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From: baron@kk.asd.sgi.com (Baron Roberts)
Newsgroups: comp.sys.sgi
Subject: Re: VideoCreator/Vlan example needed
Message-ID: <1990Oct31.024522.2984@odin.corp.sgi.com>
Date: 31 Oct 90 02:45:22 GMT
References: <12AC4B0952BFE00B53@KRDC.INT.Alcan.CA>
Sender: news@odin.corp.sgi.com (Net News)
Reply-To: baron@kk.asd.sgi.com (Baron Roberts)
Organization: Silicon Graphics, Inc., Mountain View, CA.
Lines: 34

In article <12AC4B0952BFE00B53@KRDC.INT.Alcan.CA>, LEE@krdc.int.alcan.ca
writes:
|> We just received a Videocreator with a Vlan unit to
|> control a JVC 811 VCR to try and make video making simple,
|> but now the work has just begun.  We've got to figure out
|> how to make the graphics programs smoothly control the generation
|> of animation.
|> Does anyone have an piece of example code on setting the vcr to
|> pre-roll, grab a few frames and then reposition?  The problem is
|> not the coding, but none of us know much about video, and all the
|> steps a vcr should undergo to get frame acurrate recordings.
|> 
|> Peter Lee    lee@krdc.alcan.int.ca

Here is an sample V-LAN command script to perform a single event edit. This
code will position the tape to the IN point, pre-roll back 5 seconds and record
one frame of video. Note that the comments should not be typed when issuing
the V-LAN commands.

	ND 1		# Select device on network node 1
	TSV		# Indicate that video is to be recorded
	PR 5:00		# Pre-roll 5 seconds
	SI 00:00:16:30	# Set the IN (start) point at tape location 16:30
	SD 1		# Set record duration for 1 frame
	PF		# Perform the edit

When PF is entered the editing takes place. Instead of specifying a
duration with
SD an OUT (end) point can be specified using SO.


Best of luck,

Baron Roberts