nanog mailing list archives

Re: FTTH Active vs Passive


From: Chris Hills <chaz () chaz6 com>
Date: Tue, 01 Dec 2009 22:57:40 +0100

On 01/12/09 20:06, Byron Hicks wrote:
These were the numbers presented at an Internet2 meeting about the 4k
testing happening between UCSD and UW.   I'm not sure what compression
algorithm they were using for the test.

http://www.bbc.co.uk/blogs/bbcinternet/2008/09/super_hi_vision.html

"The Italian broadcaster, RAI, demonstrated satellite broadcasting of
SHV at 140 Mbit/s from Turin to IBC."

Super Hi-Vision has a resolution of 4320x7860 (and also carries 22.2
channel sound). IIRC the video codec used was Dirac.

From the Dirac website:-

"In our first experiments, we managed to get excellent picture quality
at 128Mb/s, which sounds huge but is equivalent to just 4Mb/s for HDTV."



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