Tools to process multimedia content such as audio, video, subtitles...
...Provides means to alter decoded audio and video through a directed graph of connected filters. Provides an abstraction to access capture and playback devices. Implements audio mixing and resampling routines. Implements color conversion and scaling routines. FFmpeg is a command-line toolbox to manipulate, convert and stream multimedia content. ffplay is a minimalistic multimedia player. FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL.
...It uses mplayer and mencoder to transcode a video to another format. Features: automatic bitrate calculation based on desired target size; automatic crop detection; mp3 audio with resampling;