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The avpriv_packet_list_put/get/free() functions and the PacketList type were implemented in libavcodec and exported via the avpriv_ mechanism solely so that libavformat (and decklink in libavdevice) could use them; libavcodec itself has no users of them. Exporting them across the library boundary has the usual drawbacks for shared builds (export/import overhead and having to keep them around for ABI stability even once unneeded). Move the implementation and the PacketList/PacketListEntry types to libavformat and rename the functions to ff_packet_list_*(). libavformat is the primary user and compiles the new packet_list.c directly; decklink, the only libavdevice user, gets a private copy for shared builds via the SHLIBOBJS scheme already used for reverse.o and ccfifo.o (static builds resolve the symbols from libavformat). AVPACKET_IS_EMPTY() and ff_side_data_set_prft() remain in libavcodec/packet_internal.h as they are libavcodec-internal.
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.