ffplay /dev/video0 Or :
guvcview -d /dev/video0 List supported formats: video0 camera setup
v4l2-ctl -d /dev/video0 --list-formats-ext Set a specific resolution/framerate (example): ffplay /dev/video0 Or : guvcview -d /dev/video0 List
Here’s a helpful review of setting up a camera (typically a USB webcam or embedded camera on Linux, mapped to /dev/video0 ). 1. Quick Check: Is the camera detected? Run: video0 camera setup
sudo usermod -aG video $USER # then log out and back in Or test temporarily with sudo before fixing permissions. Use ffplay (from ffmpeg):
Would you like a specific fix for the error or app you’re using with /dev/video0 ?