🚀 go-pugleaf

In article <1992Nov20.172126.12361@waikato.ac.nz>, ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:
> 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.                                 

I dont follow, from what I learned in Image Processing class, and just talking
with the professor, decompression should take no longer than compression (He
thought that decompression should be fractionally faster).

Is this Hardware?  Dr Sherlock said that at 512x512x256 (gray) that a sun-4
was doing an image in ~ 20 seconds (compression, decompression, rms error
check).

> 
> 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