PortableApps.com
Media coder is an awesome video and audio converter that is almost as good as Winavi. It is open source. http://mediacoder.sourceforge.net/
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PortableApps.com - Portable software for USB, portable, and cloud drives
its already in the beta testing forums here. I think it's slightly outdated, but an update should be coming soon.

In the future, please use the search feature on this site. You'll often find your answer more quickly than it will take somebody to respond.

we need portable SUPER v 2010. Please add it.

SUPER is an easy-to-use Multimedia Encoder and Player, requiring only one simple click.

If you need a simple, yet very efficient tool to convert or play any Multimedia file, without reading manuals or spending long hours training, then SUPER is all you need.

SUPER supports any Multimedia file format. SUPER plays files that cannot be played with WMP or even other libavcodec-based players like MPC and VLC. SUPER also plays and saves Internet Media Streams of different protocols (mms://, rtsp://, and http://).

SUPER is the fastest and simplest tool to encode full-length movies to any other format without any time or function limitation. It does NOT require any additional external codecs. They're all built in!