How to use an oak camera as a webcam?

edit ：OAK China
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▌ Preface

Hello, Hello everyone , Here is OAK China , I'm your assistant .

This month, several friends want to OAK When UVC For camera , Let's talk about how to use it in this issue ！

OAK The camera can also be used as a webcam . To enable this feature , You can run DepthAI demonstration uvc Application or use UVC Function branch . Make sure to use USB3 Line , Otherwise, in some cases ,USB2 Don't work .

▌ Use DepthAI Demo script

First , install DepthAI.

If you use QT GUI, Please select here UVC Applications .

perhaps , Run directly from the terminal ：

python3 depthai_demo.py --app uvc

▌ Use UVC Characteristic branch

【 course 】 How to integrate OAK-D-Lite Use as a webcam ？

Video link ：B standing -OAK China

# Skip cloning if you already have depthai-python repo
git clone https://github.com/luxonis/depthai-python.git
cd depthai-python
# Navigate to the custom branch
git checkout gen2_uvc
python3 examples/install_requirements.py
python3 examples/rgb_uvc.py

Now? , You can open your favorite conferencing application , Such as Zoom or Slack, Then select... From the webcam selection menu Luxonis Device: UVC Video Contr.

▌ A workaround

at present , There are some problems with the above method . Even in Linux On ,UVC Nodes are not currently applicable to all applications . because UVC representative USB Video Class, Use UVC Pipe open OAK PoE series Our equipment is not good . Another known problem is in Windows operating system Upper use UVC The pipe does not work , because UVC The descriptor . Here's the solution ：

1.Python Virtual camera

One option is to use a virtual camera , Such as pyvirtualcam modular . You need pip Install the package and install its dependencies （ As described in the link ）. Here is a demo code ：

import pyvirtualcam
import depthai as dai
# Create pipeline
pipeline = dai.Pipeline()
cam = pipeline.create(dai.node.ColorCamera)
cam.setColorOrder(dai.ColorCameraProperties.ColorOrder.RGB)
cam.setPreviewSize(1280,720)
xout = pipeline.create(dai.node.XLinkOut)
xout.setStreamName("rgb")
cam.preview.link(xout.input)
# Connect to device and start pipeline
with dai.Device(pipeline) as device, pyvirtualcam.Camera(width=1280, height=720, fps=20) as uvc:
    qRgb = device.getOutputQueue(name="rgb", maxSize=4, blocking=False)
    print("UVC running")
    while True:
        frame = qRgb.get().getFrame()
        uvc.send(frame)

2.OBS forward UVC Data flow

We noticed that , In some applications , such as Discord or Google Meet,Luxonis Device: UVC It won't work . One solution is to use OBS Proxy the flow and use OBS Internal virtual camera . What I'm running is Linux, To make the virtual camera work , I have to install sudo apt install v4l2loopback-dkms（ It's also in Installation instructions I mentioned ）.

( Two ） How to integrate OAK The camera is used as a webcam ？OBS forward UVC Data flow

Video link ：B standing -OAK China

This video will show you how to do this .

3.OBS Capture cv2 window

Another solution is to transmit the video stream data to the host , And capture cv2.imshowOBS Windows in ：

• stay depthai-python repo Inside , function python3 examples/ColorCamera/rgb_video.py. This will open a display 1080P New window for video streaming .
• stay OBS in , Under the source menu , single click +, Add new source .
• Click on Window Capture (Xcomposite) Options , And then choose video.
• then , You can click Start Video Camera stay OBS Inside , Use from OAK PoE equipment As a webcam source .

（ 3、 ... and ） How to integrate OAK PoE The camera is used as a webcam ？

Video link ：B standing -OAK China

▌ Reference material

https://docs.oakchina.cn/en/latest/
https://www.oakchina.cn/selection-guide/

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