大名鼎鼎的ffmpeg,多媒体中的极品，下载后请改成tar.bz2截压-Famous ffmpeg, multimedia in Need, download tar.bz2 changed after cut-off pressure

ffmpeg 是一个开源、功能强大的多媒体处理软件，可以实现对音频流、视频流的录制和转换。-ffmpeg is an open source, powerful multimedia processing software, which enables audio streaming, video streaming recording and conversion.