A less expensive ($15,000) version of the Broadcast Videodisc System is manufactured by the EIGEN COMPANY, P.O. Box 1027, Grass Valley, CA 95945. The E igen color disc recorder records individual TV fields on single tracks, thereby reproducing perfect still images when played back. The tracks are recorded in a series of concentric circles on the magnetic disc.
Time Lapse VTRs
Another way to use a slow motion VTR is to record in the slow motion mode and then play the tape back at normal speed. The effect will be a picture of greatly accelerated motion—many times the normal speed. A good slow motion VTR is a very helpful tool for creating slick special effects, since these effects can be edited into the videotape production.
The Panasonic NV-8030 time lapse VTR provides continuous taping of up to 108 hours with a standard 60 minute roll of 1/2-inch tape. The NV-8030 has several selectable speed modes and can record only one single field at a time. This is called the "1-shot" mode. A built-in alarm and alarm memory permit rapid tape search for periods recorded during alarm conditions. This kind of VTR is normally used for surveillance applications but could also be used to produce some interesting production effects.
Since 1/2-inch EIAJ VTR s have been around and standardized for a while, they offer a great deal of flexibility for the lowest cost. For basic b&w production, surveillance, or "video work print" purposes, the 1/2-inch reel-to-reel can't be beat. For more sophisticated video production, particularly color work, the 3/4-inch videocassette systems are more appropriate, and the 1/2-inