What kind of bandwidth would I need?

[sWiZzLe]

Last night i came across this stream of a Velvet Revolver concert.

The picture and sound quality are superb viewed in fullscreen. Using Netlimiter i found that it need between 80-90k to stream efficiently.
The concert is around an hour and a half and I assume it would be encoded as a wmv file - How large is this file likely to be?

So what im wondering was, what kind of bandwidth would be need to offer this concert to millions of people at once..... or if that's a bit extreme, thousands?

Thanks

 

[Topgun]

according to this, the largest number of online viewers for a single event is 237,000.

Assuming everyone is watching in "high quality" (around 300kbps), we can do a quick estimation:

237,000 x 300 = 71100000 kbps
= 71100 Mbps
= 71.1 Gbps

This is approximately 9GB per second.

if everyone was watching a ~600kbps "near DVD quality" stream like yours, you can double that figure.