MediaCoder is a universal audio/video batch transcoder. It supports numerous audio and video formats directly, with no dependencies on any media players, codecs or components installed on the system. It also supports device-specific profiles (mobile phone, PDA, MP4 player, PSP, VCD/DVD player), and is able to extract audio tracks from video clips.
On video side, MEncoder is used as back-end, which provides support for nearly all known video compression and container formats as well as rich and useful video filtering features (e.g. post-processing, 3D de-noise).
On audio side, MPlayer and Winamp input plugins used as decoders, various encoders integrated, MediaCoder can simply batch transcode among any known audio formats, with tags transferred, file names generated, and even performing audio filtering (e.g. resample, normalize) on the fly.