Getting Webcam Feature on Oak-D Lite working

callexpa

Hey Folks,
today, I got my Oak-D Lite from the KS Campain, but I got an issue when trying to use the webcam/UVC Mode.
I can activate an run it without problems, and if I do, I can also select it in programs like OBS as UVC Video Control, however even if I do select it; it wont load / wont open up.
I am really new to this, and dont know a lot about python, so any help regarding this would be appreciated.

erik

Hello callexpa , just to double-check, did you follow the docs here?
Thanks, Erik

callexpa

erik
Hey Eric.
I have followed the documentaion.
Solution Number 3 offered, does work, however with that solution I can obviously not use it as desired.
When using either the programm to "Run UVC Mode" or the terminal approach with python3 examples/rgb_uvc.py my programs like OBS or Discord does recognise the camera as a viable decive, however they do not recieve any video-stream at all. Discord just keeps loading and OBS does create a zero width window without content.

wrzwicky

I've been trying to get this to work as well. The github is a little confusing due to the "depthai" project being tagged as Python, and "depthai-python" being tagged as C++. And the UVC is on a weird side branch, and everything seems to have it's own install_requirements that is completely different from every other install_requirements. And the demo app even calls yet another install_requirements when you click the uvc button. Yeah I know all this is still in development, still it's a bit of a mess.

Anyways. none of the docuemented options work with OBS. The app claims that uvc is running, but OBS never receives any video.

erik

Hello both,
sorry for all the inconvenience. Which OS are you using? I tested on Ubuntu and just running UVC pipeline (initial option) works with OBS. Also, do you use USB3 cable?
Thanks, Erik

wrzwicky

I'm using Windows 10 and USB2. Turns out all my USB-C cables are for charging, so they don't support SuperSpeed.

fecodoo

Same issue here. The rgb_uvc.py script starts successfully but guvcview only reports back V4L2_CORE: Could not grab image (select timeout): Resource temporarily unavailable. I'm running on Ubuntu 20.04 with GUVCVIEW: version 2.0.6.

callexpa

I use Windows 10 as well.
I dont know what cable type my usb cable is, I tested 2 different ones.
However, the rgb_uvc.py as well as the DepthAI Demo App thing, function seemless without problems, in regards of showing the video.

callexpa

I checked and found a USB 3 cable. I also reinstalled depthai via powershell and reinstalled depthai-python from git. now it seems to work as intended, as far as I can tell
However: The Oak-D Lite keeps refocusing very three seconds, giving a very bad experience. Can I stop that somehow?

wrzwicky

I got mine working!

I just got some genuine USB3 cables, and depthai_demo.py now reports "USB Connection speed: UsbSpeed.SUPER". OBS appears to be pulling the full 4k feed, as it should. However, the UVC controls inside OBS do nothing (i.e. I cannot change the white balance setting.) Also, both depthai_demo and rgb_uvc hang when trying to exit; I need to go into Task Manager and kill Python to get them to exit.

For those still having trouble:

Make sure depthai_demo reports "super" speed, and not "high" speed. "High" is actually the slower USB2 speed, while "super" is the full USB3 speed.
Unplug your cable and plug it back in upside down. Try both ends. (Leave it to the USB consortium to get even this simple feature wrong.) Depending on your device and cable, it may make a difference. (I have an A-to-C cable and I verified it works both ways, but I have an adapter on the way that is reported to only work one way.)
Check your OBS settings - set everything to defaults. If the resolution is wrong, you'll get no picture.