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Article View: comp.sys.amiga.tech
Article #13855

Re: Amiga video digitizers

#13855
From: Robert Gutierrez
Date: Fri, 23 Feb 1990 07:43
60 lines
3076 bytes
> Well, the time has come to hack some video.  What is the current state of
> affairs when it comes to Amiga video digitizers: (dumb questions, I suppose)
[...]
> 	4. Can someone explain the "Toaster" and whether it exists? 

It exisits in somebody's deranged mind.

I saw what Newtek was representing as a 'Toaster', but it could have
very easily been a processor board for an IBM-3090 with BNC connectors
super-glued on.

I saw the output for a 'Toaster', but the machine underneath the display
could have been an Ampex DVE machine.

I've seen promises of a 1988 release date, but, what year was this again....

> 	5. Who makes deep pixel frame buffers (eg 24 bits or more) frame
> 	   buffers for the Amiga?

Minmetics Framebuffer & capture option (expensive) will save in 24bit
RGB format. Digiview will save in a 21bit format, but that's not a
framebuffer, unless you have a Time Base Corrector and a color splitter
like I do :-)  Also, very expensive.

> 	6. What is a good color camera to use?  Would prefer one of those
> 	   small CCD units over a camcorder type setup (have one already).

Would stay away from a CCD camera, unless it's the 3-chip variety. Again,
very expensive. Since you only want a camera, you are probably better
off in finding one of the old tube variety, like the old saticon tube
cameras (which were prevelant until the CCD's hit the market). The problem
with the CCD's are usually the pixel arrays on the consumer ones are
280,000 to 320,000. The industrial ones are 350,000 to 380,000, but you'll
only find those on expensive Hi-8 or S-VHS camcorders and expensive 
industrial 3 chip cameras. Don't try to digitize off of VHS though.
You'll be shocked on the lack of quality there is.

If you're intrested in seeing what a good S-VHS digitizing looks like,
ftp to "nsipo.arc.nasa.gov" [128.102.18.20], login in as 'anonymous'
and change directory to 'pub/anime' [just type "cd pub/anime"]. The
file 'robocop.gif' was a freeze-frame on a time base corrector, digitized
on Digiview (640x480, 16 color) with a Sunrize color splitter. It did
not come out that bad at all. Also, the files 'dp??.gif' are from laserdisk,
digitized the same way. Still, there was a lot of dithering, and it does
show real bad when you look close. I did try a regular VHS freeze, and
was soooooo bad.........

Hope this helps.

    Robert Gutierrez
    NASA Science Internet Network Operations.
    Moffett feild, California.



> 
> Advance thanks --
> 
> 					Rick Spanbauer
> 					State U of NY/Stony Brook
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From: gutierre@nsipo.arc.nasa.gov (Robert Gutierrez)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Amiga video digitizers
Keywords: video, hacking, realtime
Message-ID: <43477@ames.arc.nasa.gov>
Date: 23 Feb 90 07:43:39 GMT
References: <5702@sbcs.sunysb.edu>
Sender: usenet@ames.arc.nasa.gov
Reply-To: gutierre@nsipo.arc.nasa.gov (Robert Gutierrez)
Organization: NASA ARC
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