Jittr is a proprietary streaming format. A MS Windows browser plugin, known as the Vusion WARP Player, can be downloaded from the company website.
Streaming is achieved using AVI over HTTP. Demonstration streams (available on the company website) specify the JTV1 video fourcc. It has been suggested that the streams contains encrypted VP7 video and Vorbis audio.
MIME Types associated with Vusion WARP Player:
Related discussion: http://forum.doom9.org/showthread.php?t=139315