Bug 405811

Summary: Rotoscope - Crash when playing or dragging on timeline
Product: [Applications] kdenlive Reporter: bim.overbohm
Component: Effects & TransitionsAssignee: Vincent PINON <vpinon>
Status: RESOLVED FIXED    
Severity: crash CC: fritzibaby
Priority: NOR Keywords: reproducible
Version: 18.12.1Flags: fritzibaby: Brainstorm+
Target Milestone: ---   
Platform: Appimage   
OS: Linux   
Latest Commit: Version Fixed In: 20.03.70-0567093
Attachments: Project file
Reduced project file
Shortened video file

Description bim.overbohm 2019-03-24 12:17:35 UTC
Created attachment 118991 [details]
Project file

SUMMARY
kdenlive crashes reproducebly when I play or drag on the timeline with rotoscope effect enabled.

STEPS TO REPRODUCE
1. Load attached project
2. Play or drag timeline

OBSERVED RESULT
Crash when rotoscope effect enabled, no crash when not


EXPECTED RESULT
No crash

SOFTWARE/OS VERSIONS
AppImage / Ubuntu 18.04.01 Kernel 4.18.0-16-generic
Comment 1 bim.overbohm 2019-03-24 12:24:03 UTC
Created attachment 118992 [details]
Reduced project file
Comment 2 bim.overbohm 2019-03-24 12:26:37 UTC
The culprit seems to be the Rotoscope effect of the SECOND part of the clip. The first part plays fine. Enabling rotoscope on the second part makes it crash...
Comment 3 bim.overbohm 2019-03-24 12:44:34 UTC
Sorry for the comment flooding. The exact version number is 18.12.1b, but I just tested the 18.08.03 and the daily 19.04 beta AppImage and it crashes there too.
Comment 4 emohr 2019-03-24 19:28:06 UTC
Thank you for reporting. 

With the AppImage #119 and placeholder of the video it doesn’t crash. 

With the 23.3.19 Windows build loading the file it crashed, but I cannot make a backtrace.
Comment 5 bim.overbohm 2019-03-24 21:19:36 UTC
For me it also crashes when I drag the bottom-most rotoscope mask points out of the bottom of the screen. Maybe that is a similar error...
Comment 6 emohr 2019-03-31 14:46:21 UTC
I opened issue: https://invent.kde.org/kde/kdenlive/issues/122. 

Could you re-arrange the project with a short part of MAX HEADROOM COMPILATION.MP4 (<4MB) that we can reproduce the issue and upload here the file MAX HEADROOM COMPILATION.MP4 (<4MB).
Comment 7 bim.overbohm 2019-03-31 19:35:13 UTC
Created attachment 119185 [details]
Shortened video file
Comment 8 bim.overbohm 2019-03-31 19:38:18 UTC
Uploaded the video file. Using this instead of the full file the crash is still happening for me. It's as simple as dragging on the timeline (uppermost part) to skip through the video and hitting the second part of the clip.
Comment 9 emohr 2020-01-24 18:51:18 UTC
I think it's solved. 

Please try with the Kdenlive_Nightly_Appimage
https://binary-factory.kde.org/job/Kdenlive_Nightly_Appimage_Build/lastSuccessfulBuild/artifact/
Comment 10 bim.overbohm 2020-01-26 00:21:24 UTC
Seems to work for me now. Thanks!