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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.
libavcodec:    2021-04-27
libavdevice:   2021-04-27
libavfilter:   2021-04-27
libavformat:   2021-04-27
libpostproc:   2021-04-27
libswresample: 2021-04-27
libswscale:    2021-04-27
libavutil:     2021-04-27
2021-11-xx - xxxxxxxxxx - lavfi 8.19.100 - avfilter.h
  Add AVFILTER_FLAG_METADATA_ONLY.

2021-12-03 - xxxxxxxxxx - lavu 57.10.100 - frame.h
  Add AVFrame.time_base

2021-11-22 - xxxxxxxxxx - lavu 57.9.100 - pixfmt.h
  Add AV_PIX_FMT_P210, AV_PIX_FMT_P410, AV_PIX_FMT_P216, and AV_PIX_FMT_P416.

2021-11-17 - xxxxxxxxxx - lavf 57.9.100 - frame.h
  Add AV_FRAME_DATA_DOVI_RPU_BUFFER.

2021-11-xx - xxxxxxxxxx - lavf 59.9.100 - avformat.h
  Add av_stream_get_class(). Schedule adding AVStream.av_class at libavformat
  major version 60.
  Add av_disposition_to_string() and av_disposition_from_string().
  Add "disposition" AVOption to AVStream's class.
2021-11-12 - xxxxxxxxxx - lavu 57.8.100 - hwcontext_vulkan.h
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  Added AVVkFrame.sem_value, AVVulkanDeviceContext.queue_family_encode_index,
  nb_encode_queues, queue_family_decode_index, and nb_decode_queues.
2021-10-18 - xxxxxxxxxx - lavf 59.8.100 - avio.h
  Introduce public bytes_{read,written} statistic fields to AVIOContext.

2021-10-13 - xxxxxxxxxx - lavf 59.7.100 - avio.h
  Deprecate AVIOContext.written. Originally added as a private entry in
  commit 3f75e5116b900f1428aa13041fc7d6301bf1988a, its grouping with
  the comment noting its private state was missed during merging of the field
  from Libav (most likely due to an already existing field in between).

2021-09-21 - xxxxxxxxxx - lavu 57.7.100 - pixfmt.h
  Add AV_PIX_FMT_X2BGR10.

2021-09-20 - xxxxxxxxxx - lavu 57.6.100 - mem.h
  Deprecate av_mallocz_array() as it is identical to av_calloc().

2021-09-20 - xxxxxxxxxx - lavc 59.9.100 - avcodec.h
  Deprecate AVCodecContext.sub_text_format and the corresponding
  AVOptions. It is unused since the last major bump.

2021-09-20 - xxxxxxxxxx - lavc 59.8.100 - avcodec.h codec.h
  Deprecate AV_CODEC_FLAG_TRUNCATED and AV_CODEC_CAP_TRUNCATED,
  as they are redundant with parsers.

2021-09-17 - xxxxxxxxxx - lavu 57.5.101 - buffer.h
  Constified the input parameters in av_buffer_replace(), av_buffer_ref(),
  and av_buffer_pool_buffer_get_opaque().

2021-09-08 - xxxxxxxxxx - lavu 57.5.100 - hwcontext_d3d11va.h
  Add AVD3D11VAFramesContext.texture_infos

2021-09-06 - xxxxxxxxxx - lsws 6.1.100 - swscale.h
  Add AVFrame-based scaling API:
    - sws_scale_frame()
    - sws_frame_start()
    - sws_frame_end()
    - sws_send_slice()
    - sws_receive_slice()
    - sws_receive_slice_alignment()

2021-09-02 - xxxxxxxxxx - lavc 59.7.100 - avcodec.h
  Incremented the number of elements of AVCodecParser.codec_ids to seven.

2021-08-24 - xxxxxxxxxx - lavc 59.6.100 - avcodec.h
  Add FF_CODEC_PROPERTY_FILM_GRAIN

2021-08-20 - xxxxxxxxxx - lavfi 8.3.100 - avfilter.H
  Add avfilter_filter_pad_count() as a replacement for avfilter_pad_count().
  Deprecate avfilter_pad_count().
2021-08-17 - xxxxxxxxxx - lavu 57.4.101 - opt.h
  av_opt_copy() now guarantees that allocated src and dst options
  don't alias each other even on error.

2021-08-14 - xxxxxxxxxx - lavu 57.4.100 - imgutils.h
  Add av_image_copy_plane_uc_from()

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2021-08-02 - xxxxxxxxxx - lavc 59.4.100 - packet.h
  Add AVPacket.opaque, AVPacket.opaque_ref, AVPacket.time_base.

2021-07-23 - xxxxxxxxxx - lavu 57.3.100 - common.h macros.h
  Move several macros (AV_NE, FFDIFFSIGN, FFMAX, FFMAX3, FFMIN, FFMIN3,
  FFSWAP, FF_ARRAY_ELEMS, MKTAG, MKBETAG) from common.h to macros.h.

2021-07-22 - xxxxxxxxxx - lavu 57.2.100 - film_grain_params.h
  Add AV_FILM_GRAIN_PARAMS_H274, AVFilmGrainH274Params

2021-07-19 - xxxxxxxxxx - lavu 57.1.100 - cpu.h
  Add av_cpu_force_count()

2021-06-17 - xxxxxxxxxx - lavc 59.2.100 - packet.h
  Add AV_PKT_DATA_DYNAMIC_HDR10_PLUS
2021-06-09 - xxxxxxxxxx - lavf 59.3.100 - avformat.h
  Add pts_wrap_bits to AVStream

2021-xx-xx - xxxxxxxxxx - lavc 59.1.100 - avcodec.h codec.h
  Move av_get_profile_name() from avcodec.h to codec.h.

2021-xx-xx - xxxxxxxxxx - lavc 59.1.100 - avcodec.h codec_par.h
  Move av_get_audio_frame_duration2() from avcodec.h to codec_par.h.

