I'm using the latest Firefox without Adobe Flash (so HTML5 videos) on YouTube. YouTube videos almost always start kind of black, parts of the image are barely visible.
Why do I have to wait a few seconds for the image to "stabilize" and be able to watch the video?
Is there something I can do to have the picture/video load instantly?
Here is what is happening in two pictures (timeline is wrong, I just clicked back to refresh the picture):