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.

Duplicate Audio on YouTube videos begins seconds before the actual video and continues to play out of sync with the actual video audio.

AB5BX
AB5BX
more options

When I click on a YouTube video, a duplicate audio begins playing a few seconds before the actual video starts. When the video plays, the video audio is in sync with the video but the duplicated audio plays in the background out of sync. I tried looking at add-ons and tried uninstalling and reinstalling Firefox. I tried other recommended fixes but the problem persisted. I did not have the same problem when viewing videos in Internet Explorer.

I discovered a simple solution. I had sometime back installed another video program called VSL Video. I never used it and had forgotten it was installed. Apparently, VSL Video was trying to run in the background every time I would use Firefox to view YouTube videos. I did not have the problem with Internet Explorer. I uninstalled VSL Video and the duplicate audio problem went away. I hope this helps someone with the same problem.

When I click on a YouTube video, a duplicate audio begins playing a few seconds before the actual video starts. When the video plays, the video audio is in sync with the video but the duplicated audio plays in the background out of sync. I tried looking at add-ons and tried uninstalling and reinstalling Firefox. I tried other recommended fixes but the problem persisted. I did not have the same problem when viewing videos in Internet Explorer. I discovered a simple solution. I had sometime back installed another video program called VSL Video. I never used it and had forgotten it was installed. Apparently, VSL Video was trying to run in the background every time I would use Firefox to view YouTube videos. I did not have the problem with Internet Explorer. I uninstalled VSL Video and the duplicate audio problem went away. I hope this helps someone with the same problem.

All Replies (1)

Wesley Branton
Wesley Branton
more options

Glad to see that you solved the issue. Since you have answered your own question, please mark my response as the solution so that the thread appears as "solved" when a user searches for it.

Thanks.