d01a7 / 0983d48 - lavu 53.12.0 / 52.77.100 - crc.h  
  Add AV\_CRC\_16\_ANSI\_LE crc variant.  
  
  
2014-04-XX - xxxxxxx - lavf xx.xx.1xx - avformat.h  
  Add av\_format\_inject\_global\_side\_data()  
  
  
2014-04-12 - 4f698be - lavu 52.76.100 - log.h  
  Add av\_log\_get\_flags()  
  
  
2014-04-11 - 6db42a2b - lavd 55.12.100 - avdevice.h  
  Add avdevice\_capabilities\_create() function.  
  Add avdevice\_capabilities\_free() function.  
  
  
2014-04-07 - 0a1cc04 / 8b17243 - lavu 52.75.100 / 53.11.0 - pixfmt.h  
  Add AV\_PIX\_FMT\_YVYU422 pixel format.  
  
  
2014-04-04 - c1d0536 / 8542f9c - lavu 52.74.100 / 53.10.0 - replaygain.h  
  Full scale for peak values is now 100000 (instead of UINT32\_MAX) and values  
  may overflow.  
  
  
2014-04-03 - c16e006 / 7763118 - lavu 52.73.100 / 53.9.0 - log.h  
  Add AV\_LOG(c) macro to have 256 color debug messages.  
  
  
2014-04-03 - eaed4da9 - lavu 52.72.100 - opt.h  
  Add AV\_OPT\_MULTI\_COMPONENT\_RANGE define to allow return  
  multi-component option ranges.  
  
  
2014-03-29 - cd50a44b - lavu 52.70.100 - mem.h  
  Add av\_dynarray\_add\_nofree() function.  
  
  
2014-02-24 - 3e1f241 / d161ae0 - lavu 52.69.100 / 53.8.0 - frame.h  
  Add av\_frame\_remove\_side\_data() for removing a single side data  
  instance from a frame.  
  
  
2014-03-24 - 83e8978 / 5a7e35d - lavu 52.68.100 / 53.7.0 - frame.h, replaygain.h  
  Add AV\_FRAME\_DATA\_REPLAYGAIN for exporting replaygain tags.  
  Add a new header replaygain.h with the AVReplayGain struct.  
  
  
2014-03-24 - 83e8978 / 5a7e35d - lavc 55.54.100 / 55.36.0 - avcodec.h  
  Add AV\_PKT\_DATA\_REPLAYGAIN for exporting replaygain tags.  
  
  
2014-03-24 - 595ba3b / 25b3258 - lavf 55.35.100 / 55.13.0 - avformat.h  
  Add AVStream.side\_data and AVStream.nb\_side\_data for exporting stream-global  
  side data (e.g. replaygain tags, video rotation)  
  
  
2014-03-24 - bd34e26 / 0e2c3ee - lavc 55.53.100 / 55.35.0 - avcodec.h  
  Give the name AVPacketSideData to the previously anonymous struct used for  
  AVPacket.side\_data.  
  
  
  
  
\-------- 8< --------- FFmpeg 2.2 was cut here -------- 8< ---------  
  
  
2014-03-18 - 37c07d4 - lsws 2.5.102  
  Make gray16 full-scale.  
  
  
2014-03-16 - 6b1ca17 / 1481d24 - lavu 52.67.100 / 53.6.0 - pixfmt.h  
  Add RGBA64\_LIBAV pixel format and variants for compatibility  
  
  
2014-03-11 - 3f3229c - lavf 55.34.101 - avformat.h  
  Set AVFormatContext.start\_time\_realtime when demuxing.  
  
  
2014-03-03 - 06fed440 - lavd 55.11.100 - avdevice.h  
  Add av\_input\_audio\_device\_next().  
  Add av\_input\_video\_device\_next().  
  Add av\_output\_audio\_device\_next().  
  Add av\_output\_video\_device\_next().  
  
  
2014-02-24 - fff5262 / 1155fd0 - lavu 52.66.100 / 53.5.0 - frame.h  
  Add av\_frame\_copy() for copying the frame data.  
  
  
2014-02-24 - a66be60 - lswr 0.18.100 - swresample.h  
  Add swr\_is\_initialized() for checking whether a resample context is initialized.  
  
  
2014-02-22 - 5367c0b / 7e86c27 - lavr 1.2.0 - avresample.h  
  Add avresample\_is\_open() for checking whether a resample context is open.  
  
  
2014-02-19 - 6a24d77 / c3ecd96 - lavu 52.65.100 / 53.4.0  - opt.h  
  Add AV\_OPT\_FLAG\_EXPORT and AV\_OPT\_FLAG\_READONLY to mark options meant (only)  
  for reading.  
  
  
2014-02-19 - f4c8d00 / 6bb8720 - lavu 52.64.101 / 53.3.1 - opt.h  
  Deprecate unused AV\_OPT\_FLAG\_METADATA.  
  
  
2014-02-xx - xxxxxxx - lavd 55.10.100 - avdevice.h  
  Add avdevice\_list\_devices() and avdevice\_free\_list\_devices()  
  
  
2014-02-16 - db3c970 - lavf 55.33.100 - avio.h  
  Add avio\_find\_protocol\_name() to find out the name of the protocol that would  
  be selected for a given URL.  
  
  
2014-02-15 - a2bc6c1 / c98f316 - lavu 52.64.100 / 53.3.0 - frame.h  
  Add AV\_FRAME\_DATA\_DOWNMIX\_INFO value to the AVFrameSideDataType enum and  
  downmix\_info.h API, which identify downmix-related metadata.  
  
  
2014-02-11 - 1b05ac2 - lavf 55.32.100 - avformat.h  
  Add av\_write\_uncoded\_frame() and av\_interleaved\_write\_uncoded\_frame().  
  
  
2014-02-04 - 3adb5f8 / d9ae103 - lavf 55.30.100 / 55.11.0 - avformat.h  
  Add AVFormatContext.max\_interleave\_delta for controlling amount of buffering  
  when interleaving.  
  
  
2014-02-02 - 5871ee5 - lavf 55.29.100 - avformat.h  
  Add output\_ts\_offset muxing option to AVFormatContext.  
  
  
2014-01-27 - 102bd64 - lavd 55.7.100 - avdevice.h  
                       lavf 55.28.100 - avformat.h  
  Add avdevice\_dev\_to\_app\_control\_message() function.  
  
  
2014-01-27 - 7151411 - lavd 55.6.100 - avdevice.h  
                       lavf 55.27.100 - avformat.h  
  Add avdevice\_app\_to\_dev\_control\_message() function.  
  
  
2014-01-24 - 86bee79 - lavf 55.26.100 - avformat.h  
  Add AVFormatContext option metadata\_header\_padding to allow control over the  
  amount of padding added.  
  
  
2014-01-20 - eef74b2 / 93c553c - lavc 55.48.102 / 55.32.1 - avcodec.h  
  Edges are not required anymore on video buffers allocated by get\_buffer2()  
  (i.e. as if the CODEC\_FLAG\_EMU\_EDGE flag was always on). Deprecate  
  CODEC\_FLAG\_EMU\_EDGE and avcodec\_get\_edge\_width().  
  
  
2014-01-19 - 1a193c4 - lavf 55.25.100 - avformat.h  
  Add avformat\_get\_mov\_video\_tags() and avformat\_get\_mov\_audio\_tags().  
  
  
2014-01-19 - xxxxxxx - lavu 52.63.100 - rational.h  
  Add av\_make\_q() function.  
  
  
2014-01-05 - 4cf4da9 / 5b4797a - lavu 52.62.100 / 53.2.0 - frame.h  
  Add AV\_FRAME\_DATA\_MATRIXENCODING value to the AVFrameSideDataType enum, which  
  identifies AVMatrixEncoding data.  
  
  
2014-01-05 - 751385f / 5c437fb - lavu 52.61.100 / 53.1.0 - channel\_layout.h  
  Add values for various Dolby flags to the AVMatrixEncoding enum.  
  
  
2014-01-04 - b317f94 - lavu 52.60.100 - mathematics.h  
  Add av\_add\_stable() function.  
  
  
2013-12-22 - 911676c - lavu 52.59.100 - avstring.h  
  Add av\_strnlen() function.  
  
  
2013-12-09 - 64f73ac - lavu 52.57.100 - opencl.h  
  Add av\_opencl\_benchmark() function.  
  
  
2013-11-30 - 82b2e9c - lavu 52.56.100 - ffversion.h  
  Moves version.h to libavutil/ffversion.h.  
  Install ffversion.h and make it public.  
  
  
2013-12-11 - 29c83d2 / b9fb59d,409a143 / 9431356,44967ab / d7b3ee9 - lavc 55.45.101 / 55.28.1 - avcodec.h  
  av\_frame\_alloc(), av\_frame\_unref() and av\_frame\_free() now can and should be  
  used instead of avcodec\_alloc\_frame(), avcodec\_get\_frame\_defaults() and  
  avcodec\_free\_frame() respectively. The latter three functions are deprecated.  
  
  
2013-12-09 - 7a60348 / 7e244c6- - lavu 52.58.100 / 52.20.0 - frame.h  
  Add AV\_FRAME\_DATA\_STEREO3D value to the AVFrameSideDataType enum and  
  stereo3d.h API, that identify codec-independent stereo3d information.  
  
  
2013-11-26 - 625b290 / 1eaac1d- - lavu 52.55.100 / 52.19.0 - frame.h  
  Add AV\_FRAME\_DATA\_A53\_CC value to the AVFrameSideDataType enum, which  
  identifies ATSC A53 Part 4 Closed Captions data.  
  
  
2013-11-22 - 6859065 - lavu 52.54.100 - avstring.h  
  Add av\_utf8\_decode() function.  
  
  
2013-11-22 - fb7d70c - lavc 55.44.100 - avcodec.h  
  Add HEVC profiles  
  
  
2013-11-20 - c28b61c - lavc 55.44.100 - avcodec.h  
  Add av\_packet\_\{un,\}pack\_dictionary()  
  Add AV\_PKT\_METADATA\_UPDATE side data type, used to transmit key/value  
  strings between a stream and the application.  
  
  
2013-11-14 - 7c888ae / cce3e0a - lavu 52.53.100 / 52.18.0 - mem.h  
  Move av\_fast\_malloc() and av\_fast\_realloc() for libavcodec to libavutil.  
  
  
2013-11-14 - b71e4d8 / 8941971 - lavc 55.43.100 / 55.27.0 - avcodec.h  
  Deprecate AVCodecContext.error\_rate, it is replaced by the 'error\_rate'  
  private option of the mpegvideo encoder family.  
  
  
2013-11-14 - 31c09b7 / 728c465 - lavc 55.42.100 / 55.26.0 - vdpau.h  
  Add av\_vdpau\_get\_profile().  
  Add av\_vdpau\_alloc\_context(). This function must from now on be  
  used for allocating AVVDPAUContext.  
  
  
2013-11-04 - be41f21 / cd8f772 - lavc 55.41.100 / 55.25.0 - avcodec.h  
                       lavu 52.51.100 - frame.h  
  Add ITU-R BT.2020 and other not yet included values to color primaries,  
  transfer characteristics and colorspaces.  
  
  
2013-11-04 - 85cabf1 - lavu 52.50.100 - avutil.h  
  Add av\_fopen\_utf8()  
  
  
2013-10-31 - 78265fc / 28096e0 - lavu 52.49.100 / 52.17.0 - frame.h  
  Add AVFrame.flags and AV\_FRAME\_FLAG\_CORRUPT.  
  
  
  
  
\-------- 8< --------- FFmpeg 2.1 was cut here -------- 8< ---------  
  
  
2013-10-27 - dbe6f9f - lavc 55.39.100 - avcodec.h  
  Add CODEC\_CAP\_DELAY support to avcodec\_decode\_subtitle2.  
  
  
2013-10-27 - d61617a - lavu 52.48.100 - parseutils.h  
  Add av\_get\_known\_color\_name().  
  
  
2013-10-17 - 8696e51 - lavu 52.47.100 - opt.h  
  Add AV\_OPT\_TYPE\_CHANNEL\_LAYOUT and channel layout option handlers  
  av\_opt\_get\_channel\_layout() and av\_opt\_set\_channel\_layout().  
  
  
2013-10-06 - ccf96f8 -libswscale 2.5.101 - options.c  
  Change default scaler to bicubic  
  
  
2013-10-03 - e57dba0 - lavc 55.34.100 - avcodec.h  
  Add av\_codec\_get\_max\_lowres()  
  
  
2013-10-02 - 5082fcc - lavf 55.19.100 - avformat.h  
  Add audio/video/subtitle AVCodec fields to AVFormatContext to force specific  
  decoders  
  
  
2013-09-28 - 7381d31 / 0767bfd - lavfi 3.88.100 / 3.11.0 - avfilter.h  
  Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading  
  implementations.  
  
  
2013-09-21 - 85f8a3c / e208e6d - lavu 52.46.100 / 52.16.0 - pixfmt.h  
  Add interleaved 4:2:2 8/10-bit formats AV\_PIX\_FMT\_NV16 and  
  AV\_PIX\_FMT\_NV20.  
  
