Blackmagic video repair
Blackmagic video repair: what it usually means
Blackmagic camera or workflow files can be large, codec-specific, and business-critical. Failures may come from storage media, power loss, interrupted recording, or export problems.
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.