This setting is missing from Accessibility.
https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0058139 Sign in to the Zoom desktop client. This is not listed under accessibility.
Click your profile picture, then click Settings.
Click Accessibility .
Select the check box to enable Automatically dim video when flashing images or visual patterns (such as stripes) are detected.
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