MediaCoder - more than a universal audio/video transcoder - MediaCoder official website
MediaCoder is a free universal media transcoder since 2005. It integrates most popular audio/video codecs and tools in an elegant and transparent manner into an all-in-one transcoding solution. With a flexible and extendable architecture, latest codecs and tools are updated added in constantly. MediaCoder intends to be the swiss army knife for media transcoding in all time.
Features In Brief
Converting between most popular audio and video formats
Multi-threaded transcoding and job-level parallelization
Transcoding with high performance and high quality
Flexible control over transcoding parameters
Simplified UI for popular mobile devices (PSP, iPhone/iPod etc)
Fully standalone, no dependancy on system codecs/splitters
Hardware encoding acceleration (nVidia CUDA & Intel Media SDK)
Typical Applications
Improving compression / reducing size for audio/video files
Converting media content for playback on multimedia devices
Converting media content for online publication or broadcasting
Extracting audio track from video files
Ripping audio/video discs
Fixing corrupted or partial downloaded video files
MediaCoder is Audio/Video
There's an Audio only version called AudioCoder.