since the last major version increase or the API was added.
The last version increases were:
-libavcodec: 2017-10-21
-libavdevice: 2017-10-21
-libavfilter: 2017-10-21
-libavformat: 2017-10-21
-libavresample: 2017-10-21
-libpostproc: 2017-10-21
-libswresample: 2017-10-21
-libswscale: 2017-10-21
-libavutil: 2017-10-21
+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
API changes, most recent first:
-2021-03-19 - xxxxxxxxxx - lavf 58.75.100 - avformat.h
+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
+ Add AV_FRAME_DATA_DETECTION_BBOXES
+
+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-xx - xxxxxxxxxx - lavc 58.133.100 - codec.h
+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-xx - xxxxxxxxxx - lavc 58.132.100 - codec.h
+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 - xxxxxxxxxx - lavc 58.131.100 - avcodec.h codec.h
+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 - xxxxxxxxxx - lavf 58.72.100 - avformat.h
+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 - xxxxxxxxxx - lavc 58.130.100 - packet.h
+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 - xxxxxxxxxx - lavu 56.68.100 - buffer.h frame.h
+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.