Core dump - Assertion failed track.chunks_.back().off_

[edison303]

Getting the following:

$ untrunc -dst /mnt/d /mnt/g/ref.mov /mnt/e/bad.mov Info: version '' using ffmpeg '4.2.7-0ubuntu0.1' Info: reading /mnt/g/ref.mov Info: parsing healthy moov atom ... [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fffcb265f40] ignoring 'frma' atom of 'fl32', stream format is 'lpcm' Info: special track found (tmcd, 'TimeCodeHandler') untrunc: src/mp4.cpp:162: void Mp4::parseTracksOk(): Assertion track.chunks_.back().off_ < mdats.back()->start_ + mdats.back()->length_' failed.
zsh: abort (core dumped) untrunc -dst /mnt/d /mnt/g/ref.mov /mnt/e/bad.mov`

Let me know how I can help solve this. Zero idea where to look now, but happy to help as I can.