This device shows as
534d:2109 MacroSilicon USB Video in lsusb.
- If it's not working in OBS studio, try switching
Video Formatsome times, or manually switch its Resolution to 1920x1080.
- If it's still not working, refer to this guide. (The bug in this guide was already fixed in latest kernel, but give it a try. )
Verified method to use this device:
ffplay -f video4linux2 -framerate 50 -video_size 1920x1080 -input_format mjpeg /dev/video0