2021-xx-xx - xxxxxxxxxx - lavc 59.1.100 - avcodec.h codec_id.h
  Move av_get_bits_per_sample(), av_get_exact_bits_per_sample(),
  avcodec_profile_name(), and av_get_pcm_codec() from avcodec.h
  to codec_id.h.
2021-xx-xx - xxxxxxxxxx - lavc 59.1.100 - avcodec.h defs.h
  Add new installed header defs.h. The following definitions are moved
  into it from avcodec.h:
    - AVDiscard
    - AVAudioServiceType
    - AVPanScan
    - AVCPBProperties and av_cpb_properties_alloc()
    - AVProducerReferenceTime
    - av_xiphlacing()

2021-04-27 - cb3ac722f4 - lavc 59.0.100 - avcodec.h
  Constified AVCodecParserContext.parser.

2021-04-27 - 8b3e6ce5f4 - lavd 59.0.100 - avdevice.h
  The av_*_device_next API functions now accept and return
  pointers to const AVInputFormat resp. AVOutputFormat.

2021-04-27 - d7e0d428fa - lavd 59.0.100 - avdevice.h
  avdevice_list_input_sources and avdevice_list_output_sinks now accept
  pointers to const AVInputFormat resp. const AVOutputFormat.

2021-04-27 - 46dac8cf3d - lavf 59.0.100 - avformat.h
  av_find_best_stream now uses a const AVCodec ** parameter
  for the returned decoder.

2021-04-27 - 626535f6a1 - lavc 59.0.100 - codec.h
  avcodec_find_encoder_by_name(), avcodec_find_encoder(),
  avcodec_find_decoder_by_name() and avcodec_find_decoder()
  now return a pointer to const AVCodec.

2021-04-27 - 14fa0a4efb - lavf 59.0.100 - avformat.h
  Constified AVFormatContext.*_codec.

2021-04-27 - 56450a0ee4 - lavf 59.0.100 - avformat.h
  Constified the pointers to AVInputFormats and AVOutputFormats
  in AVFormatContext, avformat_alloc_output_context2(),
  av_find_input_format(), av_probe_input_format(),
  av_probe_input_format2(), av_probe_input_format3(),
  av_probe_input_buffer2(), av_probe_input_buffer(),
  avformat_open_input(), av_guess_format() and av_guess_codec().
  Furthermore, constified the AVProbeData in av_probe_input_format(),
  av_probe_input_format2() and av_probe_input_format3().

2021-04-19 - 18af1ea8d1 - lavu 56.74.100 - tx.h
  Add AV_TX_FULL_IMDCT and AV_TX_UNALIGNED.

2021-04-17 - f1bf465aa0 - lavu 56.73.100 - frame.h detection_bbox.h
2021-04-06 - 557953a397 - lavf 58.78.100 - avformat.h
  Add avformat_index_get_entries_count(), avformat_index_get_entry(),
  and avformat_index_get_entry_from_timestamp().

2021-03-21 - a77beea6c8 - lavu 56.72.100 - frame.h
  Deprecated av_get_colorspace_name().
  Use av_color_space_name() instead.

-------- 8< --------- FFmpeg 4.4 was cut here -------- 8< ---------

2021-03-19 - e8c0bca6bd - lavu 56.69.100 - adler32.h
  Added a typedef for the type of the Adler-32 checksums
  used by av_adler32_update(). It will be changed to uint32_t
  at the next major bump.
  The type of the parameter for the length of the input buffer
  will also be changed to size_t at the next major bump.

2021-03-19 - e318438f2f - lavf 58.75.100  - avformat.h
  AVChapter.id will be changed from int to int64_t
  on the next major version bump.

2021-03-17 - f7db77bd87 - lavc 58.133.100 - codec.h
  Deprecated av_init_packet(). Once removed, sizeof(AVPacket) will
  no longer be a part of the public ABI.
  Deprecated AVPacketList.

2021-03-16 - 7d09579190 - lavc 58.132.100 - codec.h
  Add AV_CODEC_CAP_OTHER_THREADS as a new name for
  AV_CODEC_CAP_AUTO_THREADS. AV_CODEC_CAP_AUTO_THREADS
  is now deprecated.

2021-03-12 - 6e7e3a3820 - lavc 58.131.100 - avcodec.h codec.h
  Add a get_encode_buffer callback to AVCodecContext, similar to
  get_buffer2 but for encoders.
  Add avcodec_default_get_encode_buffer().
  Add AV_GET_ENCODE_BUFFER_FLAG_REF.
  Encoders may now be flagged as AV_CODEC_CAP_DR1 capable.

2021-03-10 - 42e68fe015 - lavf 58.72.100 - avformat.h
  Change AVBufferRef related AVStream function and struct size
  parameter and fields type to size_t at next major bump.

2021-03-10 - d79e0fe65c - lavc 58.130.100 - packet.h
  Change AVBufferRef related AVPacket function and struct size
  parameter and fields type to size_t at next major bump.

2021-03-10 - 14040a1d91 - lavu 56.68.100 - buffer.h frame.h
  Change AVBufferRef and relevant AVFrame function and struct size
  parameter and fields type to size_t at next major bump.
2021-03-04 - a0eec776b6 - lavc 58.128.101 - avcodec.h
  Enable err_recognition to be set for encoders.

2021-03-03 - 2ff40b98ec - lavf 58.70.100 - avformat.h
  Deprecate AVFMT_FLAG_PRIV_OPT. It will do nothing
  as soon as av_demuxer_open() is removed.

2021-02-27 - dd9227e48f - lavc 58.126.100 - avcodec.h
  Deprecated avcodec_get_frame_class().

2021-02-21 - 5ca40d6d94 - lavu 56.66.100 - tx.h
  Add enum AVTXFlags and AVTXFlags.AV_TX_INPLACE

2021-02-14 - 4f49ca7bbc - lavd 58.12.100 - avdevice.h
  Deprecated avdevice_capabilities_create() and
  avdevice_capabilities_free().

2021-02-10 - 1bda9bb68a - lavu 56.65.100 - common.h
2021-01-26 - 5dd9567080 - lavu 56.64.100 - common.h
2021-01-25 - 56709ca8aa - lavc 58.119.100 - avcodec.h
  Deprecate AVCodecContext.debug_mv, FF_DEBUG_VIS_MV_P_FOR, FF_DEBUG_VIS_MV_B_FOR,
  FF_DEBUG_VIS_MV_B_BACK

2021-01-11 - ebdd33086a - lavc 58.116.100 - avcodec.h
  Add FF_PROFILE_VVC_MAIN_10 and FF_PROFILE_VVC_MAIN_10_444.

