can i send ARCamera view?

hi there, i'm trying to merge webRTC and Vuforia via Unity. first, i can video call via webRTC in Unity. but, i can't using Vuforia because hardware camera is already using resource by webRTC.

so, I'm trying to pass vuforia's view to webRTC. but i don't know how do this.

and i can AR camera view screen capture. that is saved png or jpg file.

sorry about my english. thanks.