  
2013-09-16 - c74c3fb / 3feb3d6 - lavu 52.44.100 / 52.15.0 - mem.h  
  Add av\_reallocp.  
  
  
2013-09-04 - 3e1f507 - lavc 55.31.101 - avcodec.h  
  avcodec\_close() argument can be NULL.  
  
  
2013-09-04 - 36cd017a - lavf 55.16.101 - avformat.h  
  avformat\_close\_input() argument can be NULL and point on NULL.  
  
  
2013-08-29 - e31db62 - lavf 55.15.100 - avformat.h  
  Add av\_format\_get\_probe\_score().  
  
  
2013-08-15 - 1e0e193 - lsws 2.5.100 -  
  Add a sws\_dither AVOption, allowing to set the dither algorithm used  
  
  
2013-08-11 - d404fe35 - lavc 55.27.100 - vdpau.h  
  Add a render2 alternative to the render callback function.  
  
  
2013-08-11 - af05edc - lavc 55.26.100 - vdpau.h  
  Add allocation function for AVVDPAUContext, allowing  
  to extend it in the future without breaking ABI/API.  
  
  
2013-08-10 - 67a580f / 5a9a9d4 - lavc 55.25.100 / 55.16.0 - avcodec.h  
  Extend AVPacket API with av\_packet\_unref, av\_packet\_ref,  
  av\_packet\_move\_ref, av\_packet\_copy\_props, av\_packet\_free\_side\_data.  
  
  
2013-08-05 - 9547e3e / f824535 - lavc 55.22.100 / 55.13.0 - avcodec.h  
  Deprecate the bitstream-related members from struct AVVDPAUContext.  
  The bitstream buffers no longer need to be explicitly freed.  
  
  
2013-08-05 - 3b805dc / 549294f - lavc 55.21.100 / 55.12.0 - avcodec.h  
  Deprecate the CODEC\_CAP\_HWACCEL\_VDPAU codec capability. Use CODEC\_CAP\_HWACCEL  
  and select the AV\_PIX\_FMT\_VDPAU format with get\_format() instead.  
  
  
2013-08-05 - 4ee0984 / a0ad5d0 - lavu 52.41.100 / 52.14.0 - pixfmt.h  
  Deprecate AV\_PIX\_FMT\_VDPAU\_\*. Use AV\_PIX\_FMT\_VDPAU instead.  
  
  
2013-08-02 - 82fdfe8 / a8b1927 - lavc 55.20.100 / 55.11.0 - avcodec.h  
  Add output\_picture\_number to AVCodecParserContext.  
  
  
2013-07-23 - abc8110 - lavc 55.19.100 - avcodec.h  
  Add avcodec\_chroma\_pos\_to\_enum()  
  Add avcodec\_enum\_to\_chroma\_pos()  
  
  
  
  
\-------- 8< --------- FFmpeg 2.0 was cut here -------- 8< ---------  
  
  
2013-07-03 - 838bd73 - lavfi 3.78.100 - avfilter.h  
  Deprecate avfilter\_graph\_parse() in favor of the equivalent  
  avfilter\_graph\_parse\_ptr().  
  
  
2013-06-24 - af5f9c0 / 95d5246 - lavc 55.17.100 / 55.10.0 - avcodec.h  
  Add MPEG-2 AAC profiles  
  
  
2013-06-25 - af5f9c0 / 95d5246 - lavf 55.10.100 - avformat.h  
  Add AV\_DISPOSITION\_\* flags to indicate text track kind.  
  
  
2013-06-15 - 99b8cd0 - lavu 52.36.100  
  Add AVRIPEMD:  
   av\_ripemd\_alloc()  
   av\_ripemd\_init()  
   av\_ripemd\_update()  
   av\_ripemd\_final()  
  
  
2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h  
  Add av\_realloc\_array and av\_reallocp\_array  
  
  
2013-05-30 - 682b227 - lavu 52.35.100  
  Add AVSHA512:  
   av\_sha512\_alloc()  
   av\_sha512\_init()  
   av\_sha512\_update()  
   av\_sha512\_final()  
  
  
2013-05-24 - 8d4e969 / 129bb23 - lavfi 3.10.0 / 3.70.100 - avfilter.h  
  Add support for slice multithreading to lavfi. Filters supporting threading  
  are marked with AVFILTER\_FLAG\_SLICE\_THREADS.  
  New fields AVFilterContext.thread\_type, AVFilterGraph.thread\_type and  
  AVFilterGraph.nb\_threads (accessible directly or through AVOptions) may be  
  used to configure multithreading.  
  
  
2013-05-24 - fe40a9f / 2a6eaea - lavu 52.12.0 / 52.34.100 - cpu.h  
  Add av\_cpu\_count() function for getting the number of logical CPUs.  
  
  
2013-05-24 - 0c25c39 / b493847 - lavc 55.7.0 / 55.12.100 - avcodec.h  
  Add picture\_structure to AVCodecParserContext.  
  
  
2013-05-17 - 3a751ea - lavu 52.33.100 - opt.h  
  Add AV\_OPT\_TYPE\_COLOR value to AVOptionType enum.  
  
  
2013-05-13 - e398416 - lavu 52.31.100 - mem.h  
  Add av\_dynarray2\_add().  
  
  
2013-05-12 - 1776177 - lavfi 3.65.100  
  Add AVFILTER\_FLAG\_SUPPORT\_TIMELINE\* filter flags.  
  
  
2013-04-19 - 380cfce - lavc 55.4.100  
  Add AV\_CODEC\_PROP\_TEXT\_SUB property for text based subtitles codec.  
  
  
2013-04-18 - 7c1a002 - lavf 55.3.100  
  The matroska demuxer can now output proper verbatim ASS packets. It will  
  become the default starting lavf 56.0.100.  
  
  
2013-04-10 - af0d270 - lavu 25.26.100 - avutil.h,opt.h  
  Add av\_int\_list\_length()  
  and av\_opt\_set\_int\_list().  
  
  
2013-03-30 - 5c73645 - lavu 52.24.100 - samplefmt.h  
  Add av\_samples\_alloc\_array\_and\_samples().  
  
  
2013-03-29 - ef7b6b4 - lavf 55.1.100 - avformat.h  
  Add av\_guess\_frame\_rate()  
  
  
2013-03-20 - 8d928a9 - lavu 52.22.100 - opt.h  
  Add AV\_OPT\_TYPE\_DURATION value to AVOptionType enum.  
  
  
2013-03-17 - 7aa9af5 - lavu 52.20.100 - opt.h  
  Add AV\_OPT\_TYPE\_VIDEO\_RATE value to AVOptionType enum.  
  
  
  
  
\-------- 8< --------- FFmpeg 1.2 was cut here -------- 8< ---------  
  
  
2013-03-07 - 9767ec6 - lavu 52.18.100 - avstring.h,bprint.h  
  Add av\_escape() and av\_bprint\_escape() API.  
  
  
2013-02-24 - b59cd08 - lavfi 3.41.100 - buffersink.h  
  Add sample\_rates field to AVABufferSinkParams.  
  
  
2013-01-17 - a1a707f - lavf 54.61.100  
  Add av\_codec\_get\_tag2().  
  
  
2013-01-01 - 2eb2e17 - lavfi 3.34.100  
  Add avfilter\_get\_audio\_buffer\_ref\_from\_arrays\_channels.  
  
  
  
  
\-------- 8< --------- FFmpeg 1.1 was cut here -------- 8< ---------  
  
  
2012-12-20 - 34de47aa - lavfi 3.29.100 - avfilter.h  
  Add AVFilterLink.channels, avfilter\_link\_get\_channels()  
  and avfilter\_ref\_get\_channels().  
  
  
2012-12-15 - 96d815fc - lavc 54.80.100 - avcodec.h  
  Add pkt\_size field to AVFrame.  
  
  
2012-11-25 - c70ec631 - lavu 52.9.100 - opt.h  
  Add the following convenience functions to opt.h:  
   av\_opt\_get\_image\_size  
   av\_opt\_get\_pixel\_fmt  
   av\_opt\_get\_sample\_fmt  
   av\_opt\_set\_image\_size  
   av\_opt\_set\_pixel\_fmt  
   av\_opt\_set\_sample\_fmt  
  
  
2012-11-17 - 4cd74c81 - lavu 52.8.100 - bprint.h  
  Add av\_bprint\_strftime().  
  
  
2012-11-15 - 92648107 - lavu 52.7.100 - opt.h  
  Add av\_opt\_get\_key\_value().  
  
  
2012-11-13 - 79456652 - lavfi 3.23.100 - avfilter.h  
  Add channels field to AVFilterBufferRefAudioProps.  
  
  
2012-11-03 - 481fdeee - lavu 52.3.100 - opt.h  
  Add AV\_OPT\_TYPE\_SAMPLE\_FMT value to AVOptionType enum.  
  
  
2012-10-21 - 6fb2fd8 - lavc  54.68.100 - avcodec.h  
                       lavfi  3.20.100 - avfilter.h  
  Add AV\_PKT\_DATA\_STRINGS\_METADATA side data type, used to transmit key/value  
  strings between AVPacket and AVFrame, and add metadata field to  
  AVCodecContext (which shall not be accessed by users; see AVFrame metadata  
  instead).  
  
  
2012-09-27 - a70b493 - lavd 54.3.100 - version.h  
  Add LIBAVDEVICE\_IDENT symbol.  
  
  
2012-09-27 - a70b493 - lavfi 3.18.100 - version.h  
  Add LIBAVFILTER\_IDENT symbol.  
  
  
2012-09-27 - a70b493 - libswr 0.16.100 - version.h  
  Add LIBSWRESAMPLE\_VERSION, LIBSWRESAMPLE\_BUILD  
  and LIBSWRESAMPLE\_IDENT symbols.  
  
  
  
  
\-------- 8< --------- FFmpeg 1.0 was cut here -------- 8< ---------  
  
  
2012-09-06 - 29e972f - lavu 51.72.100 - parseutils.h  
  Add av\_small\_strptime() time parsing function.  
  
  
  Can be used as a stripped-down replacement for strptime(), on  
  systems which do not support it.  
  
  
2012-08-25 - 2626cc4 - lavf 54.28.100  
  Matroska demuxer now identifies SRT subtitles as AV\_CODEC\_ID\_SUBRIP instead  
  of AV\_CODEC\_ID\_TEXT.  
  
  
2012-08-13 - 5c0d8bc - lavfi 3.8.100 - avfilter.h  
  Add avfilter\_get\_class() function, and priv\_class field to AVFilter  
  struct.  
  
  
2012-08-12 - a25346e - lavu 51.69.100 - opt.h  
  Add AV\_OPT\_FLAG\_FILTERING\_PARAM symbol in opt.h.  
  
  
2012-07-31 - 23fc4dd - lavc 54.46.100  
  Add channels field to AVFrame.  
  
  
2012-07-30 - f893904 - lavu 51.66.100  
  Add av\_get\_channel\_description()  
  and av\_get\_standard\_channel\_layout() functions.  
  
  
2012-07-21 - 016a472 - lavc 54.43.100  
  Add decode\_error\_flags field to AVFrame.  
  
  
2012-07-20 - b062936 - lavf 54.18.100  
  Add avformat\_match\_stream\_specifier() function.  
  
  
2012-07-14 - f49ec1b - lavc 54.38.100 - avcodec.h  
  Add metadata to AVFrame, and the accessor functions  
  av\_frame\_get\_metadata() and av\_frame\_set\_metadata().  
  
  
2012-07-10 - 0e003d8 - lavc 54.33.100  
  Add av\_fast\_padded\_mallocz().  
  
  
2012-07-10 - 21d5609 - lavfi 3.2.0 - avfilter.h  
  Add init\_opaque() callback to AVFilter struct.  
  
  
2012-06-26 - e6674e4 - lavu 51.63.100 - imgutils.h  
  Add functions to libavutil/imgutils.h:  
  av\_image\_get\_buffer\_size()  
  av\_image\_fill\_arrays()  
  av\_image\_copy\_to\_buffer()  
  
  
2012-06-24 - c41899a - lavu 51.62.100 - version.h  
  version moved from avutil.h to version.h  
  
  
2012-04-11 - 359abb1 - lavu 51.58.100 - error.h  
  Add av\_make\_error\_string() and av\_err2str() utilities to  
  libavutil/error.h.  
  
  
2012-06-05 - 62b39d4 - lavc 54.24.100  
  Add pkt\_duration field to AVFrame.  
  
  
2012-05-24 - f2ee065 - lavu 51.54.100  
  Move AVPALETTE\_SIZE and AVPALETTE\_COUNT macros from  
  libavcodec/avcodec.h to libavutil/pixfmt.h.  
  
  
2012-05-14 - 94a9ac1 - lavf 54.5.100  
  Add av\_guess\_sample\_aspect\_ratio() function.  
  
  
2012-04-20 - 65fa7bc - lavfi 2.70.100  
  Add avfilter\_unref\_bufferp() to avfilter.h.  
  
  
2012-04-13 - 162e400 - lavfi 2.68.100  
  Install libavfilter/asrc\_abuffer.h public header.  
  
