@Boria138 You report issues by email as explained here: https://git.dec05eba.com/?p=about
But anyways, that error comes from your driver. Something is wrong with vaapi on your system. Try running this command to see if there is any error in the output or missing codecs: vainfo --display drm --device /dev/dri/card1
Maybe its using another device on KDE, you didn't explain if it's KDE X11 or KDE Wayland.
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