Bug 423816

Summary: Rendering Crash for MP4 (H264/AAC), library error
Product: [Applications] kdenlive Reporter: candide <m8oxu4nv3>
Component: Rendering & ExportAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED WORKSFORME    
Severity: crash CC: fritzibaby
Priority: NOR Flags: fritzibaby: timeline_corruption+
Version First Reported In: 20.04.1   
Target Milestone: ---   
Platform: Microsoft Windows   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Log of rendering crashes

Description candide 2020-07-03 00:10:51 UTC
Created attachment 129856 [details]
Log of rendering crashes

SUMMARY
I tried rendering/exporting a 2h long video made from clips that I copy-pasted from other Kdenlive projects (because adding clips from the Library doesn't work; I get the error "Cannot open file").

I selected MP4 (H264/AAC) as my rendering settings, medium-high quality, and I didn't touch anything else. The video would render until the last minute and then would crash. I tried again with different quality settings and the same thing would happen. (see attachment for crash 1 log)

I then wondered if it had to do with the fact that I used pasted clips, so I made an archive of the project, unzipped the archive, and tried exporting it again. Same results. (see attachment for crash 2 log)

I finally exported the project as WebM, and that worked but took twice as long as MP4.

I'm not sure how to reproduce the rendering error, but here are steps to reproduce the library error:

STEPS TO REPRODUCE - Library error
1. Create a Title clip
2. Add to library
3. Open a new project
4. Try to insert the Title Clip Library file into the project
5. Should get error saying "Cannot open file C:Users/username/AppData/Roaming/kdenlive/library/title.mlt"



SOFTWARE/OS VERSIONS
Windows: 10
Comment 1 emohr 2020-07-18 13:32:44 UTC
Please untick "parallel processing" in the render setting and try again.
Comment 2 candide 2020-07-29 17:42:04 UTC
(In reply to emohr from comment #1)
> Please untick "parallel processing" in the render setting and try again.

That worked, thank you!
Comment 3 emohr 2020-07-29 19:14:38 UTC
Thank you for the feedback and contribution. Glad to hear it works. 

We close this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number.