sudo dnf -y install v4l-utils [chris@電脳 ~]$ v4l2-ctl --list-devices Logitech StreamCam (usb-0000:00:14.0-3): /dev/video2 /dev/video3 /dev/media1 Integrated Camera: Integrated C (usb-0000:00:14.0-7): /dev/video0 /dev/video1 /dev/media0 [chris@電脳 ~]$ [chris@電脳 ~]$ v4l2-ctl --all -d /dev/video2 Driver Info: Driver name : uvcvideo Card type : Logitech StreamCam [..] # testing 720p mplayer tv:// -tv driver=v4l2:device=/dev/video2:width=1280:height=720:fps=60:outfmt=yuy2 # 1080p mplayer tv:// -tv driver=v4l2:device=/dev/video2:width=1920:height=1080:fps=60:outfmt=yuy2