  
2012-03-26 - a67d9cf - lavfi 2.66.100  
  Add avfilter\_fill\_frame\_from\_\{audio\_,\}buffer\_ref() functions.  
  
  
2013-05-15 - ff46809 / e6c4ac7 - lavu 52.32.100 / 52.11.0 - pixdesc.h  
  Replace PIX\_FMT\_\* flags with AV\_PIX\_FMT\_FLAG\_\*.  
  
  
2013-04-03 - 6fc58a8 / 507b1e4 - lavc 55.7.100 / 55.4.0 - avcodec.h  
  Add field\_order to AVCodecParserContext.  
  
  
2013-04-19 - f4b05cd / 5e83d9a - lavc 55.5.100 / 55.2.0 - avcodec.h  
  Add CODEC\_FLAG\_UNALIGNED to allow decoders to produce unaligned output.  
  
  
2013-04-11 - lavfi 3.53.100 / 3.8.0  
  231fd44 / 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate  
            avfilterhraph.h, user applications should include just avfilter.h  
  86070b8 / bc1a985 - Add avfilter\_graph\_alloc\_filter(), deprecate avfilter\_open() and  
            avfilter\_graph\_add\_filter().  
  4fde705 / 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the  
            filter.  
  710b0aa / 48a5ada - Add avfilter\_init\_str(), deprecate avfilter\_init\_filter().  
  46de9ba / 1ba95a9 - Add avfilter\_init\_dict().  
  16fc24b / 7cdd737 - Add AVFilter.flags field and AVFILTER\_FLAG\_DYNAMIC\_\{INPUTS,OUTPUTS\} flags.  
  f4db6bf / 7e8fe4b - Add avfilter\_pad\_count() for counting filter inputs/outputs.  
  835cc0f / fa2a34c - Add avfilter\_next(), deprecate av\_filter\_next().  
            Deprecate avfilter\_uninit().  
  
  
2013-04-09 - lavfi 3.51.100 / 3.7.0 - avfilter.h  
  0594ef0 / b439c99 - Add AVFilter.priv\_class for exporting filter options through the  
            AVOptions API in the similar way private options work in lavc and lavf.  
  44d4488 / 8114c10 - Add avfilter\_get\_class().  
  Switch all filters to use AVOptions.  
  
  
2013-03-19 - 17ebef2 / 2c328a9 - lavu 52.20.100 / 52.9.0 - pixdesc.h  
  Add av\_pix\_fmt\_count\_planes() function for counting planes in a pixel format.  
  
  
2013-03-16 - ecade98 / 42c7c61 - lavfi 3.47.100 / 3.6.0  
  Add AVFilterGraph.nb\_filters, deprecate AVFilterGraph.filter\_count.  
  
  
2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.100 / 55.0.0, lavf 55.0.100 / 55.0.0,  
lavd 54.4.100 / 54.0.0, lavfi 3.5.0  
  36099df / 8e401db, 532f31a / 1cec062 - add a new API for reference counted buffers and buffer  
                     pools (new header libavutil/buffer.h).  
  2653e12 / 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.  
            Add av\_packet\_from\_data() function for constructing packets from  
            av\_malloc()ed data.  
  c4e8821 / 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add  
            AVFrame.buf/extended\_buf to allow reference counting for the AVFrame  
            data. Add new API for working with reference-counted AVFrames.  
  80e9e63 / 759001c - add the refcounted\_frames field to AVCodecContext to make audio and  
            video decoders return reference-counted frames. Add get\_buffer2()  
            callback to AVCodecContext which allocates reference-counted frames.  
            Add avcodec\_default\_get\_buffer2() as the default get\_buffer2()  
            implementation.  
            Deprecate AVCodecContext.get\_buffer() / release\_buffer() /  
            reget\_buffer(), avcodec\_default\_get\_buffer(),  
            avcodec\_default\_reget\_buffer(), avcodec\_default\_release\_buffer().  
            Remove avcodec\_default\_free\_buffers(), which should not have ever  
            been called from outside of lavc.  
            Deprecate the following AVFrame fields:  
                \* base -- is now stored in AVBufferRef  
                \* reference, type, buffer\_hints -- are unnecessary in the new API  
                \* hwaccel\_picture\_private, owner, thread\_opaque -- should not  
                  have been acessed from outside of lavc  
                \* qscale\_table, qstride, qscale\_type, mbskip\_table, motion\_val,  
                  mb\_type, dct\_coeff, ref\_index -- mpegvideo-specific tables,  
                  which are not exported anymore.  
  a05a44e / 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add  
            av\_buffersrc\_add\_frame(), deprecate av\_buffersrc\_buffer().  
            Add av\_buffersink\_get\_frame() and av\_buffersink\_get\_samples(),  
            deprecate av\_buffersink\_read() and av\_buffersink\_read\_samples().  
            Deprecate AVFilterBufferRef and all functions for working with it.  
  
  
2013-03-17 - 6c17ff8 / 12c5c1d - lavu 52.19.100 / 52.8.0 - avstring.h  
  Add av\_isdigit, av\_isgraph, av\_isspace, av\_isxdigit.  
  
  
2013-02-23 - 71cf094 / 9f12235 - lavfi 3.40.100 / 3.4.0 - avfiltergraph.h  
  Add resample\_lavr\_opts to AVFilterGraph for setting libavresample options  
  for auto-inserted resample filters.  
  
  
2013-01-25 - e7e14bc / 38c1466 - lavu 52.17.100 / 52.7.0 - dict.h  
  Add av\_dict\_parse\_string() to set multiple key/value pairs at once from a  
  string.  
  
  
2013-01-25 - 25be630 / b85a5e8 - lavu 52.16.100 / 52.6.0 - avstring.h  
  Add av\_strnstr()  
  
  
2013-01-15 - e7e0186 / 8ee288d - lavu 52.15.100 / 52.5.0 - hmac.h  
  Add AVHMAC.  
  
  
2013-01-13 - 8ee7b38 / 44e065d - lavc 54.87.100 / 54.36.0 - vdpau.h  
  Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.  
  
  
2013-01-12 - dae382b / 169fb94 - lavu 52.14.100 / 52.4.0 - pixdesc.h  
  Add AV\_PIX\_FMT\_VDPAU flag.  
  
  
2013-01-07 - 249fca3 / 074a00d - lavr 1.1.0  
  Add avresample\_set\_channel\_mapping() for input channel reordering,  
  duplication, and silencing.  
  
  
2012-12-29 - 2ce43b3 / d8fd06c - lavu 52.13.100 / 52.3.0 - avstring.h  
  Add av\_basename() and av\_dirname().  
  
  
2012-11-11 - 03b0787 / 5980f5d - lavu 52.6.100 / 52.2.0 - audioconvert.h  
  Rename audioconvert.h to channel\_layout.h. audioconvert.h is now deprecated.  
  
  
2012-11-05 - 7d26be6 / dfde8a3 - lavu 52.5.100 / 52.1.0 - intmath.h  
  Add av\_ctz() for trailing zero bit count  
  
  
2012-10-21 - e3a91c5 / a893655 - lavu 51.77.100 / 51.45.0 - error.h  
  Add AVERROR\_EXPERIMENTAL  
  
  
2012-10-12 - a33ed6b / d2fcb35 - lavu 51.76.100 / 51.44.0 - pixdesc.h  
  Add functions for accessing pixel format descriptors.  
  Accessing the av\_pix\_fmt\_descriptors array directly is now  
  deprecated.  
  
  
2012-10-11 - f391e40 / 9a92aea - lavu 51.75.100 / 51.43.0 - aes.h, md5.h, sha.h, tree.h  
  Add functions for allocating the opaque contexts for the algorithms,  
  
  
2012-10-10 - de31814 / b522000 - lavf 54.32.100 / 54.18.0 - avio.h  
  Add avio\_closep to complement avio\_close.  
  
  
2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h  
  Rename PixelFormat to AVPixelFormat and all PIX\_FMT\_\* to AV\_PIX\_FMT\_\*.  
  To provide backwards compatibility, PixelFormat is now \#defined as  
  AVPixelFormat.  
  Note that this can break user code that includes pixfmt.h and uses the  
  'PixelFormat' identifier. Such code should either \#undef PixelFormat  
  or stop using the PixelFormat name.  
  
  
2012-10-05 - 55c49af / e7ba5b1 - lavr 1.0.0 - avresample.h  
  Data planes parameters to avresample\_convert() and  
  avresample\_read() are now uint8\_t\*\* instead of void\*\*.  
  Libavresample is now stable.  
  
  
2012-09-26 - 3ba0dab7 / 1384df64 - lavf 54.29.101 / 56.06.3 - avformat.h  
  Add AVFormatContext.avoid\_negative\_ts.  
  
  
2012-09-24 - 46a3595 / a42aada - lavc 54.59.100 / 54.28.0 - avcodec.h  
  Add avcodec\_free\_frame(). This function must now  
  be used for freeing an AVFrame.  
  
  
2012-09-12 - e3e09f2 / 8919fee - lavu 51.73.100 / 51.41.0 - audioconvert.h  
  Added AV\_CH\_LOW\_FREQUENCY\_2 channel mask value.  
  
  
2012-09-04 - b21b5b0 / 686a329 - lavu 51.71.100 / 51.40.0 - opt.h  
  Reordered the fields in default\_val in AVOption, changed which  
  default\_val field is used for which AVOptionType.  
  
  
2012-08-30 - 98298eb / a231832 - lavc 54.54.101 / 54.26.1 - avcodec.h  
  Add codec descriptor properties AV\_CODEC\_PROP\_LOSSY and  
  AV\_CODEC\_PROP\_LOSSLESS.  
  
  
2012-08-18 - lavc 54.26 - avcodec.h  
  Add codec descriptors for accessing codec properties without having  
  to refer to a specific decoder or encoder.  
  
  
  f5f3684 / c223d79 - Add an AVCodecDescriptor struct and functions  
            avcodec\_descriptor\_get() and avcodec\_descriptor\_next().  
  f5f3684 / 51efed1 - Add AVCodecDescriptor.props and AV\_CODEC\_PROP\_INTRA\_ONLY.  
  6c180b3 / 91e59fe - Add avcodec\_descriptor\_get\_by\_name().  
  
  
2012-08-08 - f5f3684 / 987170c - lavu 51.68.100 / 51.38.0 - dict.h  
  Add av\_dict\_count().  
  
  
2012-08-07 - 7a72695 / 104e10f - lavc 54.51.100 / 54.25.0 - avcodec.h  
  Rename CodecID to AVCodecID and all CODEC\_ID\_\* to AV\_CODEC\_ID\_\*.  
  To provide backwards compatibility, CodecID is now \#defined as AVCodecID.  
  Note that this can break user code that includes avcodec.h and uses the  
  'CodecID' identifier. Such code should either \#undef CodecID or stop using the  
  CodecID name.  
  
  
2012-08-03 - e776ee8 / 239fdf1 - lavu 51.66.101 / 51.37.1 - cpu.h  
                       lsws 2.1.1   - swscale.h  
  Rename AV\_CPU\_FLAG\_MMX2  ---> AV\_CPU\_FLAG\_MMXEXT.  
  Rename SWS\_CPU\_CAPS\_MMX2 ---> SWS\_CPU\_CAPS\_MMXEXT.  
  
  
2012-07-29 - 7c26761 / 681ed00 - lavf 54.22.100 / 54.13.0 - avformat.h  
  Add AVFMT\_FLAG\_NOBUFFER for low latency use cases.  
  
  
2012-07-10 - fbe0245 / f3e5e6f - lavu 51.65.100 / 51.37.0  
  Add av\_malloc\_array() and av\_mallocz\_array()  
  
  
2012-06-22 - e847f41 / d3d3a32 - lavu 51.61.100 / 51.34.0  
  Add av\_usleep()  
  
  
2012-06-20 - 4da42eb / ae0a301 - lavu 51.60.100 / 51.33.0  
  Move av\_gettime() to libavutil, add libavutil/time.h  
  
  
2012-06-09 - 82edf67 / 3971be0 - lavr 0.0.3  
  Add a parameter to avresample\_build\_matrix() for Dolby/DPLII downmixing.  
  
  
2012-06-12 - c7b9eab / 9baeff9 - lavfi 2.79.100 / 2.23.0 - avfilter.h  
  Add AVFilterContext.nb\_inputs/outputs. Deprecate  
  AVFilterContext.input/output\_count.  
  
  
2012-06-12 - c7b9eab / 84b9fbe - lavfi 2.79.100 / 2.22.0 - avfilter.h  
  Add avfilter\_pad\_get\_type() and avfilter\_pad\_get\_name(). Those  
  should now be used instead of accessing AVFilterPad members  
  directly.  
  
  
2012-06-12 - 3630a07 / b0f0dfc - lavu 51.57.100 / 51.32.0 - audioconvert.h  
  Add av\_get\_channel\_layout\_channel\_index(), av\_get\_channel\_name()  
  and av\_channel\_layout\_extract\_channel().  
  
