iPhone Pro Max 17: Green flashes in video playback

This doesn’t look like a hardware problem, because the issue appears only in landscape mode and only with certain videos you’ve already recorded. That usually points to a recording or file-corruption issue, not a sensor fault. Check the original source of the videos—especially if they’re synced to iCloud. If they are, make sure your internet connection is stable while streaming them, or download them fully and try again.

The green flashes, blocks, or glitches—especially when zooming, double-tapping, or jumping through the timeline—often happen when the file didn’t encode properly or isn’t loading cleanly from the cloud.

In short, verify whether the video is stored locally or on iCloud, ensure a good connection, and test by recording a short clip offline to see if the problem repeats.