Comment by wreegab

Re. author's "I noticed that Youtube would not provide the HTML5 player to Firefox even if requested"...

Tried to repro, Linux Mint 16, Firefox 28:

1) Go to http://www.youtube.com/watch?v=UloBiVGtAP4

2) Flash-based video served

3) Go to http://www.youtube.com/html5

4) Click "Request the HTML5 player"

5) Go to http://www.youtube.com/watch?v=UloBiVGtAP4

6) HTML5-based video served

Edit: using a less annoying video as test case.