  
2012-05-25 - 53ce990 / 154486f - lavu 51.55.100 / 51.31.0 - opt.h  
  Add av\_opt\_set\_bin()  
  
  
2012-05-15 - lavfi 2.74.100 / 2.17.0  
  Add support for audio filters  
  61930bd / ac71230, 1cbf7fb / a2cd9be - add video/audio buffer sink in a new installed  
                    header buffersink.h  
  1cbf7fb / 720c6b7 - add av\_buffersrc\_write\_frame(), deprecate  
            av\_vsrc\_buffer\_add\_frame()  
  61930bd / ab16504 - add avfilter\_copy\_buf\_props()  
  61930bd / 9453c9e - add extended\_data to AVFilterBuffer  
  61930bd / 1b8c927 - add avfilter\_get\_audio\_buffer\_ref\_from\_arrays()  
  
  
2012-05-09 - lavu 51.53.100 / 51.30.0 - samplefmt.h  
  61930bd / 142e740 - add av\_samples\_copy()  
  61930bd / 6d7f617 - add av\_samples\_set\_silence()  
  
  
2012-05-09 - 61930bd / a5117a2 - lavc 54.21.101 / 54.13.1  
  For audio formats with fixed frame size, the last frame  
  no longer needs to be padded with silence, libavcodec  
  will handle this internally (effectively all encoders  
  behave as if they had CODEC\_CAP\_SMALL\_LAST\_FRAME set).  
  
  
2012-05-07 - 653d117 / 828bd08 - lavc 54.20.100 / 54.13.0 - avcodec.h  
  Add sample\_rate and channel\_layout fields to AVFrame.  
  
  
2012-05-01 - 2330eb1 / 4010d72 - lavr 0.0.1  
  Change AV\_MIX\_COEFF\_TYPE\_Q6 to AV\_MIX\_COEFF\_TYPE\_Q8.  
  
  
2012-04-25 - e890b68 / 3527a73 - lavu 51.48.100 / 51.29.0 - cpu.h  
  Add av\_parse\_cpu\_flags()  
  
  
2012-04-24 - 3ead79e / c8af852 - lavr 0.0.0  
  Add libavresample audio conversion library  
  
  
2012-04-20 - 3194ab7 / 0c0d1bc - lavu 51.47.100 / 51.28.0 - audio\_fifo.h  
  Add audio FIFO functions:  
    av\_audio\_fifo\_free()  
    av\_audio\_fifo\_alloc()  
    av\_audio\_fifo\_realloc()  
    av\_audio\_fifo\_write()  
    av\_audio\_fifo\_read()  
    av\_audio\_fifo\_drain()  
    av\_audio\_fifo\_reset()  
    av\_audio\_fifo\_size()  
    av\_audio\_fifo\_space()  
  
  
2012-04-14 - lavfi 2.70.100 / 2.16.0 - avfiltergraph.h  
  7432bcf / d7bcc71 Add avfilter\_graph\_parse2().  
  
  
2012-04-08 - 6bfb304 / 4d693b0 - lavu 51.46.100 / 51.27.0 - samplefmt.h  
  Add av\_get\_packed\_sample\_fmt() and av\_get\_planar\_sample\_fmt()  
  
  
2012-03-21 - b75c67d - lavu 51.43.100  
  Add bprint.h for bprint API.  
  
  
2012-02-21 - 9cbf17e - lavc 54.4.100  
  Add av\_get\_pcm\_codec() function.  
  
  
2012-02-16 - 560b224 - libswr 0.7.100  
  Add swr\_set\_matrix() function.  
  
  
2012-02-09 - c28e7af - lavu 51.39.100  
  Add a new installed header libavutil/timestamp.h with timestamp  
  utilities.  
  
  
2012-02-06 - 70ffda3 - lavu 51.38.100  
  Add av\_parse\_ratio() function to parseutils.h.  
  
  
2012-02-06 - 70ffda3 - lavu 51.38.100  
  Add AV\_LOG\_MAX\_OFFSET macro to log.h.  
  
  
2012-02-02 - 0eaa123 - lavu 51.37.100  
  Add public timecode helpers.  
  
  
2012-01-24 - 0c3577b - lavfi 2.60.100  
  Add avfilter\_graph\_dump.  
  
  
2012-03-20 - 0ebd836 / 3c90cc2 - lavfo 54.2.0  
  Deprecate av\_read\_packet(), use av\_read\_frame() with  
  AVFMT\_FLAG\_NOPARSE | AVFMT\_FLAG\_NOFILLIN in AVFormatContext.flags  
  
  
2012-03-05 - lavc 54.10.100 / 54.8.0  
  f095391 / 6699d07 Add av\_get\_exact\_bits\_per\_sample()  
  f095391 / 9524cf7 Add av\_get\_audio\_frame\_duration()  
  
  
2012-03-04 - 2af8f2c / 44fe77b - lavc 54.8.100 / 54.7.0 - avcodec.h  
  Add av\_codec\_is\_encoder/decoder().  
  
  
2012-03-01 - 1eb7f39 / 442c132 - lavc 54.5.100 / 54.3.0 - avcodec.h  
  Add av\_packet\_shrink\_side\_data.  
  
  
2012-02-29 - 79ae084 / dd2a4bc - lavf 54.2.100 / 54.2.0 - avformat.h  
  Add AVStream.attached\_pic and AV\_DISPOSITION\_ATTACHED\_PIC,  
  used for dealing with attached pictures/cover art.  
  
  
2012-02-25 - 305e4b3 / c9bca80 - lavu 51.41.100 / 51.24.0 - error.h  
  Add AVERROR\_UNKNOWN  
  NOTE: this was backported to 0.8  
  
  
2012-02-20 - eadd426 / e9cda85 - lavc 54.2.100 / 54.2.0  
  Add duration field to AVCodecParserContext  
  
  
2012-02-20 - eadd426 / 0b42a93 - lavu 51.40.100 / 51.23.1 - mathematics.h  
  Add av\_rescale\_q\_rnd()  
  
  
2012-02-08 - f2b20b7 / 38d5533 - lavu 51.38.101 / 51.22.1 - pixdesc.h  
  Add PIX\_FMT\_PSEUDOPAL flag.  
  
  
2012-02-08 - f2b20b7 / 52f82a1 - lavc 54.2.100 / 54.1.0  
  Add avcodec\_encode\_video2() and deprecate avcodec\_encode\_video().  
  
  
2012-02-01 - 4c677df / 316fc74 - lavc 54.1.0  
  Add av\_fast\_padded\_malloc() as alternative for av\_realloc() when aligned  
  memory is required. The buffer will always have FF\_INPUT\_BUFFER\_PADDING\_SIZE  
  zero-padded bytes at the end.  
  
  
2012-01-31 - a369a6b / dd6d3b0 - lavf 54.1.0  
  Add avformat\_get\_riff\_video\_tags() and avformat\_get\_riff\_audio\_tags().  
  NOTE: this was backported to 0.8  
  
  
2012-01-31 - a369a6b / af08d9a - lavc 54.1.0  
  Add avcodec\_is\_open() function.  
  NOTE: this was backported to 0.8  
  
  
2012-01-30 - 151ecc2 / 8b93312 - lavu 51.36.100 / 51.22.0 - intfloat.h  
  Add a new installed header libavutil/intfloat.h with int/float punning  
  functions.  
  NOTE: this was backported to 0.8  
  
  
2012-01-25 - lavf 53.31.100 / 53.22.0  
  3c5fe5b / f1caf01 Allow doing av\_write\_frame(ctx, NULL) for flushing possible  
          buffered data within a muxer. Added AVFMT\_ALLOW\_FLUSH for  
          muxers supporting it (av\_write\_frame makes sure it is called  
          only for muxers with this flag).  
  
  
2012-01-15 - lavc 53.56.105 / 53.34.0  
  New audio encoding API:  
  67f5650 / b2c75b6 Add CODEC\_CAP\_VARIABLE\_FRAME\_SIZE capability for use by audio  
          encoders.  
  67f5650 / 5ee5fa0 Add avcodec\_fill\_audio\_frame() as a convenience function.  
  67f5650 / b2c75b6 Add avcodec\_encode\_audio2() and deprecate avcodec\_encode\_audio().  
          Add AVCodec.encode2().  
  
  
2012-01-12 - b18e17e / 3167dc9 - lavfi 2.59.100 / 2.15.0  
  Add a new installed header -- libavfilter/version.h -- with version macros.  
  
  
  
  
\-------- 8< --------- FFmpeg 0.9 was cut here -------- 8< ---------  
  
  
2011-12-08 - a502939 - lavfi 2.52.0  
  Add av\_buffersink\_poll\_frame() to buffersink.h.  
  
  
2011-12-08 - 26c6fec - lavu 51.31.0  
  Add av\_log\_format\_line.  
  
  
2011-12-03 - 976b095 - lavu 51.30.0  
  Add AVERROR\_BUG.  
  
  
2011-11-24 - 573ffbb - lavu 51.28.1  
  Add av\_get\_alt\_sample\_fmt() to samplefmt.h.  
  
  
2011-11-03 - 96949da - lavu 51.23.0  
  Add av\_strcasecmp() and av\_strncasecmp() to avstring.h.  
  
  
2011-10-20 - b35e9e1 - lavu 51.22.0  
  Add av\_strtok() to avstring.h.  
  
  
2012-01-03 - ad1c8dd / b73ec05 - lavu 51.34.100 / 51.21.0  
  Add av\_popcount64  
  
  
2011-12-18 - 7c29313 / 8400b12 - lavc 53.46.1 / 53.28.1  
  Deprecate AVFrame.age. The field is unused.  
  
  
2011-12-12 - 8bc7fe4 / 5266045 - lavf 53.25.0 / 53.17.0  
  Add avformat\_close\_input().  
  Deprecate av\_close\_input\_file() and av\_close\_input\_stream().  
  
  
2011-12-09 - c59b80c / b2890f5 - lavu 51.32.0 / 51.20.0 - audioconvert.h  
  Expand the channel layout list.  
  
  
2011-12-02 - e4de716 / 0eea212 - lavc 53.40.0 / 53.25.0  
  Add nb\_samples and extended\_data fields to AVFrame.  
  Deprecate AVCODEC\_MAX\_AUDIO\_FRAME\_SIZE.  
  Deprecate avcodec\_decode\_audio3() in favor of avcodec\_decode\_audio4().  
  avcodec\_decode\_audio4() writes output samples to an AVFrame, which allows  
  audio decoders to use get\_buffer().  
  
  
2011-12-04 - e4de716 / 560f773 - lavc 53.40.0 / 53.24.0  
  Change AVFrame.data\[4\]/base\[4\]/linesize\[4\]/error\[4\] to \[8\] at next major bump.  
  Change AVPicture.data\[4\]/linesize\[4\] to \[8\] at next major bump.  
  Change AVCodecContext.error\[4\] to \[8\] at next major bump.  
  Add AV\_NUM\_DATA\_POINTERS to simplify the bump transition.  
  
  
2011-11-24 - lavu 51.29.0 / 51.19.0  
  92afb43 / bd97b2e - add planar RGB pixel formats  
  92afb43 / 6b0768e - add PIX\_FMT\_PLANAR and PIX\_FMT\_RGB pixel descriptions  
  
  
2011-11-23 - 8e576d5 / bbb46f3 - lavu 51.27.0 / 51.18.0  
  Add av\_samples\_get\_buffer\_size(), av\_samples\_fill\_arrays(), and  
  av\_samples\_alloc(), to samplefmt.h.  
  
  
2011-11-23 - 8e576d5 / 8889cc4 - lavu 51.27.0 / 51.17.0  
  Add planar sample formats and av\_sample\_fmt\_is\_planar() to samplefmt.h.  
  
  
2011-11-19 - dbb38bc / f3a29b7 - lavc 53.36.0 / 53.21.0  
  Move some AVCodecContext fields to a new private struct, AVCodecInternal,  
  which is accessed from a new field, AVCodecContext.internal.  
  - fields moved:  
      AVCodecContext.internal\_buffer       --> AVCodecInternal.buffer  
      AVCodecContext.internal\_buffer\_count --> AVCodecInternal.buffer\_count  
      AVCodecContext.is\_copy               --> AVCodecInternal.is\_copy  
  
  
2011-11-16 - 8709ba9 / 6270671 - lavu 51.26.0 / 51.16.0  
  Add av\_timegm()  
  
  
2011-11-13 - lavf 53.21.0 / 53.15.0  
  New interrupt callback API, allowing per-AVFormatContext/AVIOContext  
  interrupt callbacks.  
  5f268ca / 6aa0b98 Add AVIOInterruptCB struct and the interrupt\_callback field to  
          AVFormatContext.  
  5f268ca / 1dee0ac Add avio\_open2() with additional parameters. Those are  
          an interrupt callback and an options AVDictionary.  
          This will allow passing AVOptions to protocols after lavf  
          54.0.  
  
  
2011-11-06 - 13b7781 / ba04ecf - lavu 51.24.0 / 51.14.0  
  Add av\_strcasecmp() and av\_strncasecmp() to avstring.h.  
  
