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Andreas Rheinhardt 7539a01bb0 avcodec/videotoolboxenc: Avoid copying data, allow user-supplied buffers 
Here the packet size is known before allocating the packet because
the encoder provides said information (and works with internal buffers
itself), so one use this information to avoid the implicit use of another
intermediate buffer for the packet data; and by switching to
ff_get_encode_buffer() one can also allow user-supplied buffers.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: Rick Kern <kernrj@gmail.com>
2021-05-06 00:29:36 -04:00
compat atomics: Fix the win32 atomic_exchange function 2021-04-04 11:06:08 +03:00
doc lavfi/dnn_classify: add filter dnn_classify for classification based on detection bounding boxes 2021-05-06 10:50:44 +08:00
ffbuild libavresample: Remove deprecated library 2021-04-27 10:43:13 -03:00
fftools ffprobe: add option to control optional fields display 2021-05-05 15:04:54 +05:30
libavcodec avcodec/videotoolboxenc: Avoid copying data, allow user-supplied buffers 2021-05-06 00:29:36 -04:00
libavdevice avdevice: Constify all devices 2021-04-27 11:48:05 -03:00
libavfilter lavfi/dnn_classify: add filter dnn_classify for classification based on detection bounding boxes 2021-05-06 10:50:44 +08:00
libavformat avformat/rpl: cosmetics 2021-05-06 11:06:43 +10:00
libavutil avutil/mem: Also poison new av_realloc-allocated blocks 2021-04-30 10:24:32 +02:00
libpostproc Bump major versions of all libraries. 2021-04-27 11:48:05 -03:00
libswresample Bump major versions of all libraries. 2021-04-27 11:48:05 -03:00
libswscale Bump major versions of all libraries. 2021-04-27 11:48:05 -03:00
presets
tests tests/image: remove colorspace conversion from jpegls tests 2021-05-03 18:32:01 -03:00
tools avfilter/dnn/dnn_backend_tf: simplify the code with ff_hex_to_data 2021-04-29 20:02:29 +08:00
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.mailmap mailmap: add entry for myself 2021-03-09 02:09:55 +00:00
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Changelog avformat/westwoodaudenc: Adds muxer for Westwood AUD format. 2021-04-26 19:56:33 +10:00
configure lavfi/dnn_classify: add filter dnn_classify for classification based on detection bounding boxes 2021-05-06 10:50:44 +08:00
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MAINTAINERS MAINTAINERS: add myself as adpcm maintainer 2021-03-25 12:51:10 +10:00
Makefile libavresample: Remove deprecated library 2021-04-27 10:43:13 -03:00
README.md
RELEASE Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.