mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-01-29 22:00:58 +02:00
1d333c1547
There are seven MJPEG-tables, five small (1x12, 4x17) and two not small (2x162). These are all avpriv, despite this not being worthwhile due to the overhead of exporting a symbol: The total overhead for each symbol consists of two entries in .dynsym (24B each), one entry in the importing library's .rela.dyn (24B) and one in .got (8B) as well as 2x2B for symbol versions and 4B for symbol hashes in the exporting library; in addition to that, the name of the symbol is included in both exporting and importing libraries, using 2x210 bytes in this case. (The above numbers are for a x64 Elf/Linux/GNU system. Other platforms will give different numbers.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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.