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I've installed Ubuntu with Wubi, on my WinXP system. I cannot seem to get YouTube videos to play in HD (using Firefox 6) without crashing.

I tried gnash first, but that did not seem to be quite functional. I could not jump ahead in the video, control sound, etc. So I decided to try out Adobe's flash. It works fine, except for HD video, where it plays for a little while, then freezes the video (and Firefox) while the audio keeps running, then after a while, the flash player crashes and I get the sad face "Flash player has crashed // Send error report".

When running Windows I have no problem playing YouTube videos. At least not most of the time..

I have searched around for an answer, but not found anything that works. I have for example disabled hardware acceleration, and tried using https://www.youtube.com. Using HTML5 on YouTube seems to work, but that does not seem to be available for all videos.

I don't know what specs are important, so please ask if you need something else.

If anyone has ideas, alternative flash players, workarounds, or places to look for possible answers/support, I'd be very grateful.

Update:

Specs as requested in comment. Running Windows XP/Ubuntu 11.04 on a laptop (3-4 years old):

INTEL CORE2DUO T9300 2.5GHZ 800/6M BOX
2 x Kingston 2GB 667MHZ DDR2 NON-ECC CL5 SODIMM

CHIPSET Intel GM965
PROCESSOR   Intel® Core 2 
GRAPHICS CARD   NVIDIA GeForce Go 8600M GT
GRAPHICS CARD MEMORY (MAX)  512 MB

Update:

Apparently it was a Firefox problem, because using Chromium seems to work with flash player & YouTube HD. RobinJ's comments helped me fix this one.

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You should post the usual hardware specs - CPU, graphics, RAM. Disabling hardware acceleration is most certainly a bad idea. Given that you have Windows XP installed, the computer is probably an old desktop or a netbook, and most likely doesn't have the power needed to play HD flash content. –  mikewhatever Aug 29 '11 at 22:37
    
@mike It's a laptop, it's a few years old. Windows 7 was not out, so I picked XP over Vista. 1080p stutters, but 720p plays flawlessly. In Windows. There is no notable difference having hardware acceleration on or off. Added some specs to the question. –  TLP Aug 29 '11 at 23:31
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1 Answer

up vote 1 down vote accepted

Login and enable the HTML5 player here http://www.youtube.com/html5. Haven't got a Youtube account? Put &html5=True behind the video URL.

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I have done that, but like I said, it does not seem to be available for all videos, only some. –  TLP Aug 30 '11 at 16:13
    
In fact, I've only seen it once so far, so my saying that "it works" is making generalisations based on a rather small sample. –  TLP Aug 30 '11 at 16:27
    
I have only seen one video that didn't support it... Maybe Firefox doesn't support the rigth file format? Why not give Google Chrome a try then? That's what I'm using and it works. –  RobinJ Aug 30 '11 at 16:45
    
Well, it says FF4 is supported, and I am using 6. Also, I have no support for that h.262 codec. I'll give Chromium a try, seems they are just about the same, except Chromium is open source. Thanks. –  TLP Aug 30 '11 at 17:30
    
Nope, same thing. Most of my subs' videos are still using the Adobe Flash player instead of html5. One isn't, but that's it. –  TLP Aug 30 '11 at 17:36
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