Which Canon files this covers
| Camera | File | Covered here |
|---|---|---|
| EOS R series, recent EOS M and PowerShot | .MP4, H.264 or H.265 | Yes |
| Older EOS DSLRs, such as the 5D Mark III or 70D | .MOV, H.264 | Yes |
| Cinema RAW Light | .CRM | No |
| Older camcorders | .MTS (AVCHD) | No |
Repair the clip
- Copy the broken clip from the card's
DCIMfolder to your computer, and copy one clip that plays, recorded on the same camera at the same resolution, frame rate and compression (IPB or ALL-I). - Open the broken clip in the checker on this page. It runs in your browser and uploads nothing.
- If it asks for a clip, give it the one that plays. It reads that clip's settings, nothing else.
- Watch the free 15-second preview of your footage.
- Download the full video for $4.99, or with a plan. If it doesn't play, write to support@nasrtech.dev and we'll look at it with you.
What we know and what we don't
We haven't tested a Canon file yet, so we won't claim a result for one. What we have proven: GoPro, DJI, RunCam, 70mai, Tesla and Samsung recordings, H.264 and H.265, came back frame for frame, pictures and AAC sound, when we removed their index and repaired them. A Canon MP4 or MOV is the same kind of file. Canon cameras often record LPCM sound in MOV, which we haven't proven yet: the free preview tells you whether your sound came back before you pay.
The engine, in dates
- 1 September 2026: a sample clip that is damaged too no longer stops the repair.
- 10 October 2026: the engine learns to step over camera metadata stored between pictures, after a DJI file returned 5 pictures of 364. It now returns all 364.
- 30 October 2026: many clips repair with no sample clip at all, when the recording proves its own settings.
Other ways
Untrunc does the same repair for free from the command line, with a working clip from the same camera (Untrunc on Windows and Mac). Stellar Repair for Video and Wondershare Repairit install on Windows and Mac and also open MTS; Repairit lists CRM (repairit.wondershare.com, checked 2 November 2026).
