Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!oliveb!tymix!tardis!jms
From: jms@tardis.Tymnet.COM (Joe Smith)
Newsgroups: comp.sys.amiga
Subject: Re: Video Toaster Info-real and current
Message-ID: <996@tardis.Tymnet.COM>
Date: 11 Apr 90 02:52:13 GMT
References: <7668@hydra.gatech.EDU> <28725@cup.portal.com>
Reply-To: jms@tardis.Tymnet.COM (Joe Smith)
Distribution: na
Organization: BT Tymnet, San Jose, CA
Lines: 34

In article <28725@cup.portal.com> Sullivan@cup.portal.com (sullivan - segall) writes:
>Forgive my ignorance, but what is a timecode-base VCR?  Does it need a Genlock
>input?  With all that the Toaster reportedly includes, I would be surprised
>if they didn't include an infinite window time base corrector.  (Isn't that
>what a frame buffer does, and doesn't the Toaster have TWO of them?)  Anyway,
>I've never heard of a VHS recorder that has Genlock inputs.  On input they 
>generally just synch up to the signal source (so that no buffering is required.)
>On output they generally just output a time base synthesized from the recorded
>information, synchronized to the playback speed (which can vary somewhat from
>the standard).  Does this mean that the Toaster can't frame buffer ANY video
>tape inputs from VHS?  
>Please feel free to correct any blatant misunderstandings in the above.

Your assumptions are reasonable for a devices with a single video input.
You can't expect the Toaster to sync up to four independent nonsynchronized
sources at the same time for that price, now can you?

One of the postings said:
	Reference video:
	Composite color or blackburst on video input #1

I read that to mean that the toaster will sync up to the signal on input
#1, but the remaining 3 signals have to also be synced up to the signal
on input #1.  So hooking up a VCR should work, as long as it is the only
input.

There is also an implication that the frame buffers take a lot longer that
1/30 of a second to be updated; therefore they cannot be used as for a
time base correction.
-- 
Joe Smith (408)922-6220 | SMTP: jms@tardis.tymnet.com or jms@gemini.tymnet.com
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