[Mp4-tech] Video - Tiling multiple video streams

[Raghuram V Pidaparthi]

Hi,
I am new to multimedia streaming applications. I want to 
implement a project :
I want to tile multiple streams in a server received from different 
systems on a  network into a single composite frame in real-time and stream the 
resulting composite stream for a video-conferencing application. Is there 
anyway I can do this using MPEG-4. Can someone give me some leads.
Thank you
Raghu