Hi,
The Evostream Media Server can be used to transfer audio and video streams between clients. You need to provide your own (and/or 3rd party) software on top of EMS to create a video chat service. For example, your application needs to stream webcam video in a format compatible with EMS. You would also need to integrate a player in your application to display live streams. The EMS provides API commands as well as Event Notifications to interact with your application software.
Cheers,
Don