nanog mailing list archives

Re: FTTH Active vs Passive


From: Byron Hicks <bhicks () ots utsystem edu>
Date: Tue, 1 Dec 2009 13:06:26 -0600

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.

On Tue, Dec 1, 2009 at 12:58 PM, Chris Adams <cmadams () hiwaay net> wrote:
Once upon a time, Byron Hicks <bhicks () ots utsystem edu> said:
4k video feeds (the new High Def):

compressed: 1Gb/s

??

Current over-the-air HD (at a max of 1080i) is up to 19 megabits per
second (and most don't run it that high).  Most cable systems compress
it more.  4k video is roughly 8 times the pixels than 1080i, but is
typically going to be compressed with better algorithms (MPEG4 is
roughly half the size of MPEG2), which would mean 4k video (at TV
quality) would be around 100 megabits per second.

--
Chris Adams <cmadams () hiwaay net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.





-- 
Byron L. Hicks
University of Texas System
512-377-9857
AIM: byronhicks


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