QuickTime screen recording repair
QuickTime screen recording repair: what it usually means
A QuickTime screen recording can leave behind a MOV file that Finder sees but QuickTime cannot open. This often happens when the recording is interrupted before the final save completes.
If the file has real size, there may still be recoverable frames and audio inside. The safest first move is to leave the original untouched and create a separate repaired preview.
Do not trim, re-export, repeatedly convert, or overwrite the damaged file. If you need to experiment, work from a copy and keep the original exactly as it is.