mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-03-03 14:32:16 +02:00
4cc367bf9d
constraint_set1_flag should be set for constrained baseline and main profiles, because the stream conforms to main profile. constraint_set3_flag should be set for high profile when the stream is intra-only. constraint_set4_flag should always be set for main and high profiles because interlaced encoding is not supported. constraint_set5_flag should be set for main and high profiles when B-frames are not used. Also fix the setting of max_num_ref_frames - use the gop_size value to check for intra-only rather than the constraint flag (which is not necessarily set).
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.
- 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.