How to Render NRRGBCamTexture on Quad?

I am trying to render the RGBCamTexture onto a quad, for face tracking purposes, but the quad doesn’t show the video.

this is the code i used
private NRRGBCamTexture RGBCamTexture {get;set;}
public GameObject MyQuad;
void Start()
{
RGBCamTexture = new NRRGBCamTexture();
MyQuad.GetComponent().material.mainTexture = RGBCamTexture.GetTexture();
RGBCamTexture.Play();
}