FFmpeg是一个开源免费跨平台的视频和音频流方案，属于自由软件，采用LGPL或GPL许可证（依据你选择的组件）。它提供了录制、转换以及流化音视频的完整解决方案。它包含了非常先进的音频/视频编解码库libavcodec，为了保证高可移植性和编解码质量，libavcodec里很多codec都是从头开发的。-1.1.1 was released on 2013-01-20. It is the latest stable FFmpeg release from the 1.1 release branch, which was cut from master on 2013-01-06. Amongst lots of other changes, it includes all changes from ffmpeg-mt, libav master of 2013-01-06, libav 9.1 as of 2013-01-19.