v4l - video4linux

list video devices

v4l2-ctl --list-devices

get details of a device

this will tell you the available frame rate and other things.

sudo v4l2-ctl --device=/dev/video0 --all

or just run:

sudo v4l2-ctl --all

find capture capabilities

…so you know which resolution you can stream at:

sudo v4l2-ctl -d /dev/video0 --list-formats-ext