https://bugs.kde.org/show_bug.cgi?id=506718
Bug ID: 506718
Summary: Insane RAM usage on export while using color clips +
transform to cover things and using CPU encoding
Classification: Applications
Product: kdenlive
Version First 25.04.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Rendering & Export
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 183039
--> https://bugs.kde.org/attachment.cgi?id=183039&action=edit
High RAM usage + low RAM alert + plasmashell crashed, all in the same picture
SUMMARY
Kdenlive took 5.6 GB of memory to encode mild 1440p30 video, which is crazy for
a simple cut and simple covering stuff with squares), which triggered OOM,
crashed plasmashell and made my system run like a crawl.
STEPS TO REPRODUCE
1. Put your project in 1440p30 and put something in it (a video in my case)
2. Put many color clips (at least 7) and use transform to make them cover
subjects
3. Export with any codec with slow CPU encoding- could be x264 in veryslow mode
OBSERVED RESULT
Kdenlive uses an insane 5.6 GB of memory for cutting a video and covering stuff
with black squares
EXPECTED RESULT
Kdenlive should use a VERY lower amount of RAM on encode time- at least low
enough to make the system usable
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 6.4.2
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
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