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- Path: sparky!uunet!utcsri!devnull
- Newsgroups: alt.hackers
- From: flaps@dgp.toronto.edu (Alan J Rosenthal)
- Subject: Re: Reference needed on NTSC to VGA
- Message-ID: <1992Jul25.123518.17088@jarvis.csri.toronto.edu>
- References: <BrwHJz.EC9@news.udel.edu>
- Distribution: na
- Date: 25 Jul 92 16:35:18 GMT
- Approved: tired@crabby.com
- Lines: 17
-
- william@chopin.udel.edu (Wild William) writes:
- >I am trying to get a decent ref on how to put an NTSC signal (or even the
- >video out signal from my favorite VCR) onto a VGA screen.
- >
- >Hoping to do something which can be manipulated in X or MS windows.
-
- Well, if you want it to go through your vga card you're going to have to get
- something which can digitize the video. I don't know about ibms but cheap
- stuff like this for the mac costs around $700 or something, I think. Yeah NTSC
- encoding has the kind of coding that makes us think of things being digital,
- but it is analogue in the sense that when you get down to the intensities of
- individual pixels, it's the voltage level that tells you the intensity, like
- more voltage is more light.
-
- Otherwise, you might as well mix the signals after your vga board. Like take
- the output from the vga board and the ntsc signal and do something with them.
- But the hardware for this may be more expensive.
-