2020-01-01 - baecaa16c1 - lavu 56.63.100 - video_enc_params.h
2020-12-03 - eca12f4d5a - lavu 56.62.100 - timecode.h
  Add av_timecode_init_from_components.

2020-11-27 - a83098ab03 - lavc 58.114.100 - avcodec.h
  Deprecate AVCodecContext.thread_safe_callbacks. Starting with
  LIBAVCODEC_VERSION_MAJOR=60, user callbacks must always be
  thread-safe when frame threading is used.

2020-11-25 - d243dd540a - lavc 58.113.100 - avcodec.h
  Adds a new flag AV_CODEC_EXPORT_DATA_FILM_GRAIN for export_side_data.

2020-11-25 - 4f9ee87253 - lavu 56.61.100 - film_grain_params.h
  Adds a new API for extracting codec film grain parameters as side data.
  Adds a new AVFrameSideDataType entry AV_FRAME_DATA_FILM_GRAIN_PARAMS for it.

2020-10-28 - f95d9510ff - lavf 58.64.100 - avformat.h
  Add AVSTREAM_EVENT_FLAG_NEW_PACKETS.

2020-09-28 - 68918d3b7f - lavu 56.60.100 - buffer.h
  Add a av_buffer_replace() convenience function.

2020-09-13 - 837b6eb90e - lavu 56.59.100 - timecode.h
  Add av_timecode_make_smpte_tc_string2.

2020-08-21 - 06f2651204 - lavu 56.58.100 - avstring.h
  Deprecate av_d2str(). Use av_asprintf() instead.

2020-08-04 - 34de0abbe7 - lavu 56.58.100 - channel_layout.h
  Add AV_CH_LAYOUT_22POINT2 together with its newly required pieces:
  AV_CH_TOP_SIDE_LEFT, AV_CH_TOP_SIDE_RIGHT, AV_CH_BOTTOM_FRONT_CENTER,
  AV_CH_BOTTOM_FRONT_LEFT, AV_CH_BOTTOM_FRONT_RIGHT.

2020-07-23 - 84655b7101 - lavu 56.57.100 - cpu.h
  Add AV_CPU_FLAG_MMI and AV_CPU_FLAG_MSA.

2020-07-22 - 3a8e927176 - lavu 56.56.100 - imgutils.h
  Add av_image_fill_plane_sizes().

2020-07-15 - 448a9aaa78 - lavc 58.96.100 - packet.h
  Add AV_PKT_DATA_S12M_TIMECODE.

2020-06-12 - b09fb030c1 - lavu 56.55.100 - pixdesc.h
  Add AV_PIX_FMT_X2RGB10.

2020-06-11 - bc8ab084fb - lavu 56.54.100 - frame.h
  Add AV_FRAME_DATA_SEI_UNREGISTERED.

2020-06-10 - 1b4a98b029 - lavu 56.53.100 - log.h opt.h
  Add av_opt_child_class_iterate() and AVClass.child_class_iterate().
  Deprecate av_opt_child_class_next() and AVClass.child_class_next().

-------- 8< --------- FFmpeg 4.3 was cut here -------- 8< ---------

2020-06-05 - ec39c2276a - lavu 56.50.100 - buffer.h
  Passing NULL as alloc argument to av_buffer_pool_init2() is now allowed.

2020-05-27 - ba6cada92e - lavc 58.88.100 - avcodec.h codec.h
  Move AVCodec-related public API to new header codec.h.

2020-05-23 - 064b875e89 - lavu 56.49.100 - video_enc_params.h
2020-05-23 - 2e08b39444 - lavu 56.48.100 - hwcontext.h
  Add av_hwdevice_ctx_create_derived_opts.

2020-05-23 - 6b65c4ec54 - lavu 56.47.100 - rational.h
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  Add av_gcd_q().

2020-05-22 - af9e622776 - lavu 56.46.101 - opt.h
  Add AV_OPT_FLAG_CHILD_CONSTS.

2020-05-22 - 9d443c3e68 - lavc 58.87.100 - avcodec.h codec_par.h
  Move AVBitstreamFilter-related public API to new header bsf.h.
  Move AVCodecParameters-related public API to new header codec_par.h.

2020-05-21 - 13b1bbff0b - lavc 58.86.101 - avcodec.h
  Deprecated AV_CODEC_CAP_INTRA_ONLY and AV_CODEC_CAP_LOSSLESS.

2020-05-17 - 84af196c65 - lavu 56.46.100 - common.h
  Add av_sat_add64() and av_sat_sub64()

2020-05-12 - 991d417692 - lavu 56.45.100 - video_enc_params.h
  Add a new API for exporting video encoding information.
  Replaces the deprecated API for exporting QP tables from decoders.
  Add AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS to request this information from
  decoders.
2020-05-10 - dccd07f66d - lavu 56.44.100 - hwcontext_vulkan.h
  Add enabled_inst_extensions, num_enabled_inst_extensions, enabled_dev_extensions
  and num_enabled_dev_extensions fields to AVVulkanDeviceContext

2020-04-22 - 0e1db79e37 - lavc 58.81.100 - packet.h
                        - lavu 56.43.100 - dovi_meta.h
  Add AV_PKT_DATA_DOVI_CONF and AVDOVIDecoderConfigurationRecord.
2020-04-15 - 22b25b3ea5 - lavc 58.79.100 - avcodec.h
  Add formal support for calling avcodec_flush_buffers() on encoders.
  Encoders that set the cap AV_CODEC_CAP_ENCODER_FLUSH will be flushed.
  For all other encoders, the call is now a no-op rather than undefined
  behaviour.

2020-04-10 - 672946c7fe - lavc 58.78.100 - avcodec.h codec_desc.h codec_id.h packet.h
  Move AVCodecDesc-related public API to new header codec_desc.h.
  Move AVCodecID enum to new header codec_id.h.
  Move AVPacket-related public API to new header packet.h.

2020-03-29 - 4cb0dda555 - lavf 58.42.100 - avformat.h
  av_read_frame() now guarantees to handle uninitialized input packets
  and to return refcounted packets on success.

2020-03-27 - c52ec0367d - lavc 58.77.100 - avcodec.h
  av_packet_ref() now guarantees to return the destination packet
  in a blank state on error.

