Apple Video System - Manual (Page 80)

You have a dark or “rolling” picture.
m Adjust the video screen controls. (Choose Show Controls
Window from the Windows menu and click the video screen
icon.)
m If you have a VCR connected to your video input card, make
sure you’re not having a problem with the videotape or the
VCR itself. (Connect the VCR back to your TV and play the
tape to see if the image is still bad.)
m If your VCR is connected to a TV monitor and to the video
input card, make sure that your cables go in this order: the
first cable must go from the Video Out port on the VCR to
the video in port on the TV monitor; the second cable must
go from the TV monitor video out port (or loop-through
video input port, whichever your TV monitor has) to the
computer’s video input card. (The connection must end at
the video input card, not the TV monitor.) Also check that
your TV monitor is set to loop-through (also known as
“Hi-Z”) input.
The sound is intermittent or clipped.
m Turn down the volume controls on your video equipment.
They may be set too high for the video input card.
m The voltage output of your video equipment may be too
high for the video input card. Therefore your video
equipment may be sending signals that are too strong for the
video input card. Try connecting different video equipment
to the card.
The sound is full of static.
m Be sure your video equipment is securely connected to the
appropriate ports on the video input card.
74 Chapter 4