  
2011-11-06 - 13b7781 / 07b172f - lavu 51.24.0 / 51.13.0  
  Add av\_toupper()/av\_tolower()  
  
  
2011-11-05 - d8cab5c / b6d08f4 - lavf 53.19.0 / 53.13.0  
  Add avformat\_network\_init()/avformat\_network\_deinit()  
  
  
2011-10-27 - 6faf0a2 / 512557b - lavc 53.24.0 / 53.15.0  
  Remove avcodec\_parse\_frame.  
  Deprecate AVCodecContext.parse\_only and CODEC\_CAP\_PARSE\_ONLY.  
  
  
2011-10-19 - d049257 / 569129a - lavf 53.17.0 / 53.10.0  
  Add avformat\_new\_stream(). Deprecate av\_new\_stream().  
  
  
2011-10-13 - 91eb1b1 / b631fba - lavf 53.16.0 / 53.9.0  
  Add AVFMT\_NO\_BYTE\_SEEK AVInputFormat flag.  
  
  
2011-10-12 - lavu 51.21.0 / 51.12.0  
  AVOptions API rewrite.  
  
  
  - f884ef0 / 145f741 FF\_OPT\_TYPE\* renamed to AV\_OPT\_TYPE\_\*  
  - new setting/getting functions with slightly different semantics:  
        f884ef0 / dac66da av\_set\_string3 -> av\_opt\_set  
                av\_set\_double  -> av\_opt\_set\_double  
                av\_set\_q       -> av\_opt\_set\_q  
                av\_set\_int     -> av\_opt\_set\_int  
  
  
        f884ef0 / 41d9d51 av\_get\_string  -> av\_opt\_get  
                av\_get\_double  -> av\_opt\_get\_double  
                av\_get\_q       -> av\_opt\_get\_q  
                av\_get\_int     -> av\_opt\_get\_int  
  
  
  - f884ef0 / 8c5dcaa trivial rename av\_next\_option -> av\_opt\_next  
  - f884ef0 / 641c7af new functions - av\_opt\_child\_next, av\_opt\_child\_class\_next  
    and av\_opt\_find2()  
  
  
2011-09-22 - a70e787 - lavu 51.17.0  
  Add av\_x\_if\_null().  
  
  
2011-09-18 - 645cebb - lavc 53.16.0  
  Add showall flag2  
  
  
2011-09-16 - ea8de10 - lavfi 2.42.0  
  Add avfilter\_all\_channel\_layouts.  
  
  
2011-09-16 - 9899037 - lavfi 2.41.0  
  Rename avfilter\_all\_\* function names to avfilter\_make\_all\_\*.  
  
  
  In particular, apply the renames:  
  avfilter\_all\_formats         -> avfilter\_make\_all\_formats  
  avfilter\_all\_channel\_layouts -> avfilter\_make\_all\_channel\_layouts  
  avfilter\_all\_packing\_formats -> avfilter\_make\_all\_packing\_formats  
  
  
2011-09-12 - 4381bdd - lavfi 2.40.0  
  Change AVFilterBufferRefAudioProps.sample\_rate type from uint32\_t to int.  
  
  
2011-09-12 - 2c03174 - lavfi 2.40.0  
  Simplify signature for avfilter\_get\_audio\_buffer(), make it  
  consistent with avfilter\_get\_video\_buffer().  
  
  
2011-09-06 - 4f7dfe1 - lavfi 2.39.0  
  Rename libavfilter/vsink\_buffer.h to libavfilter/buffersink.h.  
  
  
2011-09-06 - c4415f6 - lavfi 2.38.0  
  Unify video and audio sink API.  
  
  
  In particular, add av\_buffersink\_get\_buffer\_ref(), deprecate  
  av\_vsink\_buffer\_get\_video\_buffer\_ref() and change the value for the  
  opaque field passed to the abuffersink init function.  
  
  
2011-09-04 - 61e2e29 - lavu 51.16.0  
  Add av\_asprintf().  
  
  
2011-08-22 - dacd827 - lavf 53.10.0  
  Add av\_find\_program\_from\_stream().  
  
  
2011-08-20 - 69e2c1a - lavu 51.13.0  
  Add av\_get\_media\_type\_string().  
  
  
2011-09-03 - 1889c67 / fb4ca26 - lavc 53.13.0  
                       lavf 53.11.0  
                       lsws  2.1.0  
  Add \{avcodec,avformat,sws\}\_get\_class().  
  
  
2011-08-03 - 1889c67 / c11fb82 - lavu 51.15.0  
  Add AV\_OPT\_SEARCH\_FAKE\_OBJ flag for av\_opt\_find() function.  
  
  
2011-08-14 - 323b930 - lavu 51.12.0  
  Add av\_fifo\_peek2(), deprecate av\_fifo\_peek().  
  
  
2011-08-26 - lavu 51.14.0 / 51.9.0  
  - 976a8b2 / add41de..976a8b2 / abc78a5 Do not include intfloat\_readwrite.h,  
    mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.  
  
  
2011-08-16 - 27fbe31 / 48f9e45 - lavf 53.11.0 / 53.8.0  
  Add avformat\_query\_codec().  
  
  
2011-08-16 - 27fbe31 / bca06e7 - lavc 53.11.0  
  Add avcodec\_get\_type().  
  
  
2011-08-06 - 0cb233c / 2f63440 - lavf 53.7.0  
  Add error\_recognition to AVFormatContext.  
  
  
2011-08-02 - 1d186e9 / 9d39cbf - lavc 53.9.1  
  Add AV\_PKT\_FLAG\_CORRUPT AVPacket flag.  
  
  
2011-07-16 - b57df29 - lavfi 2.27.0  
  Add audio packing negotiation fields and helper functions.  
  
  
  In particular, add AVFilterPacking enum, planar, in\_packings and  
  out\_packings fields to AVFilterLink, and the functions:  
  avfilter\_set\_common\_packing\_formats()  
  avfilter\_all\_packing\_formats()  
  
  
2011-07-10 - 3602ad7 / a67c061 - lavf 53.6.0  
  Add avformat\_find\_stream\_info(), deprecate av\_find\_stream\_info().  
  NOTE: this was backported to 0.7  
  
  
2011-07-10 - 3602ad7 / 0b950fe - lavc 53.8.0  
  Add avcodec\_open2(), deprecate avcodec\_open().  
  NOTE: this was backported to 0.7  
  
  
  Add avcodec\_alloc\_context3. Deprecate avcodec\_alloc\_context() and  
  avcodec\_alloc\_context2().  
  
  
2011-07-01 - b442ca6 - lavf 53.5.0 - avformat.h  
  Add function av\_get\_output\_timestamp().  
  
  
2011-06-28 - 5129336 - lavu 51.11.0 - avutil.h  
  Define the AV\_PICTURE\_TYPE\_NONE value in AVPictureType enum.  
  
  
  
  
\-------- 8< --------- FFmpeg 0.7 was cut here -------- 8< ---------  
  
  
  
  
  
  
\-------- 8< --------- FFmpeg 0.8 was cut here -------- 8< ---------  
  
  
2011-06-19 - fd2c0a5 - lavfi 2.23.0 - avfilter.h  
  Add layout negotiation fields and helper functions.  
  
  
  In particular, add in\_chlayouts and out\_chlayouts to AVFilterLink,  
  and the functions:  
  avfilter\_set\_common\_sample\_formats()  
  avfilter\_set\_common\_channel\_layouts()  
  avfilter\_all\_channel\_layouts()  
  
  
2011-06-19 - 527ca39 - lavfi 2.22.0 - AVFilterFormats  
  Change type of AVFilterFormats.formats from int \* to int64\_t \*,  
  and update formats handling API accordingly.  
  
  
  avfilter\_make\_format\_list() still takes a int32\_t array and converts  
  it to int64\_t. A new function, avfilter\_make\_format64\_list(), that  
  takes int64\_t arrays has been added.  
  
  
2011-06-19 - 44f669e - lavfi 2.21.0 - vsink\_buffer.h  
  Add video sink buffer and vsink\_buffer.h public header.  
  
  
2011-06-12 - 9fdf772 - lavfi 2.18.0 - avcodec.h  
  Add avfilter\_get\_video\_buffer\_ref\_from\_frame() function in  
  libavfilter/avcodec.h.  
  
  
2011-06-12 - c535494 - lavfi 2.17.0 - avfiltergraph.h  
  Add avfilter\_inout\_alloc() and avfilter\_inout\_free() functions.  
  
  
2011-06-12 - 6119b23 - lavfi 2.16.0 - avfilter\_graph\_parse()  
  Change avfilter\_graph\_parse() signature.  
  
  
2011-06-23 - 686959e / 67e9ae1 - lavu 51.10.0 / 51.8.0 - attributes.h  
  Add av\_printf\_format().  
  
  
2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53.4.0 / 53.2.0 - avformat.h  
  Add avformat\_open\_input and avformat\_write\_header().  
  Deprecate av\_open\_input\_stream, av\_open\_input\_file,  
  AVFormatParameters and av\_write\_header.  
  
  
2011-06-16 - 2905e3f / 7e83e1c, 2905e3f / dc59ec5 - lavu 51.9.0 / 51.7.0 - opt.h  
  Add av\_opt\_set\_dict() and av\_opt\_find().  
  Deprecate av\_find\_opt().  
  Add AV\_DICT\_APPEND flag.  
  
  
2011-06-10 - 45fb647 / cb7c11c - lavu 51.6.0 - opt.h  
  Add av\_opt\_flag\_is\_set().  
  
  
2011-06-10 - c381960 - lavfi 2.15.0 - avfilter\_get\_audio\_buffer\_ref\_from\_arrays  
  Add avfilter\_get\_audio\_buffer\_ref\_from\_arrays() to avfilter.h.  
  
  
2011-06-09 - f9ecb84 / d9f80ea - lavu 51.8.0 - AVMetadata  
  Move AVMetadata from lavf to lavu and rename it to  
  AVDictionary -- new installed header dict.h.  
  All av\_metadata\_\* functions renamed to av\_dict\_\*.  
  
  
2011-06-07 - d552f61 / a6703fa - lavu 51.8.0 - av\_get\_bytes\_per\_sample()  
  Add av\_get\_bytes\_per\_sample() in libavutil/samplefmt.h.  
  Deprecate av\_get\_bits\_per\_sample\_fmt().  
  
  
2011-06-05 - f956924 / b39b062 - lavu 51.8.0 - opt.h  
  Add av\_opt\_free convenience function.  
  
  
2011-06-06 - 95a0242 - lavfi 2.14.0 - AVFilterBufferRefAudioProps  
  Remove AVFilterBufferRefAudioProps.size, and use nb\_samples in  
  avfilter\_get\_audio\_buffer() and avfilter\_default\_get\_audio\_buffer() in  
  place of size.  
  
  
2011-06-06 - 0bc2cca - lavu 51.6.0 - av\_samples\_alloc()  
  Switch nb\_channels and nb\_samples parameters order in  
  av\_samples\_alloc().  
  
  
2011-06-06 - e1c7414 - lavu 51.5.0 - av\_samples\_\*  
  Change the data layout created by av\_samples\_fill\_arrays() and  
  av\_samples\_alloc().  
  
  
2011-06-06 - 27bcf55 - lavfi 2.13.0 - vsrc\_buffer.h  
  Make av\_vsrc\_buffer\_add\_video\_buffer\_ref() accepts an additional  
  flags parameter in input.  
  
  
2011-06-03 - e977ca2 - lavfi 2.12.0 - avfilter\_link\_free()  
  Add avfilter\_link\_free() function.  
  
  
2011-06-02 - 5ad38d9 - lavu 51.4.0 - av\_force\_cpu\_flags()  
  Add av\_cpu\_flags() in libavutil/cpu.h.  
  
  
2011-05-28 - e71f260 - lavu 51.3.0 - pixdesc.h  
  Add av\_get\_pix\_fmt\_name() in libavutil/pixdesc.h, and deprecate  
  avcodec\_get\_pix\_fmt\_name() in libavcodec/avcodec.h in its favor.  
  
  
2011-05-25 - 39e4206 / 30315a8 - lavf 53.3.0 - avformat.h  
  Add fps\_probe\_size to AVFormatContext.  
  
  
2011-05-22 - 5ecdfd0 - lavf 53.2.0 - avformat.h  
  Introduce avformat\_alloc\_output\_context2() and deprecate  
  avformat\_alloc\_output\_context().  
  
  
2011-05-22 - 83db719 - lavfi 2.10.0 - vsrc\_buffer.h  
  Make libavfilter/vsrc\_buffer.h public.  
  
  
2011-05-19 - c000a9f - lavfi 2.8.0 - avcodec.h  
  Add av\_vsrc\_buffer\_add\_frame() to libavfilter/avcodec.h.  
  
  
2011-05-14 - 9fdf772 - lavfi 2.6.0 - avcodec.h  
  Add avfilter\_get\_video\_buffer\_ref\_from\_frame() to libavfilter/avcodec.h.  
  
  
2011-05-18 - 75a37b5 / 64150ff - lavc 53.7.0 - AVCodecContext.request\_sample\_fmt  
  Add request\_sample\_fmt field to AVCodecContext.  
  
