It's worth noting that Chrome Remote Desktop uses VP8 (which is the video codec used in WebM):

http://googleblog.blogspot.com/2012/05/next-step-in-chrome-o...

If you're having performance issues with it, you just have the video codec tuned wrong.

we did some testing using compressed video, but ended up finding single frames to be more performant. also, the setup can handle much higher framerate and quality but we've kept things fairly lean for the demo :) can easily handle 15fps w/ high quality images. thanks again for the questions and comments.