Repair Video Online
Use Repair video Online, review the result, and keep the original until the output is checked.
How to use Repair video Online
- Add the files you want to rebuild - several can run in one batch.
- Start with the defaults for Fix Audio Issues and Fix Video Issues: they rebuild the timestamps and the stream timebase through a decode and re-encode, and leave your frame rate, size and length alone.
- Tick Rebuild Index for a file that will not seek, or that other programs refuse to open, and Output Format to change container.
- Add advanced filters such as Stabilize Video, Reduce Noise, Deblock Video or Deinterlace Video only for the fault you can actually see, then press Convert All.
What Repair video Online actually does to your file
This is a re-encode pass, not an analysis: it produces a clean, standard file from anything the browser can still decode, which is why it fixes broken timestamps, a missing index and odd container quirks - but it cannot recover data that is genuinely missing, and a file that will not decode at all fails rather than being repaired. Nothing here changes the frame rate or resolution, so a clip that merely looks wrong will still look wrong until you pick the filter that matches the fault - Deinterlace on a progressive file, for instance, damages it. Work from a copy of the original, since every re-encode is a generation of loss. On a 6 second 640x360 test file the default pass came back still exactly 6.000 seconds long, at 610 KB going down to 517 KB. Re-cut the clip in a trimmer afterwards if it starts at the wrong place.
Repair Video Online FAQ
What does Repair video Online do?
Restore your damaged MP4, MOV, and other video files with our free online video repair tool. Quickly fix corrupted videos in multiple formats, all without downloads!
Which files work with Repair video Online?
This category commonly supports MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Will repair bring back all my data?
No guarantee. Repair fixes the container so the file opens again; missing payloads stay missing. Keep the damaged original so you can try again or use another method.
Will my original file be changed?
No. The work is done on a copy in this tab by a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the Repair video Online free?
Yes. The Repair video Online is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.