多媒體處理工具 FFmpeg 0.8.4/0.7.5 發布

FFmpeg是一套可以用來記錄、轉換數字音頻、視頻，并能將其轉化為流的開源計算機程序。它包括了目前領先的音/視頻編碼庫libavcodec。 FFmpeg是在Linux下開發出來的，但它可以在包括Windows在內的大多數操作系統中編譯。這個項目是由Fabrice Bellard發起的，現在由Michael Niedermayer主持。可以輕易地實現多種視頻格式之間的相互轉換，例如可以將攝錄下的視頻avi等轉成現在視頻網站所采用的flv格式。
項目地址： http://ffmpeg.org/

ffmpeg 同時發布了兩個更新版本，分別是 0.8.4 和 0.7.5 ，這兩個版本主要都是bug修復。而 0.8.4 版本兼容 0.6 的 ABI 和 API。

FFmpeg Download and Source Code Repository Access

Getting FFmpeg

FFmpeg has always been a very experimental and developer-driven project. It is a key component in many multimedia projects and has new features added constantly. Development branch snapshots work really well 99% of the time so people are not afraid to use them.

FFmpeg Git

FFmpeg is developed with Git. Given the decentralized nature of Git, multiple repositories from developers and groups of developers are available.

You can retrieve the source code through the standard Git client by using the command:

git clone CLONE_URL ffmpeg

where CLONE_URL is one of the Git clone URLs listed in the table below.

Clone URL	Browse	Snapshot	Admin	Commiters	Description
git://git.videolan.org/ffmpeg.git	Browse	Snapshot	Michael Niedermayer	All FFmpeg developers	Main FFmpeg / libavcodec / libavformat / libavfilter git repository, all work is merged in here, and it is the recommended repository for users and developers to use.
git://ffmpeg.org/ffmpeg-web	-	-	Michael Niedermayer	All FFmpeg developers	Main ffmpeg.org website repository
Other Repositories
https://github.com/FFmpeg/FFmpeg git://github.com/FFmpeg/FFmpeg.git	Browse	Snapshot	-	-	Mirror of the main repository
git://git.libav.org/libav.git	Browse	Snapshot	?	8 developers
git://gitorious.org/~astrange/ffmpeg/ffmpeg-mt.git	Browse	Snapshot	Alexander Strange	Alexander Strange	Multithreaded decoding
git://git.khirnov.net/git/libav	Browse	-	Anton Khirnov	Anton Khirnov	Personal repository with works in progress
git://gitorious.org/~flameeyes/ffmpeg/flameeyes-ffmpeg.git	Browse	Snapshot	Diego E. Pettenò	Diego E. Pettenò	Personal repository with works in progress
git://github.com/lu-zero/libav.git	Browse	Snapshot	Luca Barbato	Luca Barbato	Personal repository with works in progress and experiments
git://git.mansr.com/libav.git	Browse	-	Mans Rullgard	Mans Rullgard	Personal repository with works in progress
git://github.com/justinruggles/Libav	Browse	-	Justin Ruggles	Justin Ruggles	Personal repository with works in progress
git@gitorious.org:~saste/ffmpeg/sastes-ffmpeg.git	Browse	-	Stefano Sabatini	Stefano Sabatini	Personal repository with works in progress

FFmpeg Repository Snapshots

For the main ffmpeg repository you can also directly download thesource snapshot that we generate each night instead of grabbing a source snapshot from the gitweb URL. This is slightly preferred since it reduces the load on our server.

Alternatively, if you cannot access Git directly or wish to speed up the cloning and reduce the bandwidth usage, we also offer a completegit snapshot tarball that comes with git metadata and version history to bootstrap your local repository.

FFmpeg Windows Builds

FFmpeg Windows Builds are available athttp://ffmpeg.zeranoe.com/builds/

FFmpeg SVN

FFmpeg development has moved to a Git repository, and the SVN repository is no longer updated. The last revision committed to SVN was r26402 on 2011-01-19. The SVN repository may be removed in a near future, so you're recommended to use the Git repository instead.

In order to use the standard SVN client to check out the source code:

svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg

If you cannot access the repository, you are being firewalled somewhere. Our Subversion setup does not work over HTTP/HTTPS, nor will it in the future. There is no point in asking for it, the decision is final.

FFmpeg Releases

At irregular intervals FFmpeg makes releases that represent snapshots of FFmpeg at the moment the release branch was cut. Between major releases point releases will appear that add important bug fixes but no new features. Note that these releases are intended for distributors and system integrators. Users that wish to compile from source themselves are strongly encouraged to consider using the development branch (see above), this is the only version on which FFmpeg developers actively work. The release branches only cherry pick selected changes from the development branch, which therefore receives much more and much faster bug fixes such as additional features and security patches.

FFmpeg 0.8.4 "Love"

0.8.4 was released on 2011-09-22. It is the latest stable FFmpeg release from the 0.8 release branch, which was cut from master on 2011-06-21. Amongst lots of other changes, it includes all changes from ffmpeg-mt, libav master of 2011-06-21, libav 0.7.1 as of 2011-09-21.

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Changelog

FFmpeg 0.7.5 "Peace"

0.7.5 was released on 2011-09-22. It contains almost all features and bugfixes of 0.8.4 while being compatible with the 0.6 ABI and API.

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Changelog

FFmpeg 0.6.3 "Works with HTML5"

0.6.3 appeared on 2011-04-26. It is the latest point release from the 0.6 release branch, which was cut on 2010-05-04.

This release is not actively maintained and thus we discourage its use. If you want to maintain this old version, contact us.

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Changelog