How to use usb webcam in H3??

How to use usb webcam in H3??

Because I use python opencv

>> cap = cv2.VideoCapture(0)

It doesn't capture webcam

How to solve this problem??

Ipodslessteven (talk)

Hi

I write information when I checked the usb webcam using Yocto v2.23.0.
I don't understand your detailed environment, but I am glad if this is helpful for you.

Environment:
- H3 Starter Kit
- Yocto v2.23.0
- USB Webcam Logicool C920t

1. Enable the following kernel config.
        Device Drivers --> Multimedia support  ---> [*] Media USB Adapters
                [*] USB Video Class (UVC)
                [*] UVC input events device support (NEW)

2. Modify the gstreamer1.0-plugin-vspfilter
 # vi gst/vspfilter/vspfilterutils.c
   {GST_VIDEO_FORMAT_UYVY, V4L2_PIX_FMT_UYVY, V4L2_MBUS_FMT_AYUV8_1X32, 1},
+  {GST_VIDEO_FORMAT_YUY2, V4L2_PIX_FMT_YUYV, V4L2_MBUS_FMT_AYUV8_1X32, 1},

3. bitbake

4. How to run
 Ex)
 # gst-launch-1.0 v4l2src device=/dev/video16 ! video/x-raw,width=1920,height=1080 ! vspfilter ! video/x-raw,format=BGRA ! waylandsink

 * videoN: Please set according to your environment.
   Ex) In case of M3 SK it was video8.

Ygohda (talk)

My environment : - Yocto v2.19.0 - USB Webcam logitech HD WEBCAM C525

I refer https://elinux.org/R-Car/Boards/Yocto-Gen3/OpenCL & https://elinux.org/index.php?title=R-Car/Boards/Yocto-Gen3&oldid=449821

sorry I don't know where can I revise the code you say in the first 1. Enable the following kernel config.

       Device Drivers --> Multimedia support  ---> [*] Media USB Adapters
               [*] USB Video Class (UVC)
               [*] UVC input events device support (NEW)

Ipodslessteven (talk)

Please refer to the chapter 2.3.2 of https://www.yoctoproject.org/docs/1.6.1/kernel-dev/kernel-dev.html

Ygohda (talk)

Cdorbell (talk)