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Green Checkers and Blown up video

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Videos and photos play with green chekerboard patterns over them. Videos play normal initially, then zoom about 400% size and you can't see the whole frame no matter what. Same links work fine in Chrome/Edge. Captures shows difference between Firefox and Edge

Videos and photos play with green chekerboard patterns over them. Videos play normal initially, then zoom about 400% size and you can't see the whole frame no matter what. Same links work fine in Chrome/Edge. Captures shows difference between Firefox and Edge
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You can try to disable hardware acceleration in Firefox.

Close and restart Firefox after modifying the setting for changes to take effect.

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.