when I start a video call the green light turns on but the image is black
v4l2-ctl --list-devices:
USB Camera: USB Camera (usb-0000:00:14.0-7): /dev/video0 /dev/video1
after closing video app:
sudo rmmod uvcvideo && sudo modprobe uvcvideo
rmmod: ERROR: Module uvcvideo is in use
how can I get it working?
Please run ffplay /dev/video0, ffplay /dev/video1 and check if you get the same result
Please run fuser /dev/video0. It’ll say something like
/dev/video0: 606564m
now take that number and run readlink /proc/606564/exe, and it’ll tell you the name of the program which has the device open, close it, and then try ffplay again.
closed the app that showed up, green light still on, ffplay /dev/video0 still showing busy
edit: ok force closed app in activity monitor & green light turned off`
ffplay /dev/video0 turns camera on and doesnt give “busy” error but camera app still shows black screen
edit 2: works!
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