  
2011-05-10 - 59eb12f / 188dea1 - lavc 53.6.0 - avcodec.h  
  Deprecate AVLPCType and the following fields in  
  AVCodecContext: lpc\_coeff\_precision, prediction\_order\_method,  
  min\_partition\_order, max\_partition\_order, lpc\_type, lpc\_passes.  
  Corresponding FLAC encoder options should be used instead.  
  
  
2011-05-07 - 9fdf772 - lavfi 2.5.0 - avcodec.h  
  Add libavfilter/avcodec.h header and avfilter\_copy\_frame\_props()  
  function.  
  
  
2011-05-07 - 18ded93 - lavc 53.5.0 - AVFrame  
  Add format field to AVFrame.  
  
  
2011-05-07 - 22333a6 - lavc 53.4.0 - AVFrame  
  Add width and height fields to AVFrame.  
  
  
2011-05-01 - 35fe66a - lavfi 2.4.0 - avfilter.h  
  Rename AVFilterBufferRefVideoProps.pixel\_aspect to  
  sample\_aspect\_ratio.  
  
  
2011-05-01 - 77e9dee - lavc 53.3.0 - AVFrame  
  Add a sample\_aspect\_ratio field to AVFrame.  
  
  
2011-05-01 - 1ba5727 - lavc 53.2.0 - AVFrame  
  Add a pkt\_pos field to AVFrame.  
  
  
2011-04-29 - 35ceaa7 - lavu 51.2.0 - mem.h  
  Add av\_dynarray\_add function for adding  
  an element to a dynamic array.  
  
  
2011-04-26 - d7e5aeb / bebe72f - lavu 51.1.0 - avutil.h  
  Add AVPictureType enum and av\_get\_picture\_type\_char(), deprecate  
  FF\_\*\_TYPE defines and av\_get\_pict\_type\_char() defined in  
  libavcodec/avcodec.h.  
  
  
2011-04-26 - d7e5aeb / 10d3940 - lavfi 2.3.0 - avfilter.h  
  Add pict\_type and key\_frame fields to AVFilterBufferRefVideo.  
  
  
2011-04-26 - d7e5aeb / 7a11c82 - lavfi 2.2.0 - vsrc\_buffer  
  Add sample\_aspect\_ratio fields to vsrc\_buffer arguments  
  
  
2011-04-21 - 8772156 / 94f7451 - lavc 53.1.0 - avcodec.h  
  Add CODEC\_CAP\_SLICE\_THREADS for codecs supporting sliced threading.  
  
  
2011-04-15 - lavc 52.120.0 - avcodec.h  
  AVPacket structure got additional members for passing side information:  
    c407984 / 4de339e introduce side information for AVPacket  
    c407984 / 2d8591c make containers pass palette change in AVPacket  
  
  
2011-04-12 - lavf 52.107.0 - avio.h  
  Avio cleanup, part II - deprecate the entire URLContext API:  
    c55780d / 175389c add avio\_check as a replacement for url\_exist  
    9891004 / ff1ec0c add avio\_pause and avio\_seek\_time as replacements  
            for \_av\_url\_read\_fseek/fpause  
    d4d0932 / cdc6a87 deprecate av\_protocol\_next(), avio\_enum\_protocols  
            should be used instead.  
    c88caa5 / 80c6e23 rename url\_set\_interrupt\_cb->avio\_set\_interrupt\_cb.  
    c88caa5 / f87b1b3 rename open flags: URL\_\* -> AVIO\_\*  
    d4d0932 / f8270bb add avio\_enum\_protocols.  
    d4d0932 / 5593f03 deprecate URLProtocol.  
    d4d0932 / c486dad deprecate URLContext.  
    d4d0932 / 026e175 deprecate the typedef for URLInterruptCB  
    c88caa5 / 8e76a19 deprecate av\_register\_protocol2.  
    11d7841 / b840484 deprecate URL\_PROTOCOL\_FLAG\_NESTED\_SCHEME  
    11d7841 / 1305d93 deprecate av\_url\_read\_seek  
    11d7841 / fa104e1 deprecate av\_url\_read\_pause  
    434f248 / 727c7aa deprecate url\_get\_filename().  
    434f248 / 5958df3 deprecate url\_max\_packet\_size().  
    434f248 / 1869ea0 deprecate url\_get\_file\_handle().  
    434f248 / 32a97d4 deprecate url\_filesize().  
    434f248 / e52a914 deprecate url\_close().  
    434f248 / 58a48c6 deprecate url\_seek().  
    434f248 / 925e908 deprecate url\_write().  
    434f248 / dce3756 deprecate url\_read\_complete().  
    434f248 / bc371ac deprecate url\_read().  
    434f248 / 0589da0 deprecate url\_open().  
    434f248 / 62eaaea deprecate url\_connect.  
    434f248 / 5652bb9 deprecate url\_alloc.  
    434f248 / 333e894 deprecate url\_open\_protocol  
    434f248 / e230705 deprecate url\_poll and URLPollEntry  
  
  
2011-04-08 - lavf 52.106.0 - avformat.h  
  Minor avformat.h cleanup:  
    d4d0932 / a9bf9d8 deprecate av\_guess\_image2\_codec  
    d4d0932 / c3675df rename avf\_sdp\_create->av\_sdp\_create  
  
  
2011-04-03 - lavf 52.105.0 - avio.h  
  Large-scale renaming/deprecating of AVIOContext-related functions:  
    2cae980 / 724f6a0 deprecate url\_fdopen  
    2cae980 / 403ee83 deprecate url\_open\_dyn\_packet\_buf  
    2cae980 / 6dc7d80 rename url\_close\_dyn\_buf       -> avio\_close\_dyn\_buf  
    2cae980 / b92c545 rename url\_open\_dyn\_buf        -> avio\_open\_dyn\_buf  
    2cae980 / 8978fed introduce an AVIOContext.seekable field as a replacement for  
            AVIOContext.is\_streamed and url\_is\_streamed()  
    1caa412 / b64030f deprecate get\_checksum()  
    1caa412 / 4c4427a deprecate init\_checksum()  
    2fd41c9 / 4ec153b deprecate udp\_set\_remote\_url/get\_local\_port  
    4fa0e24 / 933e90a deprecate av\_url\_read\_fseek/fpause  
    4fa0e24 / 8d9769a deprecate url\_fileno  
    0fecf26 / b7f2fdd rename put\_flush\_packet -> avio\_flush  
    0fecf26 / 35f1023 deprecate url\_close\_buf  
    0fecf26 / 83fddae deprecate url\_open\_buf  
    0fecf26 / d9d86e0 rename url\_fprintf -> avio\_printf  
    0fecf26 / 59f65d9 deprecate url\_setbufsize  
    6947b0c / 3e68b3b deprecate url\_ferror  
    e8bb2e2 deprecate url\_fget\_max\_packet\_size  
    76aa876 rename url\_fsize -> avio\_size  
    e519753 deprecate url\_fgetc  
    655e45e deprecate url\_fgets  
    a2704c9 rename url\_ftell -> avio\_tell  
    e16ead0 deprecate get\_strz() in favor of avio\_get\_str  
    0300db8,2af07d3 rename url\_fskip -> avio\_skip  
    6b4aa5d rename url\_fseek -> avio\_seek  
    61840b4 deprecate put\_tag  
    22a3212 rename url\_fopen/fclose -> avio\_open/close.  
    0ac8e2b deprecate put\_nbyte  
    77eb550 rename put\_byte          -> avio\_w8  
                   put\_\[b/l\]e<type>  -> avio\_w\[b/l\]<type>  
                   put\_buffer        -> avio\_write  
    b7effd4 rename get\_byte          -> avio\_r8,  
                   get\_\[b/l\]e<type>  -> avio\_r\[b/l\]<type>  
                   get\_buffer        -> avio\_read  
    b3db9ce deprecate get\_partial\_buffer  
    8d9ac96 rename av\_alloc\_put\_byte -> avio\_alloc\_context  
  
  
2011-03-25 - 27ef7b1 / 34b47d7 - lavc 52.115.0 - AVCodecContext.audio\_service\_type  
  Add audio\_service\_type field to AVCodecContext.  
  
  
2011-03-17 - e309fdc - lavu 50.40.0 - pixfmt.h  
  Add PIX\_FMT\_BGR48LE and PIX\_FMT\_BGR48BE pixel formats  
  
  
2011-03-02 - 863c471 - lavf  52.103.0 - av\_pkt\_dump2, av\_pkt\_dump\_log2  
  Add new functions av\_pkt\_dump2, av\_pkt\_dump\_log2 that uses the  
  source stream timebase for outputting timestamps. Deprecate  
  av\_pkt\_dump and av\_pkt\_dump\_log.  
  
  
2011-02-20 - e731b8d - lavf  52.102.0 - avio.h  
  \* e731b8d - rename init\_put\_byte() to ffio\_init\_context(), deprecating the  
              original, and move it to a private header so it is no longer  
              part of our public API. Instead, use av\_alloc\_put\_byte().  
  \* ae628ec - rename ByteIOContext to AVIOContext.  
  
  
2011-02-16 - 09d171b - lavf  52.101.0 - avformat.h  
                       lavu  52.39.0  - parseutils.h  
  \* 610219a - Add av\_ prefix to dump\_format().  
  \* f6c7375 - Replace parse\_date() in lavf with av\_parse\_time() in lavu.  
  \* ab0287f - Move find\_info\_tag from lavf to lavu and add av\_prefix to it.  
  
  
2011-02-15 - lavu 52.38.0 - merge libavcore  
  libavcore is merged back completely into libavutil  
  
  
2011-02-10 - 55bad0c - lavc 52.113.0 - vbv\_delay  
  Add vbv\_delay field to AVCodecContext  
  
  
2011-02-14 - 24a83bd - lavf 52.100.0 - AV\_DISPOSITION\_CLEAN\_EFFECTS  
  Add AV\_DISPOSITION\_CLEAN\_EFFECTS disposition flag.  
  
  
2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample\_aspect\_ratio  
  Add sample\_aspect\_ratio field to AVFilterLink.  
  
  
2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition  
  Add AV\_DISPOSITION\_HEARING\_IMPAIRED and AV\_DISPOSITION\_VISUAL\_IMPAIRED.  
  
  
2011-02-09 - c0b102c - lavc 52.112.0 - avcodec\_thread\_init()  
  Deprecate avcodec\_thread\_init()/avcodec\_thread\_free() use; instead  
  set thread\_count before calling avcodec\_open.  
  
  
2011-02-09 - 37b00b4 - lavc 52.111.0 - threading API  
  Add CODEC\_CAP\_FRAME\_THREADS with new restrictions on get\_buffer()/  
  release\_buffer()/draw\_horiz\_band() callbacks for appropriate codecs.  
  Add thread\_type and active\_thread\_type fields to AVCodecContext.  
  
  
2011-02-08 - 3940caa - lavf 52.98.0 - av\_probe\_input\_buffer  
  Add av\_probe\_input\_buffer() to avformat.h for probing format from a  
  ByteIOContext.  
  
  
2011-02-06 - fe174fc - lavf 52.97.0 - avio.h  
  Add flag for non-blocking protocols: URL\_FLAG\_NONBLOCK  
  
  
2011-02-04 - f124b08 - lavf 52.96.0 - avformat\_free\_context()  
  Add avformat\_free\_context() in avformat.h.  
  
  
2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC\_ID\_PRORES  
  Add CODEC\_ID\_PRORES to avcodec.h.  
  
  
2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines  
  Add defines for H.264 \* Constrained Baseline and Intra profiles  
  
  
2011-02-02 - lavf 52.95.0  
  \* 50196a9 - add a new installed header version.h.  
  \* 4efd5cf, dccbd97, 93b78d1 - add several variants of public  
    avio\_\{put,get\}\_str\* functions.  Deprecate corresponding semi-public  
    \{put,get\}\_str\*.  
  
  
2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h  
  Make av\_dlog public.  
  
  
2011-01-31 - 7b3ea55 - lavfi 1.76.0 - vsrc\_buffer  
  Add sample\_aspect\_ratio fields to vsrc\_buffer arguments  
  
  
2011-01-31 - 910b5b8 - lavfi 1.75.0 - AVFilterLink sample\_aspect\_ratio  
  Add sample\_aspect\_ratio field to AVFilterLink.  
  
  
2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps  
  Rename AVFilterBufferRefAudioProps.samples\_nb to nb\_samples.  
  
  
2011-01-14 - 7f88a5b - lavf 52.93.0 - av\_metadata\_copy()  
  Add av\_metadata\_copy() in avformat.h.  
  
  
2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered\_opaque  
  Deprecate reordered\_opaque in favor of pkt\_pts/dts.  
  
  
2011-01-07 - 1919fea - lavc 52.106.0 - pkt\_dts  
  Add pkt\_dts to AVFrame, this will in the future allow multithreading decoders  
  to not mess up dts.  
  
  
2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt\_pts  
  Add pkt\_pts to AVFrame.  
  
  
2011-01-07 - 060ec0a - lavc 52.104.0 - av\_get\_profile\_name()  
  Add av\_get\_profile\_name to libavcodec/avcodec.h.  
  
