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Green screen on video, disabling hardware acceleration did not help

  • 7 replies
  • 2 have this problem
  • 380 views
  • Last reply by McCoy

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Hi, since a couple of days ago, I've had green screens appear on all videos that I attempt to play in Firefox. The audio still works fine, but there is no video. I have not installed or updated any add-ons recently. I do not have any problem viewing videos in other browsers (Chrome, Safari...) on the same machine.

Steps already taken: 1) Disabled hardware acceleration in Firefox preferences and restarted - no change 2) Set "webgl.disabled" to "true" in about:config and restarted - no change 3) Emptied cache and deleted cookie and restarted - no change

Any ideas appreciated, and happy to provide further details / logs if helpful

Chosen solution

mbimmler said

Wonder whether it's related to https://bugzilla.mozilla.org/show_bug.cgi?id=1546836 but I'm clearly out of my technical depth here..

You posted this while I was typing my suggestion to try to toggle that preference on the "about:conffig' page - had a look at that bug report and you're right.

Thank you for pointing that out  !

Read this answer in context 👍 1

All Replies (7)

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Wonder whether it's related to https://bugzilla.mozilla.org/show_bug.cgi?id=1546836 but I'm clearly out of my technical depth here..

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Hello mbimmler,

Would you please try this on the "about:config" page :

Type in the search bar :

media.wmf.dxva.

Search for the preference :

media.wmf.dxva.d3d11.enabled and set its value to false

Then close and restart Firefox.

Does that help  ?

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Thanks McCoy, but I don't appear to have the "media.wmf.dxva.d3d11.enabled" in my about:config - in fact, I don't have anything with "media.wmf" at all.

When filtering for "media.w", I only get preferences beginning with "media.webrtc", "media.wave", "media.webaudio", "media.webm", "media.webspeech" or "media.webvtt"

Best, Michael

Modified by mbimmler

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Chosen Solution

mbimmler said

Wonder whether it's related to https://bugzilla.mozilla.org/show_bug.cgi?id=1546836 but I'm clearly out of my technical depth here..

You posted this while I was typing my suggestion to try to toggle that preference on the "about:conffig' page - had a look at that bug report and you're right.

Thank you for pointing that out  !

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Thanks for confirming! Looks like they were able to fix it quite easily and in the time for 67b15 on Monday (?), so that should work again soon then :)

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Note that Windows Media Foundation (wmf) is only for Windows OS and not for Mac (the OP is on Mac) and Linux.

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cor-el said

Note that Windows Media Foundation (wmf) is only for Windows OS and not for Mac (the OP is on Mac) and Linux.

Thank you for pointing that out, cor-el.