Bug 461920

Summary: parallel processing crashes render
Product: [Applications] kdenlive Reporter: Matthew Cohen <cohen>
Component: Rendering & ExportAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED FIXED    
Severity: crash    
Priority: NOR    
Version First Reported In: 22.08.3   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In: MLT 7.12
Sentry Crash Report:

Description Matthew Cohen 2022-11-16 20:30:08 UTC
SUMMARY
***
Enabling parallel processing in a video render crashes the render. 
***


STEPS TO REPRODUCE
1.  In the render options for MP4-H264/AAC, click the "parallel processing" box.

OBSERVED RESULT

The render fails immediately, with the following error:

`free(): invalid pointer`



EXPECTED RESULT

the render completes (faster, as we're using parallel processing), resulting in a playable video file

SOFTWARE/OS VERSIONS

Operating System: Arch Linux
KDE Plasma Version: 5.26.3
KDE Frameworks Version: 5.99.0
Qt Version: 5.15.7
Kernel Version: 6.0.8-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6600 XT
Manufacturer: ASUS
Comment 1 Jean-Baptiste Mardelle 2022-11-20 17:22:15 UTC
There was a regression in MLT 7.10.0 that caused crash on rendering with parallel processing.
This has now been fixed in MLT git and 7.12.0. Can you update to check if this is fixed?
Comment 2 Matthew Cohen 2022-11-20 19:40:17 UTC
(In reply to Jean-Baptiste Mardelle from comment #1)
> There was a regression in MLT 7.10.0 that caused crash on rendering with
> parallel processing.
> This has now been fixed in MLT git and 7.12.0. Can you update to check if
> this is fixed?

MLT 7.12 has fixed the issue - thank you!
Comment 3 Bug Janitor Service 2022-12-05 05:14:00 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
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