Customize Remote video view and local video view using PJSIP lib in IOS

Question

I want to display remote video in fullscreen and local video display small view in right side like whatsapp video call.

   var size = pjmedia_rect_size()
   size.h = 924//UInt32(screenSize.height * 0.9)
   size.w = 624//UInt32(screenSize.width * 0.9)
   let statusWinSize =  pjsua_vid_win_set_size(wid, &size)

Already set this size but not set proper view so i'm stuck in this view Please help me.

Thank you.