Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Fullscreen Youtube videos lag (audio fine, video lags) on Firefox 5.0; it never did on the previous version.

  • 1 ŋuɖoɖo
  • 94 masɔmasɔ sia le wosi
  • 14 views
  • Nuɖoɖo mlɔetɔ MagicMike

more options

While watching Youtube videos in full screen, the video lags/un-syncs from the audio (audio fine, video lags) in the Firefox version 5.0. It never did that the previous version until I updated to 5.0 a few months back.

While watching Youtube videos in full screen, the video lags/un-syncs from the audio (audio fine, video lags) in the Firefox version 5.0. It never did that the previous version until I updated to 5.0 a few months back.

All Replies (1)

more options

I was able to help this problem on Windows XP (where I mainly saw it) by disabling hardware acceleration.

Tools > Options > Advanced > General Tab > Uncheck "Use hardware acceleration when available"