[jebblue]

FYI, on Ubuntu 12.04 using Google Chrome, the Vimeo player kept going black after starting the video, I had to keep making small movements with the mouse to keep the video showing.

It's almost like a div is made black and floated over the top of it if that's possible.

[MaxGabriel]

I had the same problem on OS X 10.8.5 running Chrome 30.0.1599.69. When I clicked the fullscreen button, the black went away, but it was only showing a static image of the program (I did have audio though).