Great news!
The wonderful developers at Xiph have released a new version of Xiph QT Components which has support for Theora! Metavid encodes our archived content using Theora, and we’re very excited that there is now a bridge between our project and the applications and creative development frameworks that depend on Quicktime such as Processing, max/msp/jitter, Final Cut & whathaveyou. If you use any of these tools, consider this an explicit invitation to pull clips from metavid into your app of choice and remix, remodulate, resynthesize to your hearts’ content.
Feel free to use the comments thread on this post (or the wiki) to post any technical(or aesthetic) issues that crop up. (thanks Arek!)
Link to quicktime components.