Had some trouble with my FF33 playing 60fps stuff but now I got it working.
Go to '
about:config'
Look for '
media.mediasource.enabled' and set it on '
true'. (just doubleclick 'false')
Now go to '
https://www.youtube.com/html5' and
enable HTML5 Player, if not allready done.
Search for a clip with 60fps, set it to 720p60HD and you're done.
edit:no beer involved this time...
