Spectacle video recording broken

Problem

Lately i have noticed that the “video recording” option of spectacle no longer works, for any of the options.

I do remember that it was working at some point before, but cannot pin which version/update broke it on my system.

Component Version
Fedora 43
Spectacle 6.5.4​
KDE Plasma 6.5.4​
KDE Frameworks 6.21.0
Qt 6.10.1
Kernel 6.17.12-300.fc43.x86_64 (64-bit)​
Graphics Platform Wayland ​
Nvidia 580.119.02

Log - Web/MVP9

It also fails for mp4/h264, webp and gif.

Output files

the gif/webm files are 0B, while the webM file is always 422B and mp4 is 261B:

Here is a workaround from other discussion: Starting spectacle from the command line via LIBVA_DRIVER_NAME="" spectacle makes recording work for me again.