Hello,

   I am trying to do video recording on a orangepi rk3399 running Armbian on it.
   I have all v4l2 modules loaded in kernel.
   When I connect camera to HDMI input port and investigate /dev/video*  I see no device with capture capabilities.
   Has anybody had experience with video recording on orangepi rk3399 running Armbian or Debian on it?

Thanks,
      Mihaita

Same problem here with the Orange Pi 5 Plus (under Ubuntu).

It would be really great if someone could explain how to perform HDMI video capture.

I think we first need to make /dev/video0 appear.

For now, I have only /dev/video-dec0 and /dev/video-enc0

i'm looking for any documentation/os/library to do that, someone can help us??