Whenever I try to watch a video on YouTube, the video is completely unwatchable as seen in the image below:

YouTube VSync issues

How to fix this in elementary 5.1?

  • Does it look like this in every YouTube video? Does it work on other browsers? Dec 16, 2019 at 11:17
  • 1
    Every video error on youtube, but in google chrome or firefox video is normal Dec 17, 2019 at 5:58
  • Do videos on other websites work? Like maybe Vimeo or PeerTube? Dec 17, 2019 at 12:07

1 Answer 1


This isn't the sort of problem you fix yourself. You need to report this to the WebKit developers to solve.

First, make sure that you're using the latest version of WebKitGTK, 2.26.2.

Then, report a bug on WebKit Bugzilla. Select the Media component, prefix the title of the bug with [GStreamer], and CC [email protected]. In your bug report, mention the version of WebKitGTK that you're using, and your GStreamer version. Include the screenshot you posted here.

Finally, navigate to webkit://gpu and paste all that information into the bug report. The output you copy/paste will be messy; take the time to add blank lines to make it easier to read.

Lastly, see if you have gstreamer1.0-vaapi installed. If so, uninstall it and check if that makes a difference.

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