damaged video repair
damaged video repair: what it usually means
A damaged video might have visible glitches, missing audio, a broken duration, or no playback at all. The damage may sit in the media stream, the container map, or both.
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.