Everything went smoothly except now every video I open in mpv flickers. (I don’t have this problem in SMPlayer or VLC, though.)
Edit: Using the free AMD graphics driver, I get the following error message when I open mpv from a terminal.
radeon: The kernel rejected CS, see dmesg for more information (-22).
Edit 2: In ~/.config/mpv/mpv.conf, I needed to add
vo=vdpau to fix the problem (although I already had