Build a Peer-to-Peer video page that works across Android, iOS and desktops.

We require a PROPOSAL for the development of a “video chat module” which will allow for live communication between 2 individuals across any device and platform. This will become an extension to our current app which works on iOS, Android and desktop (MAC/PC). Your proposal, to be successful, must include what specific technologies you will employ. For example you may decide that WebRTC will handle the video compression/transmission and you will use X for app interface on iOS and Y for app interface on Android. We need this information so that we can maintain and modify this code in the future. It should be able to be integrated into a MEAN stack environment using a REST API for communication to and from the module, to allow data to be passed and stored to a database. This module will need to display an overlay over the video communication which will allow for user control of the app but also allow for external control via an API E.g being able to close the communication remotely and send messages to the users.