TorBrowser does no longer support HTML5 video.
The latest TorBrowser no longer supports the HTML5 video format.
You can reproduce this problem as follows:
Go on youtube.com/html5 and activate the HTML5 player. Choose a video and try to watch it. It fails. The video does not load and the error message states something like "Your browser does not support HTML5".
Please check this and try to provide remedy. It is very crucial for lots of people to watch videos on YouTube anonymously.
Thank you very much!