APIchanges

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:    2015-08-28
libavdevice:   2015-08-28
libavfilter:   2015-08-28
libavformat:   2015-08-28
libavresample: 2015-08-28
libpostproc:   2015-08-28
libswresample: 2015-08-28
libswscale:    2015-08-28
libavutil:     2015-08-28


API changes, most recent first:

2016-01-01 - xxxxxxx - lavc 57.21.100 / 57.12.0 - avcodec.h
  Add AVCodecDescriptor.profiles and avcodec_profile_name().

2015-12-28 - xxxxxxx - lavf 57.21.100 - avformat.h
  Add automatic bitstream filtering; add av_apply_bitstream_filters()

2015-12-22 - xxxxxxx - lavfi 6.21.101 - avfilter.h
  Deprecate avfilter_link_set_closed().
  Applications are not supposed to mess with links,
  they should close the sinks.

2015-12-17 - lavc 57.18.100 / 57.11.0 - avcodec.h dirac.h
  xxxxxxx - Add av_packet_add_side_data().
  xxxxxxx - Add AVCodecContext.coded_side_data.
  xxxxxxx - Add AVCPBProperties API.
  xxxxxxx - Add a new public header dirac.h containing
            av_dirac_parse_sequence_header()

2015-12-11 - xxxxxxx - lavf 57.20.100 - avformat.h
  Add av_program_add_stream_index()

2015-11-29 - xxxxxxx - lavc 57.16.101 - avcodec.h
  Deprecate rtp_callback without replacement, i.e. it won't be possible to
  get image slices before the full frame is encoded any more. The libavformat
  rtpenc muxer can still be used for RFC-2190 packetization.

2015-11-xx - xxxxxxx - lavc 57.16.0 - avcodec.h
  Add AV_PKT_DATA_FALLBACK_TRACK for making fallback associations between
  streams.

2015-11-xx - xxxxxxx - lavf 57.19.100 - avformat.h
  Add av_stream_new_side_data().

2015-11-xx - xxxxxxx - lavu 55.8.100 - xtea.h
    Add av_xtea_le_init and av_xtea_le_crypt

2015-11-18 - lavu 55.7.100 - mem.h
  Add av_fast_mallocz()

2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h
  xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement,
           it resets the packet in a more consistent way.
  xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases.
           Use av_packet_ref() to make a non-refcounted AVPacket refcounted.
  xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
           They match the AVFrame functions with the same name.

2015-10-27 - xxxxxxx - lavu 55.5.100 - cpu.h
  Add AV_CPU_FLAG_AESNI.

2015-10-22 - xxxxxxx - lavc 57.9.100 / lavc 57.5.0 - avcodec.h
  Add data and linesize array to AVSubtitleRect, to be used instead of
  the ones from the embedded AVPicture.

2015-10-22 - xxxxxxx - lavc 57.8.100 / lavc 57.0.0 - qsv.h
  Add an API for allocating opaque surfaces.

2015-10-15 - xxxxxxx - lavf 57.4.100
  Remove the latm demuxer that was a duplicate of the loas demuxer.

2015-10-14 - xxxxxxx - lavu 55.4.100 / lavu 55.2.0 - dict.h
  Change return type of av_dict_copy() from void to int, so that a proper
  error code can be reported.

2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / lavc 57.2.0 - avcodec.h
  Change type of AVPacket.duration from int to int64_t.

2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / lavc 57.2.0 - d3d11va.h
  Add av_d3d11va_alloc_context(). This function must from now on be used for
  allocating AVD3D11VAContext.

2015-09-15 - lavf 57.2.100 - avformat.h
  probesize and max_analyze_duration switched to 64bit, both
  are only accessible through AVOptions

2015-09-15 - lavf 57.1.100 - avformat.h
  bit_rate was changed to 64bit, make sure you update any
  printf() or other type sensitive code

2015-09-15 - lavc 57.2.100 - avcodec.h
  bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update
  any printf() or other type sensitive code

2015-09-07 - lavu 55.0.100 / lavu 55.0.0
  c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
  f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int
            and drop bit packing.
  151aa2e / 2268db2 - Add step, offset, and depth to AVComponentDescriptor to replace
            the deprecated step_minus1, offset_plus1, and depth_minus1.

-------- 8< --------- FFmpeg 2.8 was cut here -------- 8< ---------

2015-08-27 - 1dd854e1 - lavc 56.58.100 - vaapi.h
  Deprecate old VA-API context (vaapi_context) fields that were only
  set and used by libavcodec. They are all managed internally now.

2015-08-19 - 9f8e57ef - lavu 54.31.100 - pixfmt.h
  Add a unique pixel format for VA-API (AV_PIX_FMT_VAAPI) that
  indicates the nature of the underlying storage: a VA surface. This
  yields the same value as AV_PIX_FMT_VAAPI_VLD.
  Deprecate old VA-API related pixel formats: AV_PIX_FMT_VAAPI_MOCO,
  AV_PIX_FMT_VAAPI_IDCT, AV_PIX_FMT_VAAPI_VLD.

