Tootfinder

#TIL You can start two videos at once with #mpv, playing them stacked vertically or horizontally:
`mpv --lavfi-complex="[vid1][vid2]vstack[vo]; \
[aid1][aid2]amix[ao]" \
video1.mkv \
--external-file=video2.mkv`
And you can even go one furthe…