f5d03b972c
Current callstack looks like this: * ifilter_bind_ist() (filter) calls ist_filter_add() (demuxer); * ist_filter_add() opens the decoder, and then calls dec_add_filter() (decoder); * dec_add_filter() calls ifilter_parameters_from_dec() (i.e. back into the filtering code) in order to give post-avcodec_open2() parameters to the filter. This is unnecessarily complicated. Pass the parameters as follows instead: * dec_init() (which opens the decoder) returns post-avcodec_open2() parameters to its caller (i.e. the demuxer) in a parameter-only AVFrame * the demuxer passes these parameters to the filter in InputFilterOptions, together with other filter options
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 means to alter decoded audio and video through a directed graph of connected 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.