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Vimeo - can' view videos, error message says your browser (firefox4) does not support html5


I can view the Vimeo videos with the Safari browser

Additional System Details

Sites Affected


Installed Plug-ins

  • Simplifies the uploading of photo files.
  • iPhoto6
  • RealPlayer Plugin
  • 4.0.50401.0
  • Java Plug-In 2 for NPAPI Browsers
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0) Gecko/20100101 Firefox/4.0

More Information

also_ http://vimeo.com/22219082

Xircal 334 solutions 3835 answers

That site uses Flash which you don't appear to have installed. Download from http://get.adobe.com/flashplayer/ See screenshot.

Question owner

Installed Flashplayer

Went to Vimeo, got this error:

<This video can’t be played with your current setup. Please upgrade to a modern HTML5-compliant browser Or install Adobe’s Flash Player. >

Are you saying that the new "Made to make the Web a better place" version FireFox 4 is NOT a modern HTML5- compliant browser?

Xircal 334 solutions 3835 answers

Firefox 4 supports WebM and HTML5.

Can you see the link to "Switch to HTML5" below that video? I cannot see it on my system. See http://vimeo.com/blog:268

Modified by Xircal

Question owner

I cannot see it in FireFox, however I can see it if I use Safari! FireFox still says I have not downloaded Flash! Is there a way to link the Flash file on to FireFox so it see it?


Xircal 334 solutions 3835 answers

Can you view videos in youtube.com ?

Question owner

Weird-- yes I can view you-tube vids. The first vid said I needed flash, but after that all the vids worked. I can now see Vimeo vids also Seems viewing in You tube must have forced the link to Flash, go figure.

Is this a common problem or procedure for linking Flash?

Xircal 334 solutions 3835 answers

I haven't heard of it before, but sometimes apps need a kick in the rear end to get going again. ;)

Incidentally, sign up to the youtube html5 experiment by clicking the link at the foot of this page: http://www.youtube.com/html5

That might even influence the way the vimeo HTML5 player works, you never know.

Modified by Xircal