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Embedded video is black but with audio, but the video works fine on youtube.

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New User

Embedded video is black but with audio, but the video works fine on youtube.

I'm having trouble with firefox not been able to display embedded video on sites. I see the preview image but when i start play all video area becomes black and I can hear the audio playing. I also can pause the "video".

If I start firefox in safe mode, it works. I have deactivated all my extensions/add-ons, without any success. I have reset all cache, no success I have restored to factory result, no success I have uninstalled firefox, and deleting all local data and reinstalled firefox, still same problems.

I have tested to go to http://www.youtube.com/html5 and activated the html5 player, and then I see the play button, progressbar and volume etc, but still no video.

The video is working fine in IE 9 and Chrome (unknown version, but since it autoupdates it's probably the latest)

4 REPLIES

Re: Embedded video is black but with audio, but the video works fine on youtube.

New User

Re: Embedded video is black but with audio, but the video works fine on youtube.

As I wrote, I now have zero extensions but I do have plugins. But as I see they are not disabled when I run in safe mode and in safe mode it works. Also, the video works if I go directly to youtube, but not if I view it embedded/in a iframe.

Site Moderator

Re: Embedded video is black but with audio, but the video works fine on youtube.

Try to disable hardware acceleration in Firefox.


You can check for problems caused by recent Flash updates and try these:

  • disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
  • disable protected mode in Flash 11.3 and later
  • disable hardware acceleration in the Flash plugin
New User

Re: Embedded video is black but with audio, but the video works fine on youtube.

So I unchecked the box: "Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available" and the embedded video starting playing VIDEO! Thanks for that. Now I'm curious if it should work however with it clicked though?