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user3640085
user3640085
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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)

user3640085
user3640085 Question owner
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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

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
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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

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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See also:

user3640085
user3640085 Question owner
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.