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Andreas Rheinhardt a31f68fb44 avformat/av1: Avoid allocation for small headers 
By using avio_get_dyn_buf() + ffio_free_dyn_buf() instead of
avio_close_dyn_buf() + av_free() one can avoid an allocation + copy for
small headers. Furthermore, it simplifies freeing.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
2019-11-28 15:20:37 -03:00
compat
doc doc/encoder: add the missing qsv encoders 2019-11-28 23:30:31 +08:00
ffbuild
fftools fftools/ffmpeg_opt: Fix mixed declarations and code 2019-11-06 20:38:03 +01:00
libavcodec avcodec/vp8: fix multiple ff_thread_finish_setup() calls 2019-11-28 18:44:01 +01:00
libavdevice avdevice/decklink: add option to drop frames till timecode is seen 2019-11-18 10:01:03 +05:30
libavfilter avfilter/vf_libvmaf: Check for av_frame_alloc failure 2019-11-28 18:44:01 +01:00
libavformat avformat/av1: Avoid allocation for small headers 2019-11-28 15:20:37 -03:00
libavresample
libavutil avutil/hwcontext_cuda: allow using primary CUDA device context 2019-11-26 16:24:40 +01:00
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libswresample
libswscale swscale/swscale_unscaled: fix gbrap10be md5 different on big endian system 2019-11-01 14:43:16 +01:00
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tests fate/cbs: add initial AV1 tests 2019-11-19 14:49:03 -03:00
tools tools/target_dec_fuzzer: Adjust threshold for VP9 2019-11-24 22:56:32 +01:00
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Changelog avcodec: add mvha video decoder 2019-11-27 23:54:20 +01:00
configure avcodec: add mvha video decoder 2019-11-27 23:54:20 +01:00
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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.