2015-08-02 - lavu 54.30.100 / 54.17.0
  9ed59f1 / 7a7df34c -  Add av_blowfish_alloc().
  a130ec9 / ae365453 -  Add av_rc4_alloc().
  9ca1997 / 5d8bea3b -  Add av_xtea_alloc().
  3cf08e9 / d9e8b47e -  Add av_des_alloc().

2015-07-27 - lavc 56.56.100 / 56.35.0 - avcodec.h
  94d68a4 / 7c6eb0a1 - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*.
  444e987 / def97856 - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*.
  29d147c / 059a9348 - Rename FF_INPUT_BUFFER_PADDING_SIZE and FF_MIN_BUFFER_SIZE
              to AV_INPUT_BUFFER_PADDING_SIZE and AV_INPUT_BUFFER_MIN_SIZE.

2015-07-22 - c40ecff - lavc 56.51.100 - avcodec.h
  Add AV_PKT_DATA_QUALITY_STATS to export the quality value, PSNR, and pict_type
  of an AVPacket.

2015-07-16 - 8dad213 - lavc 56.49.100
  Add av_codec_get_codec_properties(), FF_CODEC_PROPERTY_LOSSLESS
  and FF_CODEC_PROPERTY_CLOSED_CAPTIONS

2015-07-03 - d563e13 / 83212943 - lavu 54.28.100 / 56.15.0
  Add av_version_info().

-------- 8< --------- FFmpeg 2.7 was cut here -------- 8< ---------

2015-06-04 - cc17b43 - lswr  1.2.100
  Add swr_get_out_samples()

2015-05-27 - c312bfa - lavu 54.26.100 - cpu.h
  Add AV_CPU_FLAG_AVXSLOW.

2015-05-26 - 1fb9b2a - lavu 54.25.100 - rational.h
  Add av_q2intfloat().

2015-05-13 - cc48409 / e7c5e17 - lavc 56.39.100 / 56.23.0
  Add av_vda_default_init2.

2015-05-11 - 541d75f - lavf 56.33.100 - avformat.h
  Add AVOpenCallback AVFormatContext.open_cb

2015-05-07 - a7dd933 - 56.38.100 - avcodec.h
  Add av_packet_side_data_name().

2015-05-07 - 01e59d4 - 56.37.102 - avcodec.h
  Add FF_PROFILE_VP9_2 and FF_PROFILE_VP9_3.

2015-05-04 - 079b7f6 - 56.37.100 - avcodec.h
  Add FF_PROFILE_VP9_0 and FF_PROFILE_VP9_1.

2015-04-22 - 748d481 - lavf 56.31.100 - avformat.h
  Add AVFMT_FLAG_FAST_SEEK flag. Some formats (initially mp3) use it to enable
  fast, but inaccurate seeking.

2015-04-20 - 8e8219e / c253340 - lavu 54.23.100 / 54.12.0 - log.h
  Add AV_LOG_TRACE for extremely verbose debugging.

2015-04-02 - 26e0e393 - lavf 56.29.100 - avio.h
  Add AVIODirEntryType.AVIO_ENTRY_SERVER.
  Add AVIODirEntryType.AVIO_ENTRY_SHARE.
  Add AVIODirEntryType.AVIO_ENTRY_WORKGROUP.

2015-03-31 - 3188696 - lavu 54.22.100 - avstring.h
  Add av_append_path_component()

2015-03-27 - 184084c - lavf 56.27.100 - avio.h url.h
  New directory listing API.

  Add AVIODirEntryType enum.
  Add AVIODirEntry, AVIODirContext structures.
  Add avio_open_dir(), avio_read_dir(), avio_close_dir(), avio_free_directory_entry().
  Add ff_alloc_dir_entry().
  Extend URLProtocol with url_open_dir(), url_read_dir(), url_close_dir().

2015-03-29 - 268ff17 / c484561 - lavu 54.21.100 / 54.10.0 - pixfmt.h
  Add AV_PIX_FMT_MMAL for MMAL hardware acceleration.

2015-03-19 - 11fe56c - 56.29.100 / lavc 56.22.0
  Add FF_PROFILE_DTS_EXPRESS.

-------- 8< --------- FFmpeg 2.6 was cut here -------- 8< ---------

2015-03-04 - cca4476 - lavf 56.25.100
  Add avformat_flush()

2015-03-03 - 81a9126 - lavf 56.24.100
  Add avio_put_str16be()

2015-02-19 - 560eb71 / 31d2039 - lavc 56.23.100 / 56.13.0
  Add width, height, coded_width, coded_height and format to
  AVCodecParserContext.

2015-02-19 - e375511 / 5b1d9ce - lavu 54.19.100 / 54.9.0
  Add AV_PIX_FMT_QSV for QSV hardware acceleration.

2015-02-14 - ba22295 - lavc 56.21.102
  Deprecate VIMA decoder.

