This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

When watching videos, audio gets out of sync...

  • 4 replies
  • 206 have this problem
  • 13 views
  • Last reply by weaver99

AnonymousUser
AnonymousUser
more options

Whenever I watch any type of video with Firefox, the audio and video do not sync. They are fine if I watch them in IE but I hate using IE (so very slow). I have tried updating firefox, but I have the most recent update. I have updated Java and Adobe as well and none of these seem to be the problem. It doesn't matter which website I use, all videos do this when viewed with Firefox.

This happened

Every time Firefox opened

== ever since I've had firefox but it seems worse lately

Whenever I watch any type of video with Firefox, the audio and video do not sync. They are fine if I watch them in IE but I hate using IE (so very slow). I have tried updating firefox, but I have the most recent update. I have updated Java and Adobe as well and none of these seem to be the problem. It doesn't matter which website I use, all videos do this when viewed with Firefox. == This happened == Every time Firefox opened == ever since I've had firefox but it seems worse lately

All Replies (4)

AnonymousUser
AnonymousUser Question owner
more options

textbump

AnonymousUser
AnonymousUser Question owner
more options

ok, after searching for hours for a solution to this (and I guess no one else knew either because I wasn't getting any answers!) I finally found a reference to there being a bug in Flash Player that causes this problem for some people. If anyone else is having this problem the solution is surprisingly easy:

After opening a video (in hulu, youtube, where ever) right click on the video. Then click on the first folder (display). Uncheck "enable hardware acceleration."

Problem fixed.

unknownunkowns
unknownunkowns
more options

I have unchecked the "enable hardware acceleration" and it still will not sync streaming videos properly.

weaver99
weaver99
more options

I had updated Firefox to the new Java (TM) 7 Update 5 and Adobe Flash Player 11.3 latest versions and had an out of sync video and audio problem with these configurations. I have maintained the Java update and uninstalled the the Adobe Flash Player version. Then I reinstalled Adobe Flash Player 11.1.102.55 (non IE) version on my desktop PC to synchronize the video/audio problem. Make sure you find the non IE flash player version to download from the internet.