Webcam USB on OctoPrint

Ssh way to configure octoprint usb webcam

This is a simple and complete guide to configure webcam on OctoPrint.

Webcam working on OctoPrint

My configuration and installation of OctoPrint is made following this guide on a Raspberry Pi 3 Model B with a 16GB ssd memory.

SSH

All start from ssh to your machine for example

$ ssh pi@192.168.1.<XXX>

Information about the webcam

Now we need the correct configuration from the webcam, plug the usb and run this command:

$ v4l2-ctl -d /dev/video0 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
 Type: Video Capture

 [0]: 'YUYV' (YUYV 4:2:2)
  Size: Discrete 640x480
   Interval: Discrete 0.033s (30.000 fps)
   Interval: Discrete 0.040s (25.000 fps)
   Interval: Discrete 0.050s (20.000 fps)
   Interval: Discrete 0.067s (15.000 fps)
   Interval: Discrete 0.100s (10.000 fps)
   Interval: Discrete 0.200s (5.000 fps)
...
  Size: Discrete 1280x960
   Interval: Discrete 0.111s (9.000 fps)
   Interval: Discrete 0.200s (5.000 fps)
  Size: Discrete 1280x1024
   Interval: Discrete 0.111s (9.000 fps)
   Interval: Discrete 0.200s (5.000 fps)

Configure

Now we need to configure (with one of the parameter that you list before) and reboot the system:

$ sudo nano /boot/octopi.txt
...
camera="usb"
...
camera_usb_options="-r 1280x1024 -f 9"
...
camera_raspi_options="-fps 9"
...
$ sudo reboot

Now go to the OctoPrint and see the webcam!