Are you looking for free video converter software for new WebM (vp8) format videos? Miro Video Converter is an open source video converter.
It can be used to convert any video into WebM (vp8) and other video formats like MP4 and Ogg Theora on Windows or MAC systems. It has dead simple interface with “drag and drop” support.
After install, launch the program and drag video files into program window. Select the output video from the drop down at the bottom. This converter will convert selected video into either of WebM (vp8), MP4, Ogg Theora format for Android, iPhone, Droid, HTC Hero and more.