2020-03-10 - 05d27f342b - lavc 58.75.100 - avcodec.h
  Add AV_PKT_DATA_ICC_PROFILE.

2020-02-21 - d005a7cdfd - lavc 58.73.101 - avcodec.h
2020-02-21 - c666689491 - lavc 58.73.100 - avcodec.h
  Add AVCodecContext.export_side_data and AV_CODEC_EXPORT_DATA_MVS.

2020-02-13 - e8f054b095 - lavu 56.41.100 - tx.h
  Add AV_TX_INT32_FFT and AV_TX_INT32_MDCT

2020-02-12 - 3182114f88 - lavu 56.40.100 - log.h
2020-02-04 - a88449ffb2 - lavu 56.39.100 - hwcontext.h
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  Add AV_PIX_FMT_VULKAN
  Add AV_HWDEVICE_TYPE_VULKAN and implementation.

2020-01-30 - 27529eeb27 - lavf 58.37.100 - avio.h
  Add avio_protocol_get_class().

2020-01-15 - 717b2074ec - lavc 58.66.100 - avcodec.h
  Add AV_PKT_DATA_PRFT and AVProducerReferenceTime.

2019-12-27 - 45259a0ee4 - lavu 56.38.100 - eval.h
2019-12-26 - 16685114d5 - lavu 56.37.100 - buffer.h
  Add av_buffer_pool_buffer_get_opaque().

2019-11-17 - 1c23abc88f - lavu 56.36.100 - eval API
  Add av_expr_count_vars().

2019-10-14 - f3746d31f9 - lavu 56.35.101 - opt.h
  Add AV_OPT_FLAG_RUNTIME_PARAM.

2019-09-25 - f8406ab4b9 - lavc 58.59.100 - avcodec.h
  Add max_samples

2019-09-04 - 2a9d461abc - lavu 56.35.100 - hwcontext_videotoolbox.h
  Add av_map_videotoolbox_format_from_pixfmt2() for full range pixfmt

2019-09-01 - 8821d1f56e - lavu 56.34.100 - pixfmt.h
  Add EBU Tech. 3213-E AVColorPrimaries value

2019-08-17 - 95fa73a2b4 - lavf 58.31.101 - avio.h
  4K limit removed from avio_printf.

2019-08-17 - a82f8f2f10 - lavf 58.31.100 - avio.h
  Add avio_print_string_array and avio_print.

2019-07-27 - 42e2319ba9 - lavu 56.33.100 - tx.h
  Add AV_TX_DOUBLE_FFT and AV_TX_DOUBLE_MDCT

-------- 8< --------- FFmpeg 4.2 was cut here -------- 8< ---------

2019-06-21 - a30e44098a - lavu 56.30.100 - frame.h
2019-06-14 - edfced8c04 - lavu 56.29.100 - frame.h
2019-05-15 - b79b29ddb1 - lavu 56.28.100 - tx.h
  Add av_tx_init(), av_tx_uninit() and related definitions.

2019-04-20 - 3153a6502a - lavc 58.52.100 - avcodec.h
  Add AV_CODEC_FLAG_DROPCHANGED to allow avcodec_receive_frame to drop
  frames whose parameters differ from first decoded frame in stream.

2019-04-12 - abfeba9724 - lavf 58.27.102
  Rename hls,applehttp demuxer to hls

2019-01-27 - 5bcefceec8 - lavc 58.46.100 - avcodec.h
  Add discard_damaged_percentage

2019-01-08 - 1ef4828276 - lavu 56.26.100 - frame.h
  Add AV_FRAME_DATA_REGIONS_OF_INTEREST

2018-12-21 - 2744d6b364 - lavu 56.25.100 - hdr_dynamic_metadata.h
  Add AV_FRAME_DATA_DYNAMIC_HDR_PLUS enum value, av_dynamic_hdr_plus_alloc(),
  av_dynamic_hdr_plus_create_side_data() functions, and related structs.

-------- 8< --------- FFmpeg 4.1 was cut here -------- 8< ---------

2018-10-27 - 718044dc19 - lavu 56.21.100 - pixdesc.h
  Add av_read_image_line2(), av_write_image_line2()

2018-10-24 - f9d4126f28 - lavu 56.20.100 - frame.h
  Add AV_FRAME_DATA_S12M_TIMECODE

2018-10-11 - f6d48b618a - lavc 58.33.100 - mediacodec.h
  Add av_mediacodec_render_buffer_at_time().

2018-09-09 - 35498c124a - lavc 58.29.100 - avcodec.h
2018-08-16 - b33f5299a5 - lavc 58.23.100 - avcodec.h
2018-05-18 - 2b2f2f65f3 - lavf 58.15.100 - avformat.h
  Add pmt_version field to AVProgram

2018-05-17 - 5dfeb7f081 - lavf 58.14.100 - avformat.h
  Add AV_DISPOSITION_STILL_IMAGE

2018-05-10 - c855683427 - lavu 56.18.101 - hwcontext_cuda.h
  Add AVCUDADeviceContext.stream.

2018-04-30 - 56b081da57 - lavu 56.18.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_ALPHA to AV_PIX_FMT_PAL8.

2018-04-26 - 5be0410cb3 - lavu 56.17.100 - opt.h
  Add AV_OPT_FLAG_DEPRECATED.

2018-04-26 - 71fa82bed6 - lavu 56.16.100 - threadmessage.h
  Add av_thread_message_queue_nb_elems().

-------- 8< --------- FFmpeg 4.0 was cut here -------- 8< ---------

2018-04-03 - d6fc031caf - lavu 56.13.100 - pixdesc.h
  Deprecate AV_PIX_FMT_FLAG_PSEUDOPAL and make allocating a pseudo palette
  optional for API users (see AV_PIX_FMT_FLAG_PSEUDOPAL doxygen for details).

2018-04-01 - 860086ee16 - lavc 58.17.100 - avcodec.h
  Add av_packet_make_refcounted().

2018-04-01 - f1805d160d - lavfi 7.14.100 - avfilter.h
  Deprecate use of avfilter_register(), avfilter_register_all(),
  avfilter_next(). Add av_filter_iterate().

