If a --stream-record is terminated abruptly can the video be recovered?

[Rabcor]

I recorded a stream with --stream-record and then my cat pressed the power button and turned my pc off while i was recording, the video file is there and it's a gigabyte large so clearly it recorded successfully.

But it won't play. Is there a way to recover it somehow? Maybe with ffmpeg or something?

[Rabcor]

I managed to figure it out.

I installed untrunc https://github.com/anthwlock/untrunc

Recorded the same stream agian for a few seconds to get an undamaged similar file, let's call that one new.mp4.

Then I ran

untrunc new.mp4 damaged.mp4

And it fixxed the file right up.