Dim flashing video shared in a meeting or webinar

Participants with photosensitivity can can be unprepared for flashing and strobing effects in a video shared by others in a meeting or webinar. When you enable video dimming in your personal settings, the Zoom app can recognize these effects and automatically dim the incoming video, reducing the impact of those video effects on the viewer.

Enabling this setting has no effect on others’ view of the shared video, and others are unaware if this is enabled by anyone else in the meeting or webinar.

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Prerequisites for automatically dimming video with flashing images or patterns

How to enable video dimming

  1. Sign in to the Zoom desktop client.
  2. Click your profile picture, then click Settings.
  3. Click Accessibility .
  4. Select the check box to enable Automatically dim video when flashing images or visual patterns (such as stripes) are detected.
  1. Sign in to the Zoom mobile app.
  2. In the bottom-right corner, tap More  .
    This will open the Settings menu.
  3. Tap Accessibility.
  4. Tap the toggle to enable Dim Screen Share Video.

What to expect when flashing images or visual patterns are detected

Before detection

When starting to view shared content, the shared video will be unaltered and shown to you with 0% opacity.

After detection

When flashing images or visual patterns, such as stripes, are detected in the shared video you are receiving, the entire shared screen will dim to 75% and remain dimmed until 4 seconds of safe, non-flashing video content is detected.