Bug 414770 - High CPU load with ~25% when playing a video
Summary: High CPU load with ~25% when playing a video
Status: RESOLVED WORKSFORME
Alias: None
Product: gwenview
Classification: Applications
Component: general (other bugs)
Version First Reported In: 19.08.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Gwenview Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-12-02 21:46 UTC by postix
Modified: 2020-11-20 10:19 UTC (History)
2 users (show)

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Description postix 2019-12-02 21:46:40 UTC 
SUMMARY

Playing an MPEG-4-Video with ~3 Mbits/s and 25 fps, my CPU (2+2 cores) load goes to ~20-25% and the fans start whirring.

This does not happen if the video is played with the VLC player or 4k video is watched on the web. Gwenview could surely need some performance improvements for simple video playback! :)


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux 
KDE Plasma Version: 5.17.3
KDE Frameworks Version: 5.65.0
Qt Version: 5.13.2
Kernel Version: 5.4.1-2-MANJARO
OS Type: 64-bit
Processors: 4 × Intel® Core™ i7-7500U CPU @ 2.70GHz
Memory: 15,4 GiB
Comment 1 Justin Zobel 2020-11-20 04:53:03 UTC 
Are you able to upload the video so we have the same content for testing.
Comment 2 postix 2020-11-20 10:19:37 UTC 
(In reply to Justin Zobel from comment #1)
> Are you able to upload the video so we have the same content for testing.

I don't remember which video it was and the two I tested now produced similar loads as they'd do in VLC (a little bit higher though).

Anyway, since I could disable the auto playback, I am no longer much interested in gwenview's "video capabilities". :)