Xref: utzoo rec.video:14128 comp.misc:9850
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From: ccw@nvuxr.UUCP (christopher wood)
Newsgroups: rec.video,comp.misc
Subject: Video and computer memory
Message-ID: <1815@nvuxr.UUCP>
Date: 17 Aug 90 22:32:04 GMT
References: <29@meme.stanford.edu> <1990Jul31.204803.25358@eng.umd.edu> <11312@odin.corp.sgi.com>
Reply-To: ccw@nvuxr.UUCP (22456-christopher wood)
Followup-To: rec.video
Organization: Bell Communications Research, NJ
Lines: 20

I decided not to quote the earlier articles, anyway.

The question is, how much computer memory do you need to hold video
information?

Lots of x pixels/line by y lines/frame by z frames per second by q
bits/pixel formulas were suggested.

Picking up a handy reference volume, I discover that "the networks" use
"the telepohone network" to carry their video.  They do this on a
digital channel that carries 45 MegaBITS per second.  I am not sure
about the encoding, but I'm sure that it's clever, but relatively
simple.

Using this number, each minute of video would take up 337 MegaBYTES of
storage.

-- 
Chris Wood     Bellcore     ...!bellcore!nvuxr!ccw
                         or ccw@nvuxr.cc.bellcore.com