  
2010-12-27 - 0ccabee - lavfi 1.71.0 - AV\_PERM\_NEG\_LINESIZES  
  Add AV\_PERM\_NEG\_LINESIZES in avfilter.h.  
  
  
2010-12-27 - 9128ae0 - lavf 52.91.0 - av\_find\_best\_stream()  
  Add av\_find\_best\_stream to libavformat/avformat.h.  
  
  
2010-12-27 - 107a7e3 - lavf 52.90.0  
  Add AVFMT\_NOSTREAMS flag for formats with no streams,  
  like e.g. text metadata.  
  
  
2010-12-22 - 0328b9e - lavu 50.36.0 - file.h  
  Add functions av\_file\_map() and av\_file\_unmap() in file.h.  
  
  
2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h  
  Add "not found" error codes:  
  AVERROR\_DEMUXER\_NOT\_FOUND  
  AVERROR\_MUXER\_NOT\_FOUND  
  AVERROR\_DECODER\_NOT\_FOUND  
  AVERROR\_ENCODER\_NOT\_FOUND  
  AVERROR\_PROTOCOL\_NOT\_FOUND  
  AVERROR\_FILTER\_NOT\_FOUND  
  AVERROR\_BSF\_NOT\_FOUND  
  AVERROR\_STREAM\_NOT\_FOUND  
  
  
2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h  
  Move AV\_NOPTS\_VALUE, AV\_TIME\_BASE, AV\_TIME\_BASE\_Q symbols from  
  avcodec.h to avcore.h.  
  
  
2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC\_CAP\_NEG\_LINESIZES  
  Add CODEC\_CAP\_NEG\_LINESIZES codec capability flag in avcodec.h.  
  
  
2010-12-04 - bb4afa1 - lavu 50.34.0 - av\_get\_pix\_fmt\_string()  
  Deprecate avcodec\_pix\_fmt\_string() in favor of  
  pixdesc.h/av\_get\_pix\_fmt\_string().  
  
  
2010-12-04 - 4da12e3 - lavcore 0.15.0 - av\_image\_alloc()  
  Add av\_image\_alloc() to libavcore/imgutils.h.  
  
  
2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter\_graph\_create\_filter()  
  Add function avfilter\_graph\_create\_filter() in avfiltergraph.h.  
  
  
2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter\_get\_video\_buffer\_ref\_from\_arrays()  
  Add function avfilter\_get\_video\_buffer\_ref\_from\_arrays() in  
  avfilter.h.  
  
  
2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h  
  Add a public audio channel API in audioconvert.h, and deprecate the  
  corresponding functions in libavcodec:  
  avcodec\_get\_channel\_name()  
  avcodec\_get\_channel\_layout()  
  avcodec\_get\_channel\_layout\_string()  
  avcodec\_channel\_layout\_num\_channels()  
  and the CH\_\* macros defined in libavcodec/avcodec.h.  
  
  
2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h  
  Add av\_append\_packet().  
  
  
2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h  
  Add av\_grow\_packet().  
  
  
2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h  
  Add av\_parse\_color() declared in libavcore/parseutils.h.  
  
  
2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext  
  Add AVCodecContext.subtitle\_header and AVCodecContext.subtitle\_header\_size  
  fields.  
  
  
2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h  
  Make avfiltergraph.h public.  
  
  
2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h  
  Remove declarations from avfiltergraph.h for the functions:  
  avfilter\_graph\_check\_validity()  
  avfilter\_graph\_config\_links()  
  avfilter\_graph\_config\_formats()  
  which are now internal.  
  Use avfilter\_graph\_config() instead.  
  
  
2010-11-08 - d2af720 - lavu 50.33.0 - eval.h  
  Deprecate functions:  
  av\_parse\_and\_eval\_expr(),  
  av\_parse\_expr(),  
  av\_eval\_expr(),  
  av\_free\_expr(),  
  in favor of the functions:  
  av\_expr\_parse\_and\_eval(),  
  av\_expr\_parse(),  
  av\_expr\_eval(),  
  av\_expr\_free().  
  
  
2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter\_free()  
  Rename avfilter\_destroy() to avfilter\_free().  
  This change breaks libavfilter API/ABI.  
  
  
2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h  
  Remove graphparser.h header, move AVFilterInOut and  
  avfilter\_graph\_parse() declarations to libavfilter/avfiltergraph.h.  
  
  
2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut  
  Rename field AVFilterInOut.filter to AVFilterInOut.filter\_ctx.  
  This change breaks libavfilter API.  
  
  
2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter\_graph\_free()  
  Rename avfilter\_graph\_destroy() to avfilter\_graph\_free().  
  This change breaks libavfilter API/ABI.  
  
  
2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter\_graph\_alloc()  
  Add avfilter\_graph\_alloc() to libavfilter/avfiltergraph.h.  
  
  
2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av\_get\_bits\_per\_sample\_fmt()  
  Add av\_get\_bits\_per\_sample\_fmt() to libavcore/samplefmt.h and  
  deprecate av\_get\_bits\_per\_sample\_format().  
  
  
2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h  
  Add sample format functions in libavcore/samplefmt.h:  
  av\_get\_sample\_fmt\_name(),  
  av\_get\_sample\_fmt(),  
  av\_get\_sample\_fmt\_string(),  
  and deprecate the corresponding libavcodec/audioconvert.h functions:  
  avcodec\_get\_sample\_fmt\_name(),  
  avcodec\_get\_sample\_fmt(),  
  avcodec\_sample\_fmt\_string().  
  
  
2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h  
  Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum  
  SampleFormat.  
  
  
2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter\_graph\_config()  
  Add the function avfilter\_graph\_config() in avfiltergraph.h.  
  
  
2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API  
  Change demuxers to export metadata in generic format and  
  muxers to accept generic format. Deprecate the public  
  conversion API.  
  
  
2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time\_base  
  Add time\_base field to AVFilterLink.  
  
  
2010-09-27 - c85eef4 - lavu 50.31.0 - av\_set\_options\_string()  
  Move av\_set\_options\_string() from libavfilter/parseutils.h to  
  libavutil/opt.h.  
  
  
2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink  
  Make the AVFilterLink fields srcpad and dstpad store the pointers to  
  the source and destination pads, rather than their indexes.  
  
  
2010-09-27 - 372e288 - lavu 50.30.0 - av\_get\_token()  
  Move av\_get\_token() from libavfilter/parseutils.h to  
  libavutil/avstring.h.  
  
  
2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h  
  Add the functions sws\_alloc\_context() and sws\_init\_context().  
  
  
2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h  
  Move libavcodec/opt.h to libavutil/opt.h.  
  
  
2010-09-24 - 1c1c80f - lavu 50.28.0 - av\_log\_set\_flags()  
  Default of av\_log() changed due to many problems to the old no repeat  
  detection. Read the docs of AV\_LOG\_SKIP\_REPEATED in log.h before  
  enabling it for your app!.  
  
  
2010-09-24 - f66eb58 - lavc 52.90.0 - av\_opt\_show2()  
  Deprecate av\_opt\_show() in favor or av\_opt\_show2().  
  
  
2010-09-14 - bc6f0af - lavu 50.27.0 - av\_popcount()  
  Add av\_popcount() to libavutil/common.h.  
  
  
2010-09-08 - c6c98d0 - lavu 50.26.0 - av\_get\_cpu\_flags()  
  Add av\_get\_cpu\_flags().  
  
  
2010-09-07 - 34017fd - lavcore 0.9.0 - av\_image\_copy()  
  Add av\_image\_copy().  
  
  
2010-09-07 - 9686abb - lavcore 0.8.0 - av\_image\_copy\_plane()  
  Add av\_image\_copy\_plane().  
  
  
2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h  
  Adopt hierarchical scheme for the imgutils.h function names,  
  deprecate the old names.  
  
  
2010-09-04 - 7160bb7 - lavu 50.25.0 - AV\_CPU\_FLAG\_\*  
  Deprecate the FF\_MM\_\* flags defined in libavcodec/avcodec.h in favor  
  of the AV\_CPU\_FLAG\_\* flags defined in libavutil/cpu.h.  
  
  
2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec\_get\_channel\_layout()  
  Add avcodec\_get\_channel\_layout() in audioconvert.h.  
  
  
2010-08-20 - e344336 - lavcore 0.6.0 - av\_fill\_image\_max\_pixsteps()  
  Rename av\_fill\_image\_max\_pixstep() to av\_fill\_image\_max\_pixsteps().  
  
  
2010-08-18 - a6ddf8b - lavcore 0.5.0 - av\_fill\_image\_max\_pixstep()  
  Add av\_fill\_image\_max\_pixstep() in imgutils.h.  
  
  
2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV\_NE()  
  Add the AV\_NE macro.  
  
  
2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework  
  Implement AVFilterBufferRefAudioProps struct for audio properties,  
  get\_audio\_buffer(), filter\_samples() functions and related changes.  
  
  
2010-08-12 - 81c1eca - lavcore 0.4.0 - av\_get\_image\_linesize()  
  Add av\_get\_image\_linesize() in imgutils.h.  
  
  
2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef  
  Resize data and linesize arrays in AVFilterBufferRef to 8.  
  
  
  This change breaks libavfilter API/ABI.  
  
  
2010-08-11 - 9f08d80 - lavc 52.85.0 - av\_picture\_data\_copy()  
  Add av\_picture\_data\_copy in avcodec.h.  
  
  
2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter\_open()  
  Change avfilter\_open() signature:  
  AVFilterContext \*avfilter\_open(AVFilter \*filter, const char \*inst\_name) ->  
  int avfilter\_open(AVFilterContext \*\*filter\_ctx, AVFilter \*filter, const char \*inst\_name);  
  
  
  This change breaks libavfilter API/ABI.  
  
  
2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef  
  Add a type field to AVFilterBufferRef, and move video specific  
  properties to AVFilterBufferRefVideoProps.  
  
  
  This change breaks libavfilter API/ABI.  
  
  
2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink  
  Rename AVFilterLink fields:  
  AVFilterLink.srcpic    ->  AVFilterLink.src\_buf  
  AVFilterLink.cur\_pic   ->  AVFilterLink.cur\_buf  
  AVFilterLink.outpic    ->  AVFilterLink.out\_buf  
  
  
2010-08-07 - 7fce481 - lavfi 1.30.0  
  Rename functions and fields:  
  avfilter\_(un)ref\_pic       -> avfilter\_(un)ref\_buffer  
  avfilter\_copy\_picref\_props -> avfilter\_copy\_buffer\_ref\_props  
  AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer  
  
  
2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef  
  Rename AVFilterPicRef to AVFilterBufferRef.  
  
  
2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer  
  Move format field from AVFilterBuffer to AVFilterPicRef.  
  
  
2010-08-06 - bf176f5 - lavcore 0.3.0 - av\_check\_image\_size()  
  Deprecate avcodec\_check\_dimensions() in favor of the function  
  av\_check\_image\_size() defined in libavcore/imgutils.h.  
  
  
2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer  
  Increase size of the arrays AVFilterBuffer.data and  
  AVFilterBuffer.linesize from 4 to 8.  
  
  
  This change breaks libavfilter ABI.  
  
  
2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h  
  Add functions av\_fill\_image\_linesizes() and  
  av\_fill\_image\_pointers(), declared in libavcore/imgutils.h.  
  
  
2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h  
  Deprecate av\_parse\_video\_frame\_size() and av\_parse\_video\_frame\_rate()  
  defined in libavcodec in favor of the newly added functions  
  av\_parse\_video\_size() and av\_parse\_video\_rate() declared in  
  libavcore/parseutils.h.  
  
  
2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h  
  Add the M\_PHI constant definition.  
  
  
2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization  
  Add a type field to AVFilterLink.  
  
  
  Change the field types:  
  enum PixelFormat format   -> int format   in AVFilterBuffer  
  enum PixelFormat \*formats -> int \*formats in AVFilterFormats  
  enum PixelFormat \*format  -> int format   in AVFilterLink  
  
  
  Change the function signatures:  
  AVFilterFormats \*avfilter\_make\_format\_list(const enum PixelFormat \*pix\_fmts); ->  
  AVFilterFormats \*avfilter\_make\_format\_list(const int \*fmts);  
  
  
  int avfilter\_add\_colorspace(AVFilterFormats \*\*avff, enum PixelFormat pix\_fmt); ->  
  int avfilter\_add\_format    (AVFilterFormats \*\*avff, int fmt);  
  
  
  AVFilterFormats \*avfilter\_all\_colorspaces(void); ->  
  AVFilterFormats \*avfilter\_all\_formats    (enum AVMediaType type);  
  
  
  This change breaks libavfilter API/ABI.  
  
  
2010-07-21 - aac6ca6 - lavcore 0.0.0  
  Add libavcore.  
  
  
2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer  
  Remove w and h fields from AVFilterBuffer.  
  
  
2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer  
  Rename AVFilterPic to AVFilterBuffer.  
  
  
2010-07-17 - 57fe80f - lavf 52.74.0 - url\_fskip()  
  Make url\_fskip() return an int error code instead of void.  
  
