https://www.ncnynl.com/archives/201607/266.html
Logitech Pro 9000
如果拍照黑屏
root@raspberrypi:/home/pi# fswebcam -p YUYV -d /dev/video0 -r 640x480 1.jpg && scp 1.jpg root@192.168.2.133:/volume1/photo
--- Opening /dev/video0...
Trying source module v4l2...
/dev/video0 opened.
No input was specified, using the first.
--- Capturing frame...
Captured frame in 0.00 seconds.
--- Processing captured image...
Writing JPEG image to '1.jpg'.
