Webcam not working with Orange Pi PC

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#1

Good day fine 3D printer folk!

I am successfully utilizing Octoprint with my printer for a couple days now but am yet to figure out how to get the webcam stream up and running.

Webcam is a Microsoft Lifecam Cinema.
Board is an Orange Pi PC

I have tried these commands and get:

lsusb
09: USB 00.2: 0000 Unclassified device
  [Created at usb.122]
  Unique ID: O0wn.aiI5bDIMpID
  Parent ID: 2XnU.CpYmifTkid6
  SysFS ID: /devices/platform/soc/1c1d000.usb/usb5/5-1/5-1:1.2
  SysFS BusID: 5-1:1.2
  Hardware Class: unknown
  Model: "Microsoft LifeCam Cinema"
  Hotplug: USB
  Vendor: usb 0x045e "Microsoft Corp."
  Device: usb 0x075d "LifeCam Cinema"
  Revision: "1.00"
  Driver: "snd-usb-audio"
  Driver Modules: "snd_usb_audio"
  Speed: 480 Mbps
  Module Alias: "usb:v045Ep075Dd0100dcEFdsc02dp01ic01isc01ip00in02"
  Driver Info #0:
    Driver Status: snd_usb_audio is active
    Driver Activation Cmd: "modprobe snd_usb_audio"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #22 (Hub)

pi@citrico-opipc:~$ sudo modprobe uvcvideo
pi@citrico-opipc:~$ ls -ltrh /dev/video*
crw-rw---- 1 root video 81, 1 Oct  5 07:17 /dev/video1
crw-rw---- 1 root video 81, 0 Oct  5 07:17 /dev/video0
crw-rw---- 1 root video 81, 2 Oct  5 07:17 /dev/video2
crw-rw---- 1 root video 81, 3 Oct  5 07:17 /dev/video3

pi@citrico-opipc:~$ mjpg_streamer -i "input_uvc.so -r 640x480 -f 30" -o "output_http.so"
MJPG Streamer Version.: 2.0
 i: Using V4L2 device.: /dev/video0
 i: Desired Resolution: 640 x 480
 i: Frames Per Second.: 30
 i: Format............: JPEG
 i: TV-Norm...........: DEFAULT
Error opening device /dev/video0: video capture not supported.
Init v4L2 failed !! exit fatal
 i: init_VideoIn failed

Not the most astute linux user, hope anyone reading this can help!

All the best
Bob

#2

I'm running to the same issue with a Rock64 after installing Armbian and a fresh Octoprint install. Everything is working but the camera.

#3

I found the place where the problem lies.

Oprange PI PC has an HDMI port and I think it uses / dev / video0

you can see 3 devices after connecting the camera
/ dev / video0
/ dev / video1
/ dev / video2

I was able to do a working test using the parameter

sudo ./mjpg_streamer -i "./input_uvc.so -d /dev/video1" -o "./output_http.so"

but i'm stuck on a script to enable streaming

1 Like
#4

Try the script form this guide

change the camera line from auto to usb and add the -d /dev/video1 to the usb cam line

#5

Ok. I have it.

add these three commands in /etc/rc.local before the script to auto start camera

sudo rm /dev/video0
sudo chmod -R 777 /dev
mv /dev/video1 /dev/video0

The first removes the device, the second grants permissions, and the third converts video1 to video0.

It works for me.

2 Likes
#6

lol that's a really dirty hack
but hey if it works :smiley:

I would at least limit the chmod to the devices you're using

#7

i didin't read your message. if change ot this parameter works that is better solution then mine :slight_smile:

ok. i don't really good in linux, I base on tutorials on the net. please provide me a better chmod parameter.

I changed the settings for camera as you described. It works. So I deleted this line's in rc.local

1 Like
#8

tbh I never changed anything in the /dev directory so this is just an idea ^^
I would only chmod /dev/video0 and /dev/video1 and I don't even know if that's necessary at all.
Maybe sudo mv /dev/video1 /dev/video0 would also work

#9

I had the same issue with the rock64 I'm trying to get setup with Octoprint (using the citrico-rock64 image).

this worked perfectly for me.

Thank you