2015-01-27 - 62a82c6 / 728685f - lavc 56.21.100 / 56.12.0, lavu 54.18.100 / 54.8.0 - avcodec.h, frame.h
  Add AV_PKT_DATA_AUDIO_SERVICE_TYPE and AV_FRAME_DATA_AUDIO_SERVICE_TYPE for
  storing the audio service type as side data.

2015-01-16 - a47c933 - lavf 56.19.100 - avformat.h
  Add data_codec and data_codec_id for storing codec of data stream

2015-01-11 - 007c33d - lavd 56.4.100 - avdevice.h
  Add avdevice_list_input_sources().
  Add avdevice_list_output_sinks().

2014-12-25 - d7aaeea / c220a60 - lavc 56.19.100 / 56.10.0 - vdpau.h
  Add av_vdpau_get_surface_parameters().

2014-12-25 - ddb9a24 / 6c99c92 - lavc 56.18.100 / 56.9.0 - avcodec.h
  Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context().

2014-12-25 - d16079a / 57b6704 - lavc 56.17.100 / 56.8.0 - avcodec.h
  Add AVCodecContext.sw_pix_fmt.

2014-12-04 - 6e9ac02 - lavc 56.14.100 - dv_profile.h
  Add av_dv_codec_profile2().

-------- 8< --------- FFmpeg 2.5 was cut here -------- 8< ---------

2014-11-21 - ab922f9 - lavu 54.15.100 - dict.h
   Add av_dict_get_string().

2014-11-18 - a54a51c - lavu 54.14.100 - float_dsp.h
  Add avpriv_float_dsp_alloc().

2014-11-16 - 6690d4c3 - lavf 56.13.100 - avformat.h
  Add AVStream.recommended_encoder_configuration with accessors.

2014-11-16 - bee5844d - lavu 54.13.100 - opt.h
  Add av_opt_serialize().

2014-11-16 - eec69332 - lavu 54.12.100 - opt.h
  Add av_opt_is_set_to_default().

2014-11-06 - 44fa267 / 5e80fb7 - lavc 56.11.100 / 56.6.0 - vorbis_parser.h
  Add a public API for parsing vorbis packets.

2014-10-15 - 17085a0 / 7ea1b34 - lavc 56.7.100 / 56.5.0 - avcodec.h
  Replace AVCodecContext.time_base used for decoding
  with AVCodecContext.framerate.

2014-10-15 - 51c810e / d565fef1 - lavc 56.6.100 / 56.4.0 - avcodec.h
  Add AV_HWACCEL_FLAG_IGNORE_LEVEL flag to av_vdpau_bind_context().

2014-10-13 - da21895 / 2df0c32e - lavc 56.5.100 / 56.3.0 - avcodec.h
  Add AVCodecContext.initial_padding. Deprecate the use of AVCodecContext.delay
  for audio encoding.

2014-10-08 - bb44f7d / 5a419b2 - lavu 54.10.100 / 54.4.0 - pixdesc.h
  Add API to return the name of frame and context color properties.

2014-10-06 - a61899a / e3e158e - lavc 56.3.100 / 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 - cdd6f05 - lavc 56.2.100 - avcodec.h
2014-10-02 - cdd6f05 - 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 - 0d92b0d - lavu 54.8.100 - avstring.h
  Add av_match_list()

2014-09-24 - ac68295 - libpostproc 53.1.100
  Add visualization support

2014-09-19 - 6edd6a4 - 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< ---------

2014-08-25 - 215db29 / b263f8f - lavf 56.3.100 / 56.3.0 - avformat.h
  Add AVFormatContext.max_ts_probe.

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.

2014-08-23 - 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 - 5482780 - 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 - 55cc60c - 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().

2014-05-20 - 7336e39 - 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 / 1bd0bdc - lavu 52.84.100 / 54.5.0 - 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.

2014-05-07 - 351f611 - lavu 52.82.100 - fifo.h
  Add av_fifo_freep() function.

2014-05-02 - ba52fb11 - lavu 52.81.100 - 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.

2014-04-30 - 617e866 - lavu 52.81.100 - pixdesc.h
  Add av_find_best_pix_fmt_of_2(), av_get_pix_fmt_loss()
  Deprecate avcodec_get_pix_fmt_loss(), avcodec_find_best_pix_fmt_of_2()

2014-04-29 - 1bf6396 - lavc 55.60.100 - avcodec.h
  Add AVCodecDescriptor.mime_types field.

2014-04-29 - b804eb4 - lavu 52.80.100 - 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.

2014-04-15 - ef818d8 - lavf 55.37.101 - 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.

2014-02-16 - 81c3f81 - 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 - 3532dd5 - 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()

2013-06-10 - 82ef670 - lavu 52.35.101 - hmac.h
  Add AV_HMAC_SHA224, AV_HMAC_SHA256, AV_HMAC_SHA384, AV_HMAC_SHA512

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.