enterprise live streaming and VOD CDN input.

[mavik]

Hello,
to avoid stress situations for intranets you should stream internally with multicast and not unicast. That requires expensive multicast enabled infrastructure like bluecoats or castify solutions etc. Once setup, you can go up with the bandwidth and do 320x240@300k and even higher. The 15k you mentioned should result in a "stop-Motion" transmission. We -for example- do 480x360@800k for our customers.
If I understand you right you are looking for a solution of a web based "Media Server" that enables your customers to manage their own clips and streams. I favourize a solution from ThomsonReuters that would fit perfekt for your demands.