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bplein

macrumors 6502a
Original poster
Jul 21, 2007
538
197
Austin, TX USA
Hello all!

I just recently noticed that when using Firefox on my 2017 iMac Pro (AMD Vega 64), some videos played by FireFox are corrupt, as in a single solid block of color (my examples are all a dithered orange color).

Here is a screenshot of an animated graphic (actually hosted as video on a CDN run by Vimeo) from https://unifi-protect.ui.com

Safari:

upload_2019-4-26_8-50-8.png


Firefox:
upload_2019-4-26_8-50-39.png


The video clip used for the animated web element is here: https://player.vimeo.com/external/2...91c7c2abc093ce2b7581a6a7ee74a1&profile_id=165

Safari and Chrome show it correctly. My work laptop (MBP, macOS 10.14.4) shows it correctly in all browsers.

I can't go back to 10.14.4 on the iMac Pro, in part due to the fact that the iMac Pro has boot issues with 10.14.4 that aren't solved yet (but are working in 10.14.5, see https://forums.macrumors.com/threads/10-14-4-bootloop-on-t2-macs-imac-pro-and-others.2175186/).

Has anyone seen this before? I've deleted Firefox, removed my ~/Library/Application Support/Firefox directory, and reinstalled, and the same issue persists.

Thanks in advance.
[doublepost=1556288075][/doublepost]Ha!

I updated Adobe Flash (because Firefox said that my Shockwave was out of date), and now I have GREEN corruption, not orange-dithered.

upload_2019-4-26_9-14-29.png

[doublepost=1556288229][/doublepost]Well, green is if Firefox hardware acceleration for video is disabled. If I enable that setting, it goes back to the original orange.

:|
 
There was a change in beta 3 that affects Firefox's sandboxing. The fix is already in Firefox Nightly and I think they're trying to get the fix added for the next Firefox Beta build on Monday
 
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