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- From: km2a+@andrew.cmu.edu (Kenneth E. Mohnkern)
- Newsgroups: comp.multimedia
- Subject: Re: Computer controlled VCRs
- Message-ID: <Uf2EwcS00WALI1Pkd4@andrew.cmu.edu>
- Date: 17 Nov 92 05:26:32 GMT
- Article-I.D.: andrew.Uf2EwcS00WALI1Pkd4
- Organization: Robotics Institute, Carnegie Mellon, Pittsburgh, PA
- Lines: 38
- In-Reply-To: <1992Nov16.205227.16123@tigger.jvnc.net>
-
- Excerpts from netnews.comp.multimedia: 16-Nov-92 Computer controlled
- VCRs by I. Systems@tigger.jvnc.n
-
- > Controlling a VCR from a PC.
- > Can anyone help with how to do this? What are my options? Can I use any VCR?
- > Or do I need a special machine? If so where do I get it? I'm looking to be
- > able to perform very simple functions (play, pause, fast forward, rewind...)
- > on a standard home VHS machine, to the extent possible. I'm also hoping for
- > a fairly simple solution, to the extent possible. Can a computer read the
- > VHS sync track, or do i need a seperate time code on one of the audio tracks?
- > And as for controlling it, is there a way to do this through the infra red
- > remote technology already built into the VCR?
- > All help in this matter is greatly appreciated.
- > Thanks,
- > Jay
-
- A year ago when we were looking into this, our only option was NEC's
- PC-VCR. It takes commands through the serial port on our Mac, but also
- will work with a PC. It understands a whole mess of commands from simple
- play/stop to commands I could never imagine giving it. And it worked
- just like it should have. You have to add another synch stripe to the
- tape, which is put somewhere on the tape where it doesn't interfere with
- a current synch track or either audio track (or, obviously, the video
- track).
-
- The bad news is that it works like a vcr. Your program sends the Play
- command out to it. It plays the tape a couple seconds to read the
- control track, scans forward or backward to the right neighborhood
- (several more seconds), then plays a couple more seconds till it gets to
- the correct spot, pauses, then starts giving you the video. A very
- tedious process to sit through, especially if you're in a training
- session. When a user hits the "Show me the clip" button, they want to
- see it soon. Not 5-7 secoonds later. So it wasn't a good solution for
- us. We've gone to using digital video.
-
- Disclaimer: I'm not affiliated with NEC in any way, nor have I looked at
- the newer versions of the PC-VCR. It's likely that they've sped up the
- machine. You probably want to get more recent opinions.
-