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From: drw900@viz.anu.edu.au ("Drew R Whitehouse")
Newsgroups: comp.graphics.visualization,comp.graphics,alt.graphics
Subject: Re: Computer to VCR
Message-ID: <1991May31.100040@viz.anu.edu.au>
Date: 31 May 91 00:00:40 GMT
References: <1991May30.072153.17869@sbcs.sunysb.edu> <1991May30.084541.1@happy.colorado.edu>
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Reply-To: drw900@anusf.anu.edu.au
Organization: Australian National University Supercomputer Facility
Lines: 36

In article <1991May30.084541.1@happy.colorado.edu>, kskelm@happy.colorado.edu writes:
|> In article <1991May30.072153.17869@sbcs.sunysb.edu>, sbarrkum@csserv2.ic.sunysb.edu (Sereno A. Barr Kumarakulasinghe) writes:
|> > 
|> > I want to record whats on a computer screen directly onto a VCR.
|> > If the output is in RGB or mono output how would I get about 
|> > doing this.
|> > 
|> > Would one of those  thingys that take the computer output and enable it
|> > to be viewed on a TV screen do the trick (what are they called).
|> 
|>      A GenLock, and YES.

	You wouldn't happen to an amiga person, or maybe SGI ? In
general a genlock is NOT all you need, unless you happen to be lucky
enough to have a machine that already can generate NTSC/PAL signal. If
you are, you need an RGB->composite covertor (and possibly a genlock
).

	If you don't have a machine that produces video signal you
need a "scan covertor" that filters a hires signal down to video
resolution and put's it in a NTSC/PAL format. (quite a bit more
expensive than a genlock). Sometimes another alternative (depending on
your application) is to buy another framebuffer for your machine that
produces video (eg Vista boards for PC's).

Drew

PS anyone, correct me if I'm wrong, I just going through all this
myself.  Anyone care to explain the difference between a sync signal
and a BB (blackburst) signal.

// Drew Whitehouse,                E-mail:  drw900@anusf.anu.edu.au 
// Visualization Group,            Fax   : +61 (0)6 247 3425 
// Australian National University, Phone : +61 (0)6 249 5985
// Supercomputer Facility.
// GPO Box 4, Canberra ACT Australia 2601.