What kinds of damage can it fix?

It can attempt to rebuild a readable container, correct timing problems and recover playable footage from truncated or damaged recordings. A readable index at the end of an MP4 is normal, not a defect. Results depend on the surviving video data: some files can be repacked without quality loss, while others yield only a partial recovery or cannot be recovered.

Can it recover green, garbled or frozen frames?

For supported H.264 recordings with a readable index, it can skip damaged video sections and resume at a usable recovery point without re-encoding the surviving footage. Readable audio tracks keep their original timing, so the missing video may appear as blank or frozen gaps. The result lists detected gaps and is marked partial. Missing picture data cannot be recreated, and this recovery method does not cover every codec or kind of corruption.

What if my MP4 says ‘moov atom not found’?

The recording may have stopped before its index was written. A last-resort scan can sometimes recover H.264 or H.265 video if enough frame data and decoder settings survived, without a reference clip. This scan only accepts files up to 512 MB, does not preserve audio or original timing, and is always marked partial. You may need to adjust the frame rate. Missing decoder settings or missing footage can prevent recovery entirely.

Will repairing lose quality?

Container repair and supported damaged-section recovery copy the retained video without re-encoding it. Skipped sections are still lost. The optional ‘Smooth stutter, glitches, or flicker’ setting rewrites the video and can change its quality; a slower fallback may also re-encode when copying cannot recover playback. Re-encoding cannot restore destroyed frames.

Will it keep multiple audio tracks?

The fast repair attempts to preserve readable audio tracks rather than silently discarding them. If tracks are missing from a recovered result, the checks flag it as incomplete. Raw video recovery has no audio. Browser previews normally play only one audio track, so download the result and use a player with audio-track selection to check the others.

What are the Free and Pro limits?

Free accepts source videos up to 1 GB and includes three repairs a day within the site's shared free allowance. Pro accepts source videos up to 32 GB with unlimited daily repairs. These are input limits, not guaranteed recovery sizes. Both plans have the same repair methods and browser constraints: the slower recovery is capped at 512 MB of output, and raw video extraction only accepts input up to 512 MB. Pro cannot recover more missing data or remove these safety limits.

Can a multi-gigabyte video be repaired in my browser?

Yes, if its structure is readable, its format is supported and your browser has enough local storage. The fast repair reads the source in sections and writes the result to temporary browser storage rather than loading the whole output into memory. Current desktop Chrome or Edge is the best starting point for large files. If the fast repair cannot handle the file, the slower 512 MB output limit still applies, even on Pro.

Which formats can I try?

You can try MP4, MOV, MKV, WebM, AVI, MPEG-TS/M2TS, FLV and WMV, including recordings saved as .tmp. The contents are inspected rather than trusting the extension. Not every format supports the fast repair, and readable-index damaged-section recovery is currently limited to supported H.264 video. Your browser may also be unable to preview an otherwise playable codec.

Does ‘Recovery checks passed’ mean the entire video is fixed?

No. The tool compares duration and track coverage where available and samples decoded pictures and audio near the beginning, middle and end. Those checks cannot prove every frame is healthy. Missing sections, lost tracks, unknown source information or failed playback checks produce a partial or unverified result. Watch the full recovered recording and check its audio before relying on it.

How long does repair take, and can I cancel?

Copying supported footage is generally faster than rewriting every frame. The time depends on the file, damage, device, available storage and method required, so there is no reliable minutes-per-gigabyte estimate. You can use ‘Cancel repair’ while a repair is running. Keep the original file regardless of the result.

Repair a corrupted video file

Check damaged videos, repair container and timing problems, or recover usable sections from supported corrupted recordings. Free files up to 1 GB; Pro up to 32 GB. Everything runs on your device, and incomplete recoveries are clearly marked.

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What people use it for

Check a damaged recording before paying for repair software.
Attempt to recover a screen recording or gameplay capture interrupted by a crash.
Rebuild a readable video that reports the wrong duration or refuses to seek.
Recover usable sections of a supported recording while keeping readable audio on its original timeline.
Attempt to rescue surviving footage from a truncated phone, drone or dashcam recording.
Review missing sections and retained audio tracks before using a recovered clip.

Can a corrupted video be made playable again?

A video repair tool can help when the footage is still present but the file's container or timing information stops a player from opening or seeking through it. Minitooler checks the recording first, then attempts to rebuild playback without changing the surviving picture where possible. It does not promise that every damaged file can be fixed.

Recovering usable footage is different from restoring missing frames

Green blocks, smearing and frozen pictures can mean the compressed video itself is damaged. For supported H.264 recordings with a readable index, recovery skips unusable sections and resumes when the picture can be decoded again. Retained video is not re-encoded, and readable audio stays on its original timeline. That can leave blank or frozen video gaps rather than a shorter, seamlessly repaired recording. These results are marked partial, with detected gaps listed for review.

An interrupted recording with no index needs a different approach. A limited raw-video scan may find surviving frames and decoder settings, but it cannot preserve audio or original timing. It only works with source files up to 512 MB. Neither this scan nor the smoothing option can recreate footage that was never saved or has been destroyed.

Free and Pro limits, including browser constraints

Free allows source files up to 1 GB and three repairs a day within the shared free allowance. Pro allows source files up to 32 GB and unlimited daily repairs. Both plans use the same recovery methods. A larger allowance is not a guarantee that a large, badly damaged video can be fully recovered.

Supported readable files are processed in sections, with the result written to local browser storage. Available disk space, browser storage quotas and format support still matter. The slower recovery has a 512 MB output safety limit on both plans, so it may recover only part of a larger recording. Raw video extraction has a separate 512 MB input limit. Current desktop Chrome or Edge is recommended for large files.

Check the result before relying on it

Recovery checks compare available duration and track information and sample playback near the beginning, middle and end. Passing them does not prove every frame is healthy. Review the complete video and use a player with audio-track selection to check multiple retained tracks. You can cancel a repair while it runs, and your source file is never overwritten. Download the recovery before resetting the tool or closing the page.

Diagnosis and repair stay on your device. Temporary browser storage is local, not an upload of your footage. There is no watermark on the downloaded result; always keep the original too, especially when the recovery is marked partial or unverified.

How it works

1
Choose the original recording
Add one video from your device. Free accepts up to 1 GB; Pro accepts up to 32 GB. The diagnosis checks its structure and whether your browser can read its metadata. Nothing is uploaded.
2
Review the diagnosis and repair options
Start with the default repair. If the video is readable but stutters or has timing problems, you can try the smoothing option, which rewrites the picture. For a missing-index recording, a frame-rate control helps with last-resort video-only recovery.
3
Run the repair
The tool attempts supported recovery methods and checks the result's duration, tracks and sampled playback. Large readable files can use local browser storage; slower recovery is limited to 512 MB of output. You can cancel a running repair.
4
Review and download the result
Read any partial-recovery warnings and listed video gaps. Watch the whole result, check each audio track in a suitable player and download it before leaving the page. Always keep your original recording.

Frequently asked questions

No. Diagnosis and repair run on your device. Larger supported repairs use temporary storage inside your browser, not a server. Download the result before closing or resetting the tool; your original file is not overwritten.