SUMMARY The preview of recording looks like green lines all over, garbled, nothing visible, weirdly sheared or such... STEPS TO REPRODUCE 1. Run Spectacle screen recording 2. Stop and play the video in the preview OBSERVED RESULT Garbled video EXPECTED RESULT Preview working SOFTWARE/OS VERSIONS Operating System: KDE neon 6.3 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.2 Kernel Version: 6.11.0-21-generic (64-bit) Graphics Platform: Wayland
Hi - can you please specify which recording mode you were using - Rectangular Region, Full Screen, or Window? Or, does the issue show up on your device when using all of those? Is it only the preview in Spectacle itself that appears glitchy, or does that show up when playing the resulting video in a video player application? Can you also please share what graphics card your system uses? Thanks!
(In reply to John Kizer from comment #1) > Hi - can you please specify which recording mode you were using - > Rectangular Region, Full Screen, or Window? Or, does the issue show up on > your device when using all of those? > > Is it only the preview in Spectacle itself that appears glitchy, or does > that show up when playing the resulting video in a video player application? > > Can you also please share what graphics card your system uses? > > Thanks! It's happening for any mode, rectangular of full window. The preview is always garbled. Graphics Processor: Mesa Intel® Arc I'll post the screenshot (difficult to screenshot the screenshot app Spectacle... or impossible probably, so I had to use Peek to record it as a gif).
Created attachment 180252 [details] well, peek was not able to screenshot spectacle either, it seems
Created attachment 180253 [details] photo of the garbled preview state
Funny thing is that screencast (the video) itself is totally fine. Just the preview is garbled/does not work.
I think I have the same bug, but my garbled preview looks different from yours. I reported it here: https://bugs.kde.org/show_bug.cgi?id=508309
*** Bug 508309 has been marked as a duplicate of this bug. ***
> Can you also please share what graphics card your system uses? Same issue with an AMD Ryzen 7 PRO 5850U with Radeon Graphics on Fedora 42.
I've noticed that the issue appears for WebM/VP9 but not when selecting MP4/H.264 Can the others confirm?
(In reply to postix from comment #9) Can confirm, same for me. (see my duplicate for more pics and steps to reproduce)
Facing the same bug in Fedora 42 KDE
I don't think this bug is related to spectacle itself. I was able to reproduce the exact same glitching with a minimal python program using QMediaPlayer. It seems to only happen on wayland.
Created attachment 184628 [details] Minimal python program using QMediaPlayer
I'm NOT a KDE developer so I'm not sure where should I report the bug
Created attachment 184629 [details] Logs of my python program
Possibly related: https://bugreports.qt.io/browse/QTBUG-138679 https://invent.kde.org/multimedia/dragon/-/commit/9f0225ba289587a23987c68fc69af5902699e5cd
You may want to see https://bugs.kde.org/show_bug.cgi?id=506799#c9.