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363f04fee9
Probe Accept-Ranges/Content-Range/Content-Encoding to determine seekability and total size, issue ranged requests via CURLOPT_RANGE, implement url_seek (including AVSEEK_SIZE) as a reconnect at the new offset, and resume seekable transfers from the next missing byte after a recoverable error. Note that we prefer the compression over seekability, as servers are unlikely to compress media files in practice, as this would be huge performance cost for zero gain. However downloading text playlists benefits a lot from compression. YouTube for example can serve text files that have 30MB+ which is huge bandwidth usage when not compressed. Signed-off-by: Kacper Michajłow <kasper93@gmail.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.