I have a strange problem with youtube on the one of my systems. This is the same for FF 38.8.0 and FF 45.9.0.
On youtube I can see load bar (line) at the bottom of video frame (with loading progress), small frames on load bar whem I try move forward. But on the video frame, the "waiting ring" turns constantly and there is no image.
On page
https://www.youtube.com/html5 next items available with FF 3.8.0:
HTMLVideoElement, H.264 and WebM VP8.
with FF 45.9.0 all items available.
It's just like on my other system, where everything works fine.
All necessary components from the repository, including ffmpeg, have been updated. What could be the problem?