2018-03-25 - b7d0d912ef - lavc 58.16.100 - avcodec.h
  Add FF_SUB_CHARENC_MODE_IGNORE.

2018-03-23 - db2a7c947e - lavu 56.12.100 - encryption_info.h
  Add AVEncryptionInitInfo and AVEncryptionInfo structures to hold new side-data
  for encryption info.

2018-03-21 - f14ca60001 - lavc 58.15.100 - avcodec.h
  Add av_packet_make_writable().

2018-03-18 - 4b86ac27a0 - lavu 56.11.100 - frame.h
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  Add AV_FRAME_DATA_QP_TABLE_PROPERTIES and AV_FRAME_DATA_QP_TABLE_DATA.

2018-03-15 - e0e72539cf - lavu 56.10.100 - opt.h
  Add AV_OPT_FLAG_BSF_PARAM

2018-03-07 - 950170bd3b - lavu 56.9.100 - crc.h
  Add AV_CRC_8_EBU crc variant.

2018-03-07 - 2a0eb86857 - lavc 58.14.100 - mediacodec.h
  Change the default behavior of avcodec_flush() on mediacodec
  video decoders. To restore the previous behavior, use the new
  delay_flush=1 option.

2018-03-01 - 6731f60598 - lavu 56.8.100 - frame.h
  Add av_frame_new_side_data_from_buf().

2018-02-15 - 8a8d0b319a
  Change av_ripemd_update(), av_murmur3_update() and av_hash_update() length
  parameter type to size_t at next major bump.

2018-02-12 - bcab11a1a2 - lavfi 7.12.100 - avfilter.h
  Add AVFilterContext.extra_hw_frames.

2018-02-12 - d23fff0d8a - lavc 58.11.100 - avcodec.h
  Add AVCodecContext.extra_hw_frames.

2018-02-06 - 0694d87024 - lavf 58.9.100 - avformat.h
  Deprecate use of av_register_input_format(), av_register_output_format(),
  av_register_all(), av_iformat_next(), av_oformat_next().
  Add av_demuxer_iterate(), and av_muxer_iterate().

2018-02-06 - 36c85d6e77 - lavc 58.10.100 - avcodec.h
  Deprecate use of avcodec_register(), avcodec_register_all(),
  av_codec_next(), av_register_codec_parser(), and av_parser_next().
  Add av_codec_iterate() and av_parser_iterate().
2018-02-04 - ff46124b0d - lavf 58.8.100 - avformat.h
  Deprecate the current names of the RTSP "timeout", "stimeout", "user-agent"
  options. Introduce "listen_timeout" as replacement for the current "timeout"
  option, and "user_agent" as replacement for "user-agent". Once the deprecation
  is over, the old "timeout" option will be removed, and "stimeout" will be
  renamed to "stimeout" (the "timeout" option will essentially change semantics).

2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
  Deprecate AVFormatContext filename field which had limited length, use the
  new dynamically allocated url field instead.

2018-01-28 - ea3672b7d6 - lavf 58.7.100 - avformat.h
  Add url field to AVFormatContext and add ff_format_set_url helper function.

2018-01-27 - 6194d7e564 - lavf 58.6.100 - avformat.h
  Add AVFMTCTX_UNSEEKABLE (for HLS demuxer).

2018-01-23 - 9f07cf7c00 - lavu 56.9.100 - aes_ctr.h
  Add method to set the 16-byte IV.

2018-01-16 - 631c56a8e4 - lavf 58.5.100 - avformat.h
  Explicitly make avformat_network_init() and avformat_network_deinit() optional.
  If these are not called, network initialization and deinitialization is
  automatic, and unlike in older versions, fully supported, unless libavformat
  is linked to ancient GnuTLS and OpenSSL.

2018-01-16 - 6512ff72f9 - lavf 58.4.100 - avformat.h
  Deprecate AVStream.recommended_encoder_configuration. It was useful only for
  FFserver, which has been removed.

2018-01-05 - 798dcf2432 - lavfi 7.11.101 - avfilter.h
  Deprecate avfilter_link_get_channels(). Use av_buffersink_get_channels().

2017-01-04 - c29038f304 - lavr 4.0.0 - avresample.h
  Deprecate the entire library. Merged years ago to provide compatibility
  with Libav, it remained unmaintained by the FFmpeg project and duplicated
  functionality provided by libswresample.

  In order to improve consistency and reduce attack surface, it has been deprecated.
  Users of this library are asked to migrate to libswresample, which, as well as
  providing more functionality, is faster and has higher accuracy.

2017-12-26 - a04c2c707d - lavc 58.9.100 - avcodec.h
  Deprecate av_lockmgr_register(). You need to build FFmpeg with threading
  support enabled to get basic thread-safety (which is the default build
  configuration).

2017-12-24 - 8b81eabe57 - lavu 56.7.100 - cpu.h
  AVX-512 flags added.

2017-12-16 - 8bf4e6d3ce - lavc 58.8.100 - avcodec.h
  The MediaCodec decoders now support AVCodecContext.hw_device_ctx.

2017-12-16 - e4d9f05ca7 - lavu 56.6.100 - hwcontext.h hwcontext_mediacodec.h
  Add AV_HWDEVICE_TYPE_MEDIACODEC and a new installed header with
  MediaCodec-specific hwcontext definitions.

2017-12-14 - b945fed629 - lavc 58.7.100 - avcodec.h
  Add AV_CODEC_CAP_HARDWARE, AV_CODEC_CAP_HYBRID, and AVCodec.wrapper_name,
  and mark all AVCodecs accordingly.

2017-11-29 - d268094f88 - lavu 56.4.100 / 56.7.0 - stereo3d.h
  Add view field to AVStereo3D structure and AVStereo3DView enum.

2017-11-26 - 3a71bcc213 - lavc 58.6.100 - avcodec.h
  Add const to AVCodecContext.hwaccel.

2017-11-26 - 3536a3efb9 - lavc 58.5.100 - avcodec.h
  Deprecate user visibility of the AVHWAccel structure and the functions
  av_register_hwaccel() and av_hwaccel_next().

2017-11-26 - 24cc0a53e9 - lavc 58.4.100 - avcodec.h
  Add AVCodecHWConfig and avcodec_get_hw_config().

