Youtube videos are not playing back

Do you have Flash Player installed?

I've having the same problem. Youtube plays in Firefox but off and on in Safari. If they don't fix it soon, I'm making Firefox my default browser. Ick.

I'm having similar problems to you all. Chrome and Firefox will play YT videos back perfectly. But for some reason certain users' entire channels that were working fine in Safari on Thhursday 1st Nov 2012 had stopped working by the next day! After upgrading Flash and resetting the cache etc it was a bit better but still some not working. I then downloaded the 6.0.2 update (again after a bit of aggro as some error message kept popping up, then after a while it worked ok). Now still some videos refuse to play in Safari. Latest FF browser seems OK and not too slow. I have always liked Safari though and am a bit annoyed that I've had to to make FF my default as it's a bit ugly. It may be a YT problem rather than Apple. Once upon a time in the hazy crazy days of Tiger and Leopard I had no Apple problems. Now lots of very minor but basic issues keep popping up!

This is not a random issue, phantom, and the boards are loaded with complaints. Many possible fixes like the few you mention, but almost no real solutions. Of course, if YT videos work on FF and Chrome, then the issue lies with Safari.

go to this site http://www.youtube.com/html5. your probably on the html 5 trial, remove yourself from it and try watching some videos. good luck!

Yes, Saiyonlord, that works! So it is kind of a YouTube problem in that the problem lies with their utilisation of html5 on Safari. I wonder how long it will take them to fix it. 😕 Thanks for your help!

I am not enrolled in the HTML5 trial.... And i still have that f*cking problem so it has to be flash player :/