Webcam (using streamer) showing black screen

[anno143]

I am using a digiCam webcam, which works fine on windows.
Also it is detected by RaspberryPi as dev/video0. (I have also used Its microphone for AlexaPi which also works fine)
When i use it with heimcontrol webcam plugin ( i am using streamer) it gives me following output:

I have tried to use different intervals like 10, 20 and 50s but result remains same.
Any idea why?

[nisdis]

What is your destination video size ?
I had a similar issue, which was fixed my mention of destWidth and destheight.