2017-11-22 - 3650cb2dfa - lavu 56.3.100 - opencl.h
  Remove experimental OpenCL API (av_opencl_*).
2017-11-22 - b25d8ef0a7 - lavu 56.2.100 - hwcontext.h hwcontext_opencl.h
  Add AV_HWDEVICE_TYPE_OPENCL and a new installed header with
  OpenCL-specific hwcontext definitions.

2017-11-22 - a050f56c09 - lavu 56.1.100 - pixfmt.h
  Add AV_PIX_FMT_OPENCL.

2017-11-11 - 48e4eda11d - lavc 58.3.100 - avcodec.h
  Add avcodec_get_hw_frames_parameters().

-------- 8< --------- FFmpeg 3.4 was cut here -------- 8< ---------

2017-09-28 - b6cf66ae1c - lavc 57.106.104 - avcodec.h
  Add AV_PKT_DATA_A53_CC packet side data, to export closed captions

2017-09-27 - 7aa6b8a68f - lavu 55.77.101 / lavu 55.31.1 - frame.h
  Allow passing the value of 0 (meaning "automatic") as the required alignment
  to av_frame_get_buffer().

2017-09-27 - 522f877086 - lavu 55.77.100 / lavu 55.31.0 - cpu.h
  Add av_cpu_max_align() for querying maximum required data alignment.

2017-09-26 - b1cf151c4d - lavc 57.106.102 - avcodec.h
  Deprecate AVCodecContext.refcounted_frames. This was useful for deprecated
  API only (avcodec_decode_video2/avcodec_decode_audio4). The new decode APIs
  (avcodec_send_packet/avcodec_receive_frame) always work with reference
  counted frames.

2017-09-21 - 6f15f1cdc8 - lavu 55.76.100 / 56.6.0 - pixdesc.h
  Add av_color_range_from_name(), av_color_primaries_from_name(),
  av_color_transfer_from_name(), av_color_space_from_name(), and
  av_chroma_location_from_name().

2017-09-13 - 82342cead1 - lavc 57.106.100 - avcodec.h
2017-09-13 - 9cb23cd9fe - lavu 55.75.100 - hwcontext.h hwcontext_drm.h
Mark Thompson's avatar
Mark Thompson committed
  Add AV_HWDEVICE_TYPE_DRM and implementation.

2017-09-08 - 5ba2aef6ec - lavfi 6.103.100 - buffersrc.h
  Add av_buffersrc_close().

2017-09-04 - 6cadbb16e9 - lavc 57.105.100 - avcodec.h
  Add AV_HWACCEL_CODEC_CAP_EXPERIMENTAL, replacing the deprecated
  HWACCEL_CODEC_CAP_EXPERIMENTAL flag.

2017-09-01 - 5d76674756 - lavf 57.81.100 - avio.h
  Add avio_read_partial().

2017-09-01 - xxxxxxx - lavf 57.80.100 / 57.11.0 - avio.h
  Add avio_context_free(). From now on it must be used for freeing AVIOContext.

2017-08-08 - 1460408703 - lavu 55.74.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_FLOAT pixel format flag.

2017-08-08 - 463b81de2b - lavu 55.72.100 - imgutils.h
  Add av_image_fill_black().

2017-08-08 - caa12027ba - lavu 55.71.100 - frame.h
  Add av_frame_apply_cropping().

2017-07-25 - 24de4fddca - lavu 55.69.100 - frame.h
  Add AV_FRAME_DATA_ICC_PROFILE side data type.

2017-06-27 - 70143a3954 - lavc 57.100.100 - avcodec.h
  DXVA2 and D3D11 hardware accelerated decoding now supports the new hwaccel API,
  which can create the decoder context and allocate hardware frame automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx. For D3D11,
  the new AV_PIX_FMT_D3D11 pixfmt must be used with the new API.

2017-06-27 - 3303511f33 - lavu 56.67.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_D3D11VA and AV_PIX_FMT_D3D11.

2017-06-24 - 09891c5391 - lavf 57.75.100 - avio.h
  Add AVIO_DATA_MARKER_FLUSH_POINT to signal preferred flush points to aviobuf.

2017-06-14 - d59c6a3aeb - lavu 55.66.100 - hwcontext.h
  av_hwframe_ctx_create_derived() now takes some AV_HWFRAME_MAP_* combination
  as its flags argument (which was previously unused).

2017-06-14 - 49ae8a5e87 - lavc 57.99.100 - avcodec.h
  Add AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH.

2017-06-14 - 0b1794a43e - lavu 55.65.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_NONE, av_hwdevice_find_type_by_name(),
  av_hwdevice_get_type_name() and av_hwdevice_iterate_types().

2017-06-14 - b22172f6f3 - lavu 55.64.100 - hwcontext.h
  Add av_hwdevice_ctx_create_derived().

2017-05-15 - 532b23f079 - lavc 57.96.100 - avcodec.h
  VideoToolbox hardware-accelerated decoding now supports the new hwaccel API,
  which can create the decoder context and allocate hardware frames automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.

2017-05-15 - 532b23f079 - lavu 57.63.100 - hwcontext.h
  Add AV_HWDEVICE_TYPE_VIDEOTOOLBOX and implementation.

2017-05-08 - f089e02fa2 - lavc 57.95.100 / 57.31.0 - avcodec.h
  Add AVCodecContext.apply_cropping to control whether cropping
  is handled by libavcodec or the caller.

2017-05-08 - a47bd5d77e - lavu 55.62.100 / 55.30.0 - frame.h
  Add AVFrame.crop_left/right/top/bottom fields for attaching cropping
  information to video frames.

  Change av_sha_update(), av_sha512_update() and av_md5_sum()/av_md5_update() length
  parameter type to size_t at next major bump.

2017-05-05 - c0f17a905f - lavc 57.94.100 - avcodec.h
  The cuvid decoders now support AVCodecContext.hw_device_ctx, which removes
  the requirement to set an incomplete AVCodecContext.hw_frames_ctx only to
  set the Cuda device handle.

2017-04-11 - 8378466507 - lavu 55.61.100 - avstring.h
  Add av_strireplace().

2016-04-06 - 157e57a181 - lavc 57.92.100 - avcodec.h
  Add AV_PKT_DATA_CONTENT_LIGHT_LEVEL packet side data.

