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.

ابحث في الدعم

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

Browser not supported

  • 4 ردود
  • 1 has this problem
  • 1 view
  • آخر ردّ كتبه user3640085

more options

A lot of youtube videos are not working , i get this message when playing them " Your browser can't play this video. Learn more" I had tried safe mode, disabled all extensions, had the latest firefox, switched to beta firefox and still nothing. what could be the problem? I don't want to change my browser. thanks

A lot of youtube videos are not working , i get this message when playing them " Your browser can't play this video. Learn more" I had tried safe mode, disabled all extensions, had the latest firefox, switched to beta firefox and still nothing. what could be the problem? I don't want to change my browser. thanks
Attached screenshots

All Replies (4)

more options

Ok. I have finally fixed it, turns out it's a codec problem. So I have downloaded Codec Tweak Tool 6.5 and got into every setting and activate the "recommended" setting and now everything works fine, including live streams on youtube and steam , which didn't worked before. So if anyone has the same problem , you should try what I did.

Modified by user3640085

more options

If you decide to try again in Firefox, can you check my test page -- it's a copy of the old YouTube test page for codec support:

https://www.jeffersonscher.com/sumo/html5-video.html

more options
more options

Ok. I have finally fixed it, turns out it's a codec problem. So I have downloaded Codec Tweak Tool 6.5 and got into every setting and activate the "recommended" setting and now everything works fine, including live streams on youtube and steam , which didn't worked before. So if anyone has the same problem , you should try what I did.