The scale of streaming video on the Internet.
ka at pacific.net
Fri Dec 3 08:46:49 CST 2010
On 12/3/2010 8:16 AM, Neil Harris wrote:
> On 02/12/10 20:21, Leo Bicknell wrote:
>> Comcast has around ~15 million high speed Internet subscribers (based on
>> year old data, I'm sure it is higher), which means at peak usage around
>> 0.3% of all Comcast high speed users would be watching.
>> That's an interesting number, but let's run back the other way.
>> Consider what happens if folks cut the cord, and watch Internet
>> only TV. I went and found some TV ratings:
>> Sunday Night Football at the top last week, with 7.1% of US homes
>> watching. That's over 23 times as many folks watching as the 0.3% in
>> our previous math! Ok, 23 times 150Gbps.
>> Yowzer. That's a lot of data. 345 10GE ports for a SINGLE TV show.
>> But that's 7.1% of homes, so scale up to 100% of homes and you get
>> 48Tb/sec, that's right 4830 simultaneous 10GE's if all of Comcast's
>> existing high speed subs dropped cable and watched the same shows over
>> the Internet.
>> I think we all know that streaming video is large. Putting the real
>> numbers to it shows the real engineering challenges on both sides,
>> generating and sinking the content, and why comapnies are fighting so
>> much over it.
> You might be interested in the EU-funded P2P-NEXT research initiative,
> which is creating a P2P system capable of handling P2P broadcasting at
> massive scale:
Veetle uses p2p too. It's stream isn't quite 'light speed'; perhaps 30
> -- Neil
> (full disclosure: I'm associated with one of the participants in the
Pacific Internet - http://www.pacific.net
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