How Mirrors and Reflections Complicate Video Anonymization

A reflected face is another visible appearance, even when it belongs to someone already hidden in the main shot. Review mirrors and glass separately from the people standing in front of the camera.

This is especially important in gyms, dance studios, property walkthroughs, restaurants, and night scenes with bright interiors.

Follow each surface independently

Watch the direct image once. On the next pass, concentrate only on the mirror or window.

A reflection may enter before the person appears directly, remain after they leave, or reveal someone behind the camera. It can also become clear for only a moment as the camera angle changes.

Do not assume a selection for the direct face necessarily covers the reflected appearance.

Check the face list for duplicates

In Unseen's Select faces workflow, look for additional entries that show the same person in reflection. The view may be smaller, reversed, distorted, or partly blocked.

For a presenter who stays visible, confirm which reflected entries actually belong to them before marking Keep. Leave uncertain faces hidden until you can identify the appearance from the source.

For a scene where all faces should be hidden, Blur all avoids that visibility distinction but still may miss a difficult reflection.

Why reflections are difficult

Glare, tint, distortion, low contrast, and partial visibility can make a reflected face look unlike a clear direct view. The camera may also focus on the foreground, leaving the reflection small or soft.

Trying a more thorough local preset can help investigate short appearances, but it does not guarantee reliable detection.

Look at the exact reflected face in the output, not just the number of detections reported.

Choose the simplest correction

If a shop window occupies an unnecessary edge of the frame, a crop may remove the problem. If a camera move creates a brief reflection, a shorter cut may work.

For an essential shot, draw a box over the reflected face in Review & fix faces. If the mirror stays still in the frame, Keep area fixed (under Advanced) holds one box in place for the whole appearance, but check that the camera or reflection does not move beyond it.

Do not use a caption as a temporary substitute for coverage if it disappears later.

Check the camera operator too

The operator's face, phone screen, badge, or clothing can appear in a mirror even when no bystander is present. Decide whether those details belong in the public version.

After any crop or correction, review the full shot again. A change that removes one reflection can emphasize another.

For gym-specific examples involving spotters and mirrored walls, read the workout-video guide.