Is a two screen video-conferencing app possible?

Hi all,
I need to build a one-to-one videoconferencing app to support my telemedicine app (presently using whatsapp). Is this possible in MIT App Inventor using the media components?
Or, are there some extensions for this?

See here:

or here

for some ideas

May be easier to use the activityStarter to call via whatsapp/duo/skype etc ?

Thank you! That was quick. Will give Agora a spin. Thanks again.