Bug 467397

Summary: Thumbnails disappeared
Product: [Applications] kdenlive Reporter: Martin Schnitkemper <martin.schnitkemper>
Component: User Interface & MiscellaneousAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED WAITINGFORINFO    
Severity: normal CC: luzpaz
Priority: NOR    
Version First Reported In: 22.12.3   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Martin Schnitkemper 2023-03-15 13:08:36 UTC 
SUMMARY
Since version 22.12.3 the thumbnails in the timeline have disappeared. I set the "In/Out Frames" option, but only a placeholder with no image appears.

STEPS TO REPRODUCE
1. Open a project
2. Set one of the frame preview options (I used "In/Out Frames")

OBSERVED RESULT
Placeholder instead of the thumbnail

EXPECTED RESULT
A thumbnail of the first/last frame in full zoom step (21/21)

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.2
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Furthermore, there is a process running in the background that permanently loads the system and continues to run after kdenlive is closed and has to be shut down manually.
Comment 1 luzpaz 2026-01-28 03:51:29 UTC 
(In reply to Martin Schnitkemper from comment #0)
Is this still the case for you on v25.12.1 ?
Comment 2 luzpaz 2026-02-05 19:18:10 UTC 
Couldn't repoduce on
Kdenlive: 25.12.1
Kdenlive
MLT: 7.36.1
FFmpeg
KDE Frameworks: 6.22.0
Qt: Using 6.10.1 and built against 6.10.1
Manjaro Linux (Wayland)
Build ABI: x86_64-little_endian-lp64
Kernel: linux 6.6.122-1-MANJARO

No response from OP.
Recommend closing. If OP can still reproduce, please re-open ticket.
Comment 3 Martin Schnitkemper 2026-02-05 23:53:33 UTC 
The problem hasn't occurred for some time and appears to have been resolved by recent updates. The bug report can therefore be closed as "fixed".