Method to recover video files not finalised at capture?

[radiantapple]

Hello,
I have a few files (2 to 3 gigs each , 4k 30fps) taken by an app (mcpro24fps, android) that are unreadable (eg. By VLC and other players, and VLC can't repair them).

I assume that I didn't finalise the videos by pressing the record button to finish the videos (stupid mistakes).

Is there a way to make them readable? Perhaps software (I tried a few windows apps though none seemed robust) or by appending the end of working videos recorded by the same app (doubt that would work).

I asked the developer who said it's not possible.

Thanks

[jagabo]

Try Remo Repair MOV. You'll need a similar good file from the same device as reference.
https://www.remosoftware.com/remo-repair-mov

You can get the full video from the free version:
https://forum.videohelp.com/threads/401078-Simple-Screen-Recorder-for-Linux#post2613625

[radiantapple]

Try Remo Repair MOV. You'll need a similar good file from the same device as reference.
https://www.remosoftware.com/remo-repair-mov

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Thanks a lot, though I have perhaps already tried this one. Will check!

[radiantapple]

Unfortunately, the program doesn't recognise the mp4s.

[davexnet]

Did you try untrunc? You need to feed it a reference (good) video recorded the same way/settings
https://www.videohelp.com/software/MP4-Repair-untrunc-GUI

[radiantapple]

Did you try untrunc? You need to feed it a reference (good) video recorded the same way/settings
https://www.videohelp.com/software/MP4-Repair-untrunc-GUI

Thank you for the suggestion!

I selected the corrupt file, reference then executed, and immediately a popup appeared stating "Done", with no resulting file, so it appears it can't read it.

[davexnet]

That's doesn't sound promising. Have you looked at it in a hex editor? Just eyeballing can often be useful,
a good file has the header, followed by the data, a bunch of random binary values.

Often files that are "lost" contain garbage or just binary zeroes