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"The Media Could Not Be Played" on Twitter w/FF Quantum

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Video on twitter(and Embedded twitter vids on outside sites) get "The Media Could not be played" error msg.

I went here and all check marks are blue, yet videos still do not work. https://www.youtube.com/html5/

They work on Chrome & Safari, and I did not start seeing this problem until upgrade to FF Quantum

Video on twitter(and Embedded twitter vids on outside sites) get "The Media Could not be played" error msg. I went here and all check marks are blue, yet videos still do not work. https://www.youtube.com/html5/ They work on Chrome & Safari, and I did not start seeing this problem until upgrade to FF Quantum

Wšě wotmołwy (3)

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Firefox has this :

As says can sometimes break a page.

Update Video Card Drivers.

Please Refresh but do this 1st:

then

TEST....... If no issues then Extensions which need to be added back in 1 at a time and tested ..... Or it is your Profile : Make a new one and test ...:

If is your Profile :

Note: Any customization will revert back to default, you will also need to reinstall Extensions.

Please let us know if this solved your issue or if need further assistance.

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EmbraceTheBald said

Video on twitter(and Embedded twitter vids on outside sites) get "The Media Could not be played" error msg. I went here and all check marks are blue, yet videos still do not work. https://www.youtube.com/html5/ They work on Chrome & Safari, and I did not start seeing this problem until upgrade to FF Quantum

Not necessary a bug in Firefox.

https://support.mozilla.org/en-US/questions/1195465#answer-1051992

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^:

You can check the Web Console for error messages to see if this is the same CSP issue.

  • "3-bar" menu button or Tools -> Web Developer