IPTV unicast

[cnawfal]

Hello everyone,

I would like to know the feasibility of implementing a solution of an IPTV in unicast here is the problem,

I have 300 mbps from the server and i want to deliver 8 channels , and i dont have lot of clients arout 30.
My problem is :In some POPs, their is just one client connected, and who had 30 Mbps for example. And the rate correspending sent to the DSLAM is 300 since i am using multicast so in this case i think it s better if i can send the IPTV by unicast.

I was thinking about a solution where i can send the TV by unicast, and when i reach some level (i mean number of connected clients in IPTV network) i switch to the multicast.

Can some one tell me if it s a good idea or no.
btw i willing to implement an open source solution.