Desktop Capture in Sway

This is really simple if one has wf-recorder:

wf-recorder -f myrecordedscreen.mp4

Want to choose an output to record?

wf-recorder -f myrecordedscreen.mp4 --output DP-1

Only record a section of the screen, you will need to specify the geometry in much the same way as you might for grim using slurp:

wf-recorder -f myrecordedscreen.mp4 -g "$(slurp)"