How to Recover a Corrupted Video File

Separate container, index, codec, transfer, and missing-data problems before remuxing or re-encoding a copy.

A video that will not play may be incomplete rather than corrupt, or it may contain valid streams in a damaged container. It can also use a codec the player does not support. Re-encoding every failure immediately is slow, changes quality, and can conceal the distinction between recovered media and invented or skipped frames.

Compare the file size with the source, test another player, and inspect container and stream metadata with a tool such as ffprobe. If streams are readable, a remux can rebuild container structure without intentionally recompressing media; if decoding fails, a controlled transcode may salvage readable sections. Keep logs and never write output over the input.

A practical checklist

1Preserve the original and look for a complete source, previous version, or camera copy.
2Compare size and test the copy in more than one trusted player.
3Inspect container, duration, streams, codecs, and decode errors with a media probe.
4Try a separate-output remux before a quality-changing transcode when streams are intact.
5Validate duration, seeking, frames, audio sync, metadata, and missing intervals.

Understand the situation

Recovery starts by preserving evidence. Work on a copy, stop syncing or writing to a failing source when appropriate, record the original size and checksum, and look for provider version history or backups before attempting a repair that may discard data.

Use a controlled workflow

Separate retrieval from repair. A previous healthy version is preferable to reconstructing a damaged file; if repair is necessary, save every output under a new name and validate content, pages, formulas, media duration, or archive members rather than trusting that an application opened it.

Make the final decision

A recovered video must be checked from beginning to end, including seeks near the start, middle, and end, audio continuity, frame dimensions, frame rate, orientation, subtitles, and capture time. For legal, scientific, or irreplaceable footage, preserve hashes and use a qualified recovery workflow rather than relying on a casual transcode.

ClearCopies is not a repair or forensic-recovery product. It can help locate supported byte-identical cloud copies, but a repaired or partially recovered file will normally have different bytes and must be assessed with format-specific tools and human review.

Limits and risks to check

— Re-encoding changes bytes and can reduce quality or discard metadata.
— A repaired index cannot restore media packets that were never recorded or transferred.
— Untrusted media files exercise complex decoders and should be handled in updated software.
— Partial playback does not prove that the end of the file or every stream survived.

Official references

Frequently asked questions

What is the difference between remuxing and transcoding?

Remuxing places existing encoded streams into a new container; transcoding decodes and encodes them again. Remuxing is preferable when intact streams only need container repair.

Can VLC repair a video?

VLC documents repair behavior for some broken or partially downloaded media, but support depends on the format and damage. Preserve the source and validate any result independently.

Will converting MOV to MP4 fix corruption?

Only if the readable streams can be remuxed or decoded. Conversion cannot recreate absent packets and may introduce another quality-changing copy.

Look for untouched exact copies.

ClearCopies is not a repair or forensic-recovery tool. It can identify supported byte-identical copies already present in OneDrive, Google Drive, or Dropbox, giving you another place to look before changing a damaged file.

Find exact cloud copies