Bug 485727 - Video playback broken in X11 session
Summary: Video playback broken in X11 session
Status: REPORTED
Alias: None
Product: gwenview
Classification: Applications
Component: general (other bugs)
Version First Reported In: 24.02.2
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Gwenview Bugs
URL:
Keywords: X11-only
Depends on:
Blocks:
 
Reported: 2024-04-18 11:21 UTC by Thomas N.
Modified: 2025-02-24 17:58 UTC (History)
0 users

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Description Thomas N. 2024-04-18 11:21:00 UTC 
SUMMARY
Playback of any video files within Gwenview is broken in X11 session since transition to KF6 / Plasma 6. Sound is playing correctly, time in progress bar is advancing, but playback window is black (only background color, no video).
Video thumbnails are shown correctly in file browser. Pictures are also shown correctly.
Video playback works as expected in Wayland session.

STEPS TO REPRODUCE
1. Open Gwenview from within X11 session
2. Select any supported video file for playback

OBSERVED RESULT
Black screen (background color) where video should be visible, audio works

EXPECTED RESULT
Video and audio should be working.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Arch Linux, Kernel 6.8.5-arch1
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version:  6.7.0
NVidia driver version: 550.67

ADDITIONAL INFORMATION
phonon-vlc and phonon-gstreamer have been used as backends, no difference.
Gwenview 23.08.5 (from Plasma 5) works.
Comment 1 TraceyC 2025-02-24 17:58:43 UTC 
Adding the x11-only keyword