2016-04-06 - b378f5bd64 - lavu 55.60.100 - mastering_display_metadata.h
  Add AV_FRAME_DATA_CONTENT_LIGHT_LEVEL value, av_content_light_metadata_alloc()
  and av_content_light_metadata_create_side_data() API, and AVContentLightMetadata
  type to export content light level video properties.

2017-03-31 - 9033e8723c - lavu 55.57.100 - spherical.h
  Add av_spherical_projection_name().
  Add av_spherical_from_name().

2017-03-30 - 4cda23f1f1 - lavu 55.53.100 / 55.27.0 - hwcontext.h
  Add av_hwframe_map() and associated AV_HWFRAME_MAP_* flags.
  Add av_hwframe_ctx_create_derived().

2017-03-29 - bfdcdd6d82 - lavu 55.52.100 - avutil.h
  add av_fourcc_make_string() function and av_fourcc2str() macro to replace
  av_get_codec_tag_string() from lavc.

2017-03-27 - ddef3d902f - lavf 57.68.100 - avformat.h
  Deprecate that demuxers export the stream rotation angle in AVStream.metadata
  (via an entry named "rotate"). Use av_stream_get_side_data() with
  AV_PKT_DATA_DISPLAYMATRIX instead, and read the rotation angle with
  av_display_rotation_get(). The same is done for muxing. Instead of adding a
  "rotate" entry to AVStream.metadata, AV_PKT_DATA_DISPLAYMATRIX side data has
  to be added to the AVStream.

2017-03-23 - 7e4ba776a2 - lavc 57.85.101 - avcodec.h
  vdpau hardware accelerated decoding now supports the new hwaccel API, which
  can create the decoder context and allocate hardware frame automatically.
  See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.

2017-03-23 - 156bd8278f - lavc 57.85.100 - avcodec.h
  Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at
  a later point.

2017-03-21 - fc9f14c7de - lavf 57.67.100 / 57.08.0 - avio.h
2017-03-21 - d682ae70b4 - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h
  Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major
  bump, and libavformat will behave as if it were always set.
  Deprecate av_packet_merge_side_data() and av_packet_split_side_data().

2016-03-20 - 8200b16a9c - lavu 55.50.100 / 55.21.0 - imgutils.h
  Add av_image_copy_uc_from(), a version of av_image_copy() for copying
  from GPU mapped memory.

2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
  Add AV_PIX_FMT_FLAG_BAYER pixel format flag.

2017-03-18 - 3796fb2692 - lavfi 6.77.100 - avfilter.h
  Deprecate AVFilterGraph.resample_lavr_opts
  It's never been used by avfilter nor passed to anything.

2017-02-10 - 1b7ffddb3a - lavu 55.48.100 / 55.33.0 - spherical.h
  Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(),
  and projection-specific properties (bound_left, bound_top, bound_right,
  bound_bottom, padding) to AVSphericalMapping.

2017-03-02 - ade7c1a232 - lavc 57.81.104 - videotoolbox.h
  AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
  native decoder format. (The default value is not changed.)

2017-03-02 - 554bc4eea8 - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
  Remove requirement to use AVOption or accessors to access certain fields
  in AVFrame, AVCodecContext, and AVFormatContext that were previously
  documented as "no direct access" allowed.

2017-02-13 - c1a5fca06f - lavc 57.80.100 - avcodec.h
  Add AVCodecContext.hw_device_ctx.

2017-02-11 - e3af49b14b - lavu 55.47.100 - frame.h
wm4's avatar
wm4 committed
  Add AVFrame.opaque_ref.

2017-01-31 - 2eab48177d - lavu 55.46.100 / 55.20.0 - cpu.h
2017-01-24 - c4618f842a - lavu 55.45.100 - channel_layout.h
  Add av_get_extended_channel_layout()

2017-01-22 - 76c5a69e26 - lavu 55.44.100 - lfg.h
  Add av_lfg_init_from_data().

2017-01-17 - 2a4a8653b6 - lavc 57.74.100 - vaapi.h
  Deprecate struct vaapi_context and the vaapi.h installed header.
  Callers should set AVCodecContext.hw_frames_ctx instead.

2017-01-12 - dbe9dbed31 - lavfi 6.69.100 - buffersink.h
  Add av_buffersink_get_*() functions.

2017-01-06 - 9488032e10 - lavf 57.62.100 - avio.h
  Add avio_get_dyn_buf()

2016-12-10 - f542b152aa - lavu 55.43.100 - imgutils.h
  Add av_image_check_size2()

2016-12-07 - e7a6f8c972 - lavc 57.67.100 / 57.29.0 - avcodec.h
  Add AV_PKT_DATA_SPHERICAL packet side data to export AVSphericalMapping
  information from containers.

2016-12-07 - 8f58ecc344 - lavu 55.42.100 / 55.30.0 - spherical.h
  Add AV_FRAME_DATA_SPHERICAL value, av_spherical_alloc() API and
  AVSphericalMapping type to export and describe spherical video properties.

2016-11-18 - 2ab50647ff - lavf 57.58.100 - avformat.h
  Add av_stream_add_side_data().
2016-11-13 - 775a8477b7 - lavu 55.39.100 - hwcontext_vaapi.h
  Add AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE.

2016-11-13 - a8d51bb424 - lavu 55.38.100 - hwcontext_vaapi.h
  Add driver quirks field to VAAPI-specific hwdevice and enum with
  members AV_VAAPI_DRIVER_QUIRK_* to represent its values.

2016-11-10 - 638b216d4f - lavu 55.36.100 - pixfmt.h
Luca Barbato's avatar
Luca Barbato committed
  Add AV_PIX_FMT_GRAY12(LE/BE).

-------- 8< --------- FFmpeg 3.2 was cut here -------- 8< ---------

2016-10-24 - 73ead47 - lavf 57.55.100 - avformat.h
  Add AV_DISPOSITION_TIMED_THUMBNAILS

2016-10-24 - a246fef - lavf 57.54.100 - avformat.h
  Add avformat_init_output() and AVSTREAM_INIT_IN_ macros

2016-10-22 - f5495c9 - lavu 55.33.100 - avassert.h
  Add av_assert0_fpu() / av_assert2_fpu()

2016-10-07 - 3f9137c / 32c8359 - lavc 57.61.100 / 57.24.0 - avcodec.h
  Decoders now export the frame timestamp as AVFrame.pts. It was
  previously exported as AVFrame.pkt_pts, which is now deprecated.

