Question by Hoshina04 · Apr 08 at 10:20 AM · webcamtexture webcam devices

Can't see virtual webcam device on Unity 2019 (Ubuntu 16.0.4)

I successfully loopbacked Web cam devices on Ubuntu 16.0.4. I can played virtual cams well via ffplay software or webamtests.com on Ubuntu 16.0.4. However, when I tried to play it on Unity, the Webcamtexture.device can not told me what is the virtual device's name. At the same time, I can recognized the virtual device name via Linux command : V4L2 --list-devices

Who can tell me what's the difference between " V4L2 --list-devices " and "Webcamtextture.device"on Unity 2019.4.30f1. ? Why Unity 2019 can not recognize the correct virtual webcam device name , but Linux V4L2--list -devices command can show and play the virtual webcam devices name.

I doubted Unity 2019 has some bugs on Webcamtextture.device struct, maybe the bottom API of Unity failed to get the correct webcam devices.

Unity WebCamTexture.devices :

         WebCamDevice[] wcd = WebCamTexture.devices;

         for (int i = 0; i < wcd.Length; i++)
         {
             SetImage(i, wcd[i].name, _testCam[i].Texture);
         }

wcd.Length=5, only 5 real webcam devices were recognized on Unity 2019

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