Webcam not working with Orange Pi PC

Bobtoprint · October 6, 2020, 3:50pm

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

eight_heads · November 5, 2020, 4:57am

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

Marcin_M · February 20, 2021, 3:13pm

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

PrintedWeezl · February 20, 2021, 3:22pm

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

Marcin_M · February 20, 2021, 3:53pm

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.

PrintedWeezl · February 20, 2021, 4:22pm

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

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

Marcin_M · February 20, 2021, 4:26pm

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

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

PrintedWeezl · February 21, 2021, 4:26pm

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

DoctorEvil30564 · July 21, 2021, 5:14pm

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

meie1kyl · November 28, 2022, 1:16am

Sorry to bring this post back from the dead, I'm trying to get this setup and have finally successfully viewed the camera from octoprint but only while doing it manually with the commands below:

cd mjpg-streamer/mjpg-streamer-experimental
sudo ./mjpg_streamer -i "./input_uvc.so -d /dev/video1 -r 1280x960 -f 30" -o "./output_http.so"

FYI I'm running an orangepi 3 LTS with Debian Buster directly from orangepi.
Logitech C270 camera.
I have tried the script, following Foosel's documentation with the modifications suggested in this thread and have not been able to successfully view my stream. I'm not sure what I'm doing wrong. Below is my current script. Any recommendations?

meie1kyl · November 28, 2022, 2:59am

Well. Stupid mistake. I blindly copied and pasted the script and edited from that point, failing to notice the formatting was all messed up in my script. I corrected the formatting and the camera now works. See below.