IOnic3 Video call Integration

I want to integrate one to one video call feature to the Ionic3 project, it should support all platforms like WEB, Android, IOS. I tried so many APIs like VONAGE, PUBNUB-WebRtc, ZohoDesk, OPenTok,Enablex. But all libraries are supporting only mobile platforms through Ionic, those are not supporting on the web. Can anyone help to do this.
thankyou