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sudo cp /usr/share/sddm/themes/hills/resources/background/background.mp4 /usr/share/sddm/themes/hills/resources/background/background_bak.mp4


sudo ffmpeg -i /usr/share/sddm/themes/hills/resources/background/background_bak.mp4 -an -c:v copy /usr/share/sddm/themes/hills/resources/background/background.mp4