Re: ***WHAT'S A VIDEO SPIGOT????

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Article #1198

#1198

From: Lawrence D'Oliveiro, Waikato Uni...
Date: Fri, 20 Nov 1992 04:21

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In article <1992Nov20.171403.12360@waikato.ac.nz>, ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:
> In article <41224@sdcc12.ucsd.edu>, ma168faf@imath8.ucsd.edu (Matthew Guarnotta) writes:
>>
>>
>>
>> WILL SOMEONE PLEASE EXPLAIN IN DETAIL WHAT A VIDEO SPIGOT IS AND HOW IT WORKS
>>
>> HOW MUCH DO THEY COST AND WHAT SORT OF HARDWARE DO YOU NEED??????
>>
>> DO VIDEO IMAGES 24 BIT TAKE UP A LOT OF HD SPACE....

Forgot to answer your last question: yes, 24-bit colour images certainly
can take up lots of space. That's why image compression services are such
an important part of QuickTime.

I grabbed a sequence of still images at 384*288 resolution from my Spigot,
and the PICT files were around 300K each! By using JPEG compression, I was
able to get these down to 20K or less, with only minor loss of image quality.

JPEG can't be decompressed fast enough to play back a movie, though (unless
you've got some hardware help or a really fast CPU). There are other
compression algorithms provided with QuickTime that are better suited to
compression of movies.

Lawrence D'Oliveiro                       fone: +64-7-856-2889
Computer Services Dept                     fax: +64-7-838-4066
University of Waikato            electric mail: ldo@waikato.ac.nz
Hamilton, New Zealand    37^ 47' 26" S, 175^ 19' 7" E, GMT+13:00

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Path: arc1-ca.pugleaf.net!sparky!uunet!wupost!waikato.ac.nz!ldo
From: ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University)
Newsgroups: comp.multimedia
Subject: Re: ***WHAT'S A VIDEO SPIGOT????
Message-ID: <1992Nov20.172126.12361@waikato.ac.nz>
Date: 20 Nov 92 17:21:26 +1300
References: <41224@sdcc12.ucsd.edu> <1992Nov20.171403.12360@waikato.ac.nz>
Organization: University of Waikato, Hamilton, New Zealand
Lines: 28

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