  
2010-07-11 - 23940f1 - lavc 52.83.0  
  Add AVCodecContext.lpc\_type and AVCodecContext.lpc\_passes fields.  
  Add AVLPCType enum.  
  Deprecate AVCodecContext.use\_lpc.  
  
  
2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle\_free()  
  Add a function for free the contents of a AVSubtitle generated by  
  avcodec\_decode\_subtitle.  
  
  
2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h  
  Make the bswap.h and intreadwrite.h API public.  
  
  
2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h  
  Rename read/write\_line() to av\_read/write\_image\_line().  
  
  
2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter\_copy\_picref\_props()  
  Add avfilter\_copy\_picref\_props().  
  
  
2010-07-03 - 2d525ef - lavc 52.79.0  
  Add FF\_COMPLIANCE\_UNOFFICIAL and change all instances of  
  FF\_COMPLIANCE\_INOFFICIAL to use FF\_COMPLIANCE\_UNOFFICIAL.  
  
  
2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h  
  Export av\_lfg\_init(), av\_lfg\_get(), av\_mlfg\_get(), and av\_bmg\_get() through  
  lfg.h.  
  
  
2010-06-28 - a52e2c3 - lavfi 1.20.1 - av\_parse\_color()  
  Extend av\_parse\_color() syntax, make it accept an alpha value specifier and  
  set the alpha value to 255 by default.  
  
  
2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv\_data\_size, priv\_data\_class  
  Add priv\_data\_size and priv\_data\_class to URLProtocol.  
  
  
2010-06-22 - ffbb289 - lavf 52.70.0 - url\_alloc(), url\_connect()  
  Add url\_alloc() and url\_connect().  
  
  
2010-06-22 - 9b07a2d - lavf 52.69.0 - av\_register\_protocol2()  
  Add av\_register\_protocol2(), deprecating av\_register\_protocol().  
  
  
2010-06-09 - 65db058 - lavu 50.19.0 - av\_compare\_mod()  
  Add av\_compare\_mod() to libavutil/mathematics.h.  
  
  
2010-06-05 - 0b99215 - lavu 50.18.0 - eval API  
  Make the eval API public.  
  
  
2010-06-04 - 31878fc - lavu 50.17.0 - AV\_BASE64\_SIZE  
  Add AV\_BASE64\_SIZE() macro.  
  
  
2010-06-02 - 7e566bb - lavc 52.73.0 - av\_get\_codec\_tag\_string()  
  Add av\_get\_codec\_tag\_string().  
  
  
  
  
\-------- 8< --------- FFmpeg 0.6 was cut here -------- 8< ---------  
  
  
2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API  
  Add sws\_convertPalette8ToPacked32() and sws\_convertPalette8ToPacked24().  
  
  
2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC\_CAP\_EXPERIMENTAL  
  Add CODEC\_CAP\_EXPERIMENTAL flag.  
  NOTE: this was backported to 0.6  
  
  
2010-05-23 - 9977863 - lavu 50.16.0 - av\_get\_random\_seed()  
  Add av\_get\_random\_seed().  
  
  
2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT\_FLAG\_RTP\_HINT  
  Add AVFMT\_FLAG\_RTP\_HINT as possible value for AVFormatContext.flags.  
  NOTE: this was backported to 0.6  
  
  
2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef  
  Add interlaced and top\_field\_first fields to AVFilterPicRef.  
  
  
2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function  
  Add av\_probe\_input\_format2 to API, it allows ignoring probe  
  results below given score and returns the actual probe score.  
  
  
2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API  
  Add a flag for av\_metadata\_set2() to disable overwriting of  
  existing tags.  
  
  
2010-04-01 - 0fb49b5 - lavc 52.66.0  
  Add avcodec\_get\_edge\_width().  
  
  
2010-03-31 - d103218 - lavc 52.65.0  
  Add avcodec\_copy\_context().  
  
  
2010-03-31 - 1a70d12 - lavf 52.60.0 - av\_match\_ext()  
  Make av\_match\_ext() public.  
  
  
2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType  
  Move AVMediaType enum from libavcodec to libavutil.  
  
  
2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType  
  Define AVMediaType enum, and use it instead of enum CodecType, which  
  is deprecated and will be dropped at the next major bump.  
  
  
2010-03-25 - 8795823 - lavu 50.13.0 - av\_strerror()  
  Implement av\_strerror().  
  
  
2010-03-23 - e1484eb - lavc 52.60.0 - av\_dct\_init()  
  Support DCT-I and DST-I.  
  
  
2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start\_time\_realtime  
  Add AVFormatContext.start\_time\_realtime field.  
  
  
2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos  
  Add AVFilterPicRef.pos field.  
  
  
2010-03-13 - 60c144f - lavu 50.12.0 - error.h  
  Move error code definitions from libavcodec/avcodec.h to  
  the new public header libavutil/error.h.  
  
  
2010-03-07 - c709483 - lavc 52.56.0 - avfft.h  
  Add public FFT interface.  
  
  
2010-03-06 - ac6ef86 - lavu 50.11.0 - av\_stristr()  
  Add av\_stristr().  
  
  
2010-03-03 - 4b83fc0 - lavu 50.10.0 - av\_tree\_enumerate()  
  Add av\_tree\_enumerate().  
  
  
2010-02-07 - b687c1a - lavu 50.9.0 - av\_compare\_ts()  
  Add av\_compare\_ts().  
  
  
2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws\_getCoefficients()  
  Add sws\_getCoefficients().  
  
  
2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API  
  Add a list of generic tag names, change 'author' -> 'artist',  
  'year' -> 'date'.  
  
  
2010-01-30 - 80a07f6 - lavu 50.8.0 - av\_get\_pix\_fmt()  
  Add av\_get\_pix\_fmt().  
  
  
2010-01-21 - 01cc47d - lsws 0.9.0 - sws\_scale()  
  Change constness attributes of sws\_scale() parameters.  
  
  
2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter\_graph\_config\_links()  
  Add a log\_ctx parameter to avfilter\_graph\_config\_links().  
  
  
2010-01-07 - 8e9767f - lsws 0.8.0 - sws\_isSupported\{In,Out\}put()  
  Add sws\_isSupportedInput() and sws\_isSupportedOutput() functions.  
  
  
2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter\_add\_colorspace()  
  Change the avfilter\_add\_colorspace() signature, make it accept an  
  (AVFilterFormats \*\*) rather than an (AVFilterFormats \*) as before.  
  
  
2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter\_add\_colorspace()  
  Add avfilter\_add\_colorspace().  
  
  
2010-01-02 - 8eb631f - lavf 52.46.0 - av\_match\_ext()  
  Add av\_match\_ext(), it should be used in place of match\_ext().  
  
  
2010-01-01 - a1f547b - lavf 52.45.0 - av\_guess\_format()  
  Add av\_guess\_format(), it should be used in place of guess\_format().  
  
  
2009-12-13 - a181981 - lavf 52.43.0 - metadata API  
  Add av\_metadata\_set2(), AV\_METADATA\_DONT\_STRDUP\_KEY and  
  AV\_METADATA\_DONT\_STRDUP\_VAL.  
  
  
2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API  
  Add av\_d2str().  
  
  
2009-12-13 - 02b398e - lavc 52.42.0 - AVStream  
  Add avg\_frame\_rate.  
  
  
2009-12-12 - 3ba69a1 - lavu 50.6.0 - av\_bmg\_next()  
  Introduce the av\_bmg\_next() function.  
  
  
2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter\_draw\_slice()  
  Add a slice\_dir parameter to avfilter\_draw\_slice().  
  
  
2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter  
  Remove the next field from AVFilter, this is not anymore required.  
  
  
2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter\_next()  
  Introduce the avfilter\_next() function.  
  
  
2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter\_register()  
  Change the signature of avfilter\_register() to make it return an  
  int. This is required since now the registration operation may fail.  
  
  
2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API  
  Make the pixdesc.h API public.  
  
  
2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next  
  Add a next field to AVFilter, this is used for simplifying the  
  registration and management of the registered filters.  
  
  
2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description  
  Add a description field to AVFilter.  
  
  
2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter\_make\_format\_list()  
  Change the interface of avfilter\_make\_format\_list() from  
  avfilter\_make\_format\_list(int n, ...) to  
  avfilter\_make\_format\_list(enum PixelFormat \*pix\_fmts).  
  
  
2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter\_get\_video\_buffer()  
  Make avfilter\_get\_video\_buffer() recursive and add the w and h  
  parameters to it.  
  
  
2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic  
  Add w and h fields to AVFilterPic.  
  
  
2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet\_size  
  This is now an unsigned int instead of a signed int.  
  
  
2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts  
  Add a pts field to AVSubtitle which gives the subtitle packet pts  
  in AV\_TIME\_BASE. Some subtitle de-/encoders (e.g. XSUB) will  
  not work right without this.  
  
  
2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV\_PKT\_FLAG\_KEY  
  PKT\_FLAG\_KEY has been deprecated and will be dropped at the next  
  major version. Use AV\_PKT\_FLAG\_KEY instead.  
  
  
2009-06-01 - f988ce6 - lavc 52.30.0 - av\_lockmgr\_register()  
  av\_lockmgr\_register() can be used to register a callback function  
  that lavc (and in the future, libraries that depend on lavc) can use  
  to implement mutexes. The application should provide a callback function  
  that implements the AV\_LOCK\_\* operations described in avcodec.h.  
  When the lock manager is registered, FFmpeg is guaranteed to behave  
  correctly in a multi-threaded application.  
  
  
2009-04-30 - ce1d9c8 - lavc 52.28.0 - av\_free\_packet()  
  av\_free\_packet() is no longer an inline function. It is now exported.  
  
  
2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av\_destruct\_packet\_nofree()  
  Please use NULL instead. This has been supported since r16506  
  (lavf > 52.23.1, lavc > 52.10.0).  
  
  
2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec\_decode\_video/audio/subtitle  
  The old decoding functions are deprecated, all new code should use the  
  new functions avcodec\_decode\_video2(), avcodec\_decode\_audio3() and  
  avcodec\_decode\_subtitle2(). These new functions take an AVPacket \*pkt  
  argument instead of a const uint8\_t \*buf / int buf\_size pair.  
  
  
2009-04-03 - 7b09db3 - lavu 50.3.0 - av\_fifo\_space()  
  Introduce the av\_fifo\_space() function.  
  
  
2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket  
  Move AVPacket declaration from libavformat/avformat.h to  
  libavcodec/avcodec.h.  
  
  
2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats  
  Convert the pixel formats PIX\_FMT\_ARGB, PIX\_FMT\_RGBA, PIX\_FMT\_ABGR,  
  PIX\_FMT\_BGRA, which were defined as macros, into enum PixelFormat values.  
  Conversely PIX\_FMT\_RGB32, PIX\_FMT\_RGB32\_1, PIX\_FMT\_BGR32 and  
  PIX\_FMT\_BGR32\_1 are now macros.  
  avcodec\_get\_pix\_fmt() now recognizes the "rgb32" and "bgr32" aliases.  
  Re-sort the enum PixelFormat list accordingly.  
  This change breaks API/ABI backward compatibility.  
  
  
2009-03-22 - f82674e - lavu 50.1.0 - PIX\_FMT\_RGB5X5 endian variants  
  Add the enum PixelFormat values:  
  PIX\_FMT\_RGB565BE, PIX\_FMT\_RGB565LE, PIX\_FMT\_RGB555BE, PIX\_FMT\_RGB555LE,  
  PIX\_FMT\_BGR565BE, PIX\_FMT\_BGR565LE, PIX\_FMT\_BGR555BE, PIX\_FMT\_BGR555LE.  
  
  
2009-03-21 - ee6624e - lavu 50.0.0  - av\_random\*  
  The Mersenne Twister PRNG implemented through the av\_random\* functions  
  was removed. Use the lagged Fibonacci PRNG through the av\_lfg\* functions  
  instead.  
  
  
2009-03-08 - 41dd680 - lavu 50.0.0  - AVFifoBuffer  
  av\_fifo\_init, av\_fifo\_read, av\_fifo\_write and av\_fifo\_realloc were dropped  
  and replaced by av\_fifo\_alloc, av\_fifo\_generic\_read, av\_fifo\_generic\_write  
  and av\_fifo\_realloc2.  
  In addition, the order of the function arguments of av\_fifo\_generic\_read  
  was changed to match av\_fifo\_generic\_write.  
  The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by  
  applications, they may not use sizeof() or directly access members.  
  
  
2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API  
  Introduce a new metadata API (see av\_metadata\_get() and friends).  
  The old API is now deprecated and should not be used anymore. This especially  
  includes the following structure fields:  
    - AVFormatContext.title  
    - AVFormatContext.author  
    - AVFormatContext.copyright  
    - AVFormatContext.comment  
    - AVFormatContext.album  
    - AVFormatContext.year  
    - AVFormatContext.track  
    - AVFormatContext.genre  
    - AVStream.language  
    - AVStream.filename  
    - AVProgram.provider\_name  
    - AVProgram.name  
    - AVChapter.title

http://blog.csdn.net/leixiaohua1020/article/details/41013567

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