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ae5046e492
Currently, AVHWAccels are looked up using a (codec_id, pixfmt) tuple. This means it's impossible to have 2 decoders for the same codec and using the same opaque hardware pixel format. This breaks merging Libav's CUVID hwaccel. FFmpeg has its own CUVID support, but it's a full stream decoder, using NVIDIA's codec parser. The Libav one is a true hwaccel, which is based on the builtin software decoders. Fix this by introducing another field to disambiguate AVHWAccels, and use it for our CUVID decoders. FF_CODEC_CAP_HWACCEL_REQUIRE_CLASS makes this mechanism backwards compatible and optional.
FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodecprovides implementation of a wider range of codecs.libavformatimplements streaming protocols, container formats and basic I/O access.libavutilincludes hashers, decompressors and miscellaneous utility functions.libavfilterprovides a mean to alter decoded Audio and Video through chain of filters.libavdeviceprovides an abstraction to access capture and playback devices.libswresampleimplements audio mixing and resampling routines.libswscaleimplements 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.
- ffserver is a multimedia streaming server for live broadcasts.
- Additional small tools such as
aviocat,ismindexandqt-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.