Up until now, the Sega FILM muxer would store some information about each packet in a linked list. When writing the trailer, the information in said linked list would be used to write a table in the file header. Each entry in said table is 16 bytes long, but each entry of the linked list is 32 bytes long (assuming 64 bit pointer and no padding). Therefore it makes sense to remove the linked list and write the array entries directly into a dynamic buffer while writing the packet (this is possible because the table entries don't depend on any information not available when writing the packet (the offset is not relative to the beginning of the file, but to the end of the table). This also simplifies writing the array at the end (there is no need to traverse a linked list). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
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FFmpeg README
FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.
Libraries
libavcodec
provides implementation of a wider range of codecs.libavformat
implements streaming protocols, container formats and basic I/O access.libavutil
includes hashers, decompressors and miscellaneous utility functions.libavfilter
provides a mean to alter decoded Audio and Video through chain of filters.libavdevice
provides an abstraction to access capture and playback devices.libswresample
implements audio mixing and resampling routines.libswscale
implements 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
,ismindex
andqt-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.
Description
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