Unable to see host video in webinar on zoom CustomUI

Hi,
I want to integrate webinar on custom UI but the problem is I am unable to view video of the host if I use MobileRTCVideoView for rendering the video as which I have used for zoom customUI meeting. Only able to hear audio part but unable to see the Video.

Which iOS Meeting SDK version?
5.11.2.3958

Device Specifications

  • Device: [ iPhone 12]
  • OS: [iOS 15.5]