Have you tried watching the video at a different resolution? I’ve run across channels where every single video @720p will restart like you describe, but play fine in 480p (or 360p, if you’re desperate.)
I believe it happens because the ‘play’ is faster than the loading. Try pausing the play as soon as it starts and let the loading progress bar get out there a bit before resuming.
Nope. Does it when the leading grey bar is well ahead of the play bar. Other video sites don’t do this to me: only Youtube, on at least two different computers.
Try going here, and click on the bottom to “Join the HTML5 trial.” That will use HTML5 instead of Flash for most videos. If that fixes it, it would seem something related to your Flash is screwy.
And it’s still doing it. Googling it tells me I’m not the only one, but I don’t see any solutions. Do you know how frustrating it is to be 20 minutes into a video and have it restart automatically?
EDT: Firefox browser, laptop and desktop. Everything is updated, browser and Flash.
A possible workaround, if you’re using Firefox, is to Download the Youtube; then watch it later with, e.g., KMPlayer. Slightly less convenient, but it does leave you with the video on your hard disk to watch how or as often as you like. (Some boring Youtubes are best watched at 120% speed , which KMPlayer can do, but not AFAIK Youtube.)