  Note: When decoding, AVFrame.pts uses the stream/packet timebase,
  and not the codec timebase.

2016-09-28 - eba0414 - lavu 55.32.100 / 55.16.0 - hwcontext.h hwcontext_qsv.h
  Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific
  hwcontext definitions.

2016-09-26 - 32c25f0 - lavc 57.59.100 / 57.23.0 - avcodec.h
  AVCodecContext.hw_frames_ctx now may be used by decoders.

2016-09-27 - f0b6f72 - lavf 57.51.100 - avformat.h
  Add av_stream_get_codec_timebase()

2016-09-27 - 23c0779 - lswr 2.2.100 - swresample.h
  Add swr_build_matrix().

2016-09-23 - 30d3e36 - lavc 57.58.100 - avcodec.h
  Add AV_CODEC_CAP_AVOID_PROBING codec capability flag.

2016-09-14 - ae1dd0c - lavf 57.49.100 - avformat.h
  Add avformat_transfer_internal_stream_timing_info helper to help with stream
  copy.

2016-08-29 - 4493390 - lavfi 6.58.100 - avfilter.h
  Add AVFilterContext.nb_threads.

2016-08-15 - c3c4c72 - lavc 57.53.100 - avcodec.h
  Add trailing_padding to AVCodecContext to match the corresponding
  field in AVCodecParameters.

2016-08-15 - b746ed7 - lavc 57.52.100 - avcodec.h
  Add a new API for chained BSF filters and passthrough (null) BSF --
  av_bsf_list_alloc(), av_bsf_list_free(), av_bsf_list_append(),
  av_bsf_list_append2(), av_bsf_list_finalize(), av_bsf_list_parse_str()
  and av_bsf_get_null_filter().

2016-08-04 - 82a33c8 - lavf 57.46.100 - avformat.h
2016-07-09 - 775389f / 90f469a - lavc 57.50.100 / 57.20.0 - avcodec.h
  Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH.

2016-06-30 - c1c7e0ab - lavf 57.41.100 - avformat.h
  Moved codecpar field from AVStream to the end of the struct, so that
  the following private fields are in the same location as in FFmpeg 3.0 (lavf 57.25.100).

2016-06-30 - 042fb69d - lavu 55.28.100 - frame.h
  Moved hw_frames_ctx field from AVFrame to the end of the struct, so that
  the following private fields are in the same location as in FFmpeg 3.0 (lavu 55.17.103).

2016-06-29 - 1a751455 - lavfi 6.47.100 - avfilter.h
  Fix accidental ABI breakage in AVFilterContext.
  ABI was broken in 8688d3a, lavfi 6.42.100 and released as ffmpeg 3.1.

  Because of this, ffmpeg and ffplay built against lavfi>=6.42.100 will not be
  compatible with lavfi>=6.47.100. Potentially also affects other users of
  libavfilter if they are using one of the affected fields.

-------- 8< --------- FFmpeg 3.1 was cut here -------- 8< ---------

2016-06-26 - 481f320 / 1c9e861 - lavu 55.27.100 / 55.13.0 - hwcontext.h
  Add av_hwdevice_ctx_create().

2016-06-26 - b95534b / e47b8bb - lavc 57.48.101 / 57.19.1 - avcodec.h
  Adjust values for JPEG 2000 profiles.

2016-06-23 - 5d75e46 / db7968b - lavf 57.40.100 / 57.7.0 - avio.h
  Add AVIODataMarkerType, write_data_type, ignore_boundary_point and
  avio_write_marker.

2016-06-23 - abb3cc4 / 0c4468d - lavu 55.26.100 / 55.12.0 - opt.h
  Add av_stereo3d_type_name() and av_stereo3d_from_name().

2016-06-22 - 3689efe / c46db38 - lavu 55.25.100 / 55.11.0 - hwcontext_dxva2.h
  Add new installed header with DXVA2-specific hwcontext definitions.

2016-04-27 - fb91871 - lavu 55.23.100 - log.h
  Add a new function av_log_format_line2() which returns number of bytes
  written to the target buffer.

2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
  Add a new audio/video encoding and decoding API with decoupled input
  and output -- avcodec_send_packet(), avcodec_receive_frame(),
  avcodec_send_frame() and avcodec_receive_packet().

2016-04-17 - af9cac1 / 33d1898 - lavc 57.35.100 / 57.15.0 - avcodec.h
  Add a new bitstream filtering API working with AVPackets.
  Deprecate the old bitstream filtering API.
2016-04-14 - 8688d3a / 07a844f - lavfi 6.42.100 / 6.3.0 - avfilter.h
  Add AVFilterContext.hw_device_ctx.

2016-04-14 - 28abb21 / 551c677 - lavu 55.22.100 / 55.9.0 - hwcontext_vaapi.h
  Add new installed header with VAAPI-specific hwcontext definitions.

2016-04-14 - afccfaf / b1f01e8 - lavu 55.21.100 / 55.7.0 - hwcontext.h
  Add AVHWFramesConstraints and associated API.

2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
  Add AVStream.codecpar, deprecate AVStream.codec.

2016-04-02 - e8a9b64 - lavu 55.20.100 - base64.h
  Add AV_BASE64_DECODE_SIZE(x) macro.

2016-xx-xx - lavc 57.33.100 / 57.14.0 - avcodec.h
  f9b1cf1 / 998e1b8 - Add AVCodecParameters and its related API.
  e6053b3 / a806834 - Add av_get_audio_frame_duration2().
2016-03-11 - 6d8ab35 - lavf/lavc 57.28.101
  Add requirement to bitstream filtering API that returned packets with
  size == 0 and side_data_elems == 0 are to be skipped by the caller.

2016-03-04 - 9362973 - lavf 57.28.100
  Add protocol blacklisting API

2016-02-28 - 4dd4d53 - lavc 57.27.101
  Validate AVFrame returned by get_buffer2 to have required
  planes not NULL and unused planes set to NULL as crashes
  and buffer overflow are possible with certain streams if
  that is not the case.

2016-02-26 - 30e7685 - lavc 57.27.100 - avcodec.h