[133014] in North American Network Operators' Group
Re: The scale of streaming video on the Internet.
daemon@ATHENA.MIT.EDU (Marshall Eubanks)
Fri Dec 3 11:33:12 2010
From: Marshall Eubanks <tme@americafree.tv>
In-Reply-To: <4CF8FBB1.4040708@tonal.clara.co.uk>
Date: Fri, 3 Dec 2010 11:31:27 -0500
To: Neil Harris <neil@tonal.clara.co.uk>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Dec 3, 2010, at 9:16 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.
>>=20
>> 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:
>>=20
>> =
http://tvbythenumbers.zap2it.com/2010/11/30/tv-ratings-broadcast-top-25-su=
nday-night-football-dancing-with-the-stars-finale-two-and-a-half-men-ncis-=
top-week-10-viewing/73784
>>=20
>> 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.
>>=20
>> 3.45Tb/s.
>>=20
>> Yowzer. That's a lot of data. 345 10GE ports for a SINGLE TV show.
>>=20
>> 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.
>>=20
>> 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.
>>=20
>> =20
>=20
> 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:
>=20
> http://www.p2p-next.org/
This already exists in China.=20
http://www.ietf.org/proceedings/77/slides/P2PRG-3.pdf
Regards
Marshall
>=20
> -- Neil
>=20
> (full disclosure: I'm associated with one of the participants in the =
project)
>=20
>=20
>=20
