Bug 508400

Summary:	Dolphin / ffmpeg combo not animating video thumbnails after todays 25.08.0-1.1 update
Product:	[Frameworks and Libraries] ffmpegthumbs	Reporter:	Sylens <gazing-zero-steam>
Component:	general	Assignee:	Unassigned bugs <unassigned-bugs-null>
Status:	REPORTED ---
Severity:	minor	CC:	bugseforuns, gazing-zero-steam, nicolas.fella
Priority:	NOR
Version First Reported In:	25.08.0
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Sylens 2025-08-17 21:57:33 UTC

SUMMARY
I got a big update today, ffmpegthumbs was one of them, to 25.08.0-1.1 and since then my Dolphin doesn't animate the video thumbnails, when hovering my mouse over it. Maybe Dolphin is relate too, i can't tell..

STEPS TO REPRODUCE
1. Start dolphin (btw also version 25.08)
2. hover mouse over a video
3. observe how it's not animating the thumbnail of it..

OBSERVED RESULT
no thumbnail preview animation

EXPECTED RESULT
thumbnail preview animation

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20250816
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Kernel Version: 6.16.1-1-default (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6500 CPU @ 3.20GHz
Memory: 16 GiB of RAM (15.6 GiB usable)
Graphics Processor: NVIDIA GeForce GTX 1050 Ti
Manufacturer: MSI
Product Name: MS-7972
System Version: 2.0

Yes I cleaned the thumbnails cache folder, no it didn't solve the problem. Yes I relaunched Dolphin after cleaning up the thumbnails cache folder.

thanks for fixing it asap, I have many many entertaining vids, and I need to see their contents for my daily ritual "sessions" ;D

Comment 1 Patrick Silva 2025-08-18 13:31:57 UTC

On Arch Linux running Dolphin 25.08.0 the video preview does not change while I hover over the file, but it does when I click on the file.

Comment 2 Sylens 2025-08-18 13:44:27 UTC

(In reply to Patrick Silva from comment #1)
> On Arch Linux running Dolphin 25.08.0 the video preview does not change
> while I hover over the file, but it does when I click on the file.

Yes I also observed this yesterday when I filed this bugreport, however I noticed it's so random, that I don't think the click is related so that's why I didn't wanted to mix it in here cause more (possibly misleading) info can cause the bug fixing progress slower (remember: less is always more) 

Cause sometimes it truly generates on click, sometimes not, sometimes it quickly changes the thumbnail when hovering off of the video, and it appears for like 100ms, so it's very quick - the underlying engine got broken.