MKVToolNix GUI crashes when editing job in queue while you have opened file in Multiplexer

So basically, when I have added a file to the queue with "close the current multiplex settings", then add new file to multiplexer, leave it open, then go and "Edit in corresponding tools and remove from queue", Mkvtoolnix just crashes. It doesn't crash if I have no file open or if I have more than one file open. Interestingly enough, if I open more than one file, than add all of them to the queue leaving only one and then edit one of the items in queue, it won't crash, but it will crash if I repeat the process again from the start. Hope I explained it well enough. This is on v25.0.0, but this bug was present long ago, I wanted to report it back than, but forgot how to reproduce it.

changed title from Mkvtoolnix crashes when edditing job in queue while you have opened file in Multiplexer to Mkvtoolnix crashes when editing job in queue while you have opened file in Multiplexer

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Thanks for the report. I cannot reproduce such a crash, neither on Windows nor on Linux.

Does it happen reliably for you? Or only sometimes?

If you can reproduce it reliably, please do the following:

1. Set up the first job & add it to the queue as before.
2. Set up the second job and save the settings to an .mtxcfg file.
3. Do not header over to the job queue (I don't need the GUI to crash).
4. Go to MKVToolNix' settings directory.
5. Please upload the .mtxcfg file created in step 2 as well as the whole jobQueue directory and the mkvtoolnix-gui.ini file from the settings directory to my file server.

Thanks.

added app:MKVToolNix GUI:job queue app:MKVToolNix GUI:multiplexer other:need-feedback type:bug ~7072613 labels

Yes, it happens consistently. I will try your procedure soon and will report.

Upload done, its Files.rar. Also, I have tried several times once again, crashes every time.

changed title from Mkvtoolnix crashes when editing job in queue while you have opened file in Multiplexer to MKVToolNix crashes when editing job in queue while you have opened file in Multiplexer

Thanks. I still cannot reproduce the issue, even with the settings & job queue files you've uploaded.

I honestly don't know what the issue might be, and not being able to reproduce means that pretty much zero chance I can fix it.

Could you make a video showing exactly which steps you're taking that lead to the crash & upload it to the file server again? Maybe I misunderstood your initial description (despite having read them thoroughly five or six times), or maybe I'll notice something.

Maybe it's due to the files being used.

Are you using the 32-bit or 64-bit version? Which version of Windows are you using?

I have Windows 10 64 bit, same with Mkvtoolnix. I'll try recording a video.

I have already reproduced the issue successfully on my Windows 7 32-bit (the latest pre-build — portable version), following the steps mentioned by Giorgi in the description. The most interesting thing is that the issue doesn't occur with all possible files, but in my case I noticed that it appears if a Matroska file in the job queue has a HEVC video track, so I suspect that the issue may have something to do with HEVC, but I might be wrong of course. Anyway, here are my steps to reproduce:

1. Run the GUI, go to the Multiplexer and add a Matroska file that contains a HEVC video track (yes, it must be HEVC; at least in my case I can reproduce it using a file with HEVC).

2. Now press the the option: "Afterwards close the current multiplex settings" from the "Add to job queue" button.

3. Make sure that the file is in the job queue (there is, don't worry ).

4. Go to the Multiplexer, press "New" and add a Matroska file that contains an MPEG-4 AVC video track (I recommend to use MPEG-4 AVC).

5. Now get back to the job queue and press the option "Edit in corresponding tool and remove from queue" from the context menu.

Result: APPCRASH.

If there is need, I can upload both Matroska files (the first one with HEVC and the second one with MPEG-4 AVC) for reproducing the issue.

@remuxer32 it happens with regular x264 too. @mbunkus uploaded the video

Those steps are exactly what I did, and I just tried it once more with the same codecs you mentioned. Again, no crash for me.

Thanks for the video. It confirms that I did indeed take the same steps. Still no crash.

@remuxer32 Please upload those files. Maybe it does have to do with their content after all, though I doubt it.

Ok, I will upload my files soon.

As I have said, this has been happening very long ago, like 1 or 2 years ago. I wanted to report it back than, but forgot how to reproduce it and then forgot about it alltogether. I stumbled upon it today by chance. I haven't tried anything besides mkv files yet.

I don't doubt you. It's just super hard tracking down crashes that don't happen for me.

Discovered something interesting. I took two mp4 files and tried to reproduce the crash with same steps. Crash didn't occur. Then I remuxed those files to mkv and tried to reproduce it once again and it didn't crash once again. Not only that, it also doesn't crash when I take one of those mp4 files (both original and remuxed) and do the same steps with the video file I showed in the video I uploaded.