Bug 433584 - Rendering crashes with core dump
Summary: Rendering crashes with core dump
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: Rendering & Export (show other bugs)
Version: 20.12.2
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-02-25 13:03 UTC by gerd.muncke
Modified: 2021-03-01 17:04 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:
fritzibaby: Translation_missing+

Attachments
Output on console (127.35 KB, image/png)
2021-02-25 13:03 UTC, gerd.muncke 		Details
the generated mlt-script that led to a segmentation fault (246.64 KB, application/xml)
2021-02-27 19:58 UTC, gerd.muncke 		Details
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Description gerd.muncke 2021-02-25 13:03:44 UTC 
Created attachment 136149 [details]
Output on console

SUMMARY
As the rendering cannot currently be started from within kdenlive I just generate a render script which I then render with 'melt' from the command line

STEPS TO REPRODUCE
1.Generate script 
2.execute melt "render-script"
3. After rendering about 600 frames it crashes with 'Segmentation fault'

OBSERVED RESULT
The rendering process stops abruptly before finishing the job

EXPECTED RESULT
Render the data and produce mp4 file

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 emohr 2021-02-26 17:37:29 UTC 
Please try with the current Kdenlive AppImage version 20.12.2 to see if there are any packaging issues https://download.kde.org/stable/kdenlive/20.12/linux/
Comment 2 gerd.muncke 2021-02-26 20:46:04 UTC 
I'm not sure whether I understand your request. My bug report was based on that version with exactly that sha256 checksum. So, please, let me know what new I could provide to resolve the issue.
Comment 3 emohr 2021-02-27 08:33:40 UTC 
My question was if you run Kdenlive with the AppImage. If not please do so. 

If you run the AppImage already please upload the mlt-script here for further check.
Comment 4 gerd.muncke 2021-02-27 19:58:49 UTC 
Created attachment 136239 [details]
the generated mlt-script that led to a segmentation fault
Comment 5 gerd.muncke 2021-02-27 19:59:49 UTC 
I'm always running kdenlive-20.12.2-x86_64.appimage
Comment 6 emohr 2021-02-28 19:25:04 UTC 
Your project is 1440p 18fps. Do you have a special clip around 33seconds in the timeline?
Comment 7 gerd.muncke 2021-02-28 20:24:17 UTC 
the clip starting at 33 sec in the timeline is an animation of a photograph generated and rendered into an H264 clip by 'Synfig studio'
Comment 8 gerd.muncke 2021-03-01 16:50:10 UTC 
It seems the bug has been resolved, at least from what I observed. Your hint at the time when the render crashed was conclusive. I removed the doubtful mp4 clip and replaced it by a new one mpeg-2 rendered clip which subsequently worked. Of course I don't know whether that is the source of the problem in general. The clip that seems to have caused the problem ran without problems in the clip viewer.
Unfortunately the frame number wasn't displayed when the segmentation fault occurred. Thanks for attending to the problem.
Comment 9 emohr 2021-03-01 17:04:35 UTC 
Thanks for the feedback. Could you upload this "buggy" mp4 clip, so we can make further test?