src/mp4.cpp:537: void Mp4::saveVideo(const string&): Assertion `track.chunks_.size()' failed. // track.codec_.name_=avc1, track.getNumSamples()=14348

[karepiu]

`Info: version 'v364-bd783dd' using ffmpeg '3.3.4' Lavc57.89.100
Info: reading DJI_0154.mp4
Info: parsing healthy moov atom ...
Composition time offset atom found. Out of order samples possible.

Info: reading mdat from truncated file ...
Info: Found 14348 packets ( avc1: 14348 avc1-keyframes: 479 )
Info: Duration of avc1: 7min 58s 744ms (478744 ms)
src/mp4.cpp:537: void Mp4::saveVideo(const string&): Assertion track.chunks_.size()' failed. // track.codec_.name_=avc1, track.getNumSamples()=14348

Damaged file is > 2GB and seems the tool sees 7 mins of footage but still the chunk error.

Regards

[anthwlock]

Please send me the files (healthy+broken) and I might take a look at some point.
You can upload them on dropmefiles.net. If you think they are too big, you can use untrunc -sh file.mp4.
In case you want to keep the link private, you can send me an email - see my Profile page.
Thank you!

[DKATyler]

@anthwlock
While I'm not the original asker, I encountered the same issue: https://dropmefiles.net/en/Q8Se3
This is a healthy file that somehow throws tracks.chunck_.size()==0 on mp4.cpp line 537. tracks.size() is 1.
Invoked using docker container:
untrunc-master\untrunc-master>docker run -v untrunc-master\untrunc-master:/mnt untrunc /mnt/Test_Vid.mp4 /mnt/Test_Vid.mp4

Just tested the original repo:
https://github.com/ponchio/untrunc
That one was able to process the file.

[joanpepcompany]

@anthwlock

I have the same issue as mentioned by @DKATyler. I performed a git bisect and observed that the issue was introduced in commit acd93a.

I hope it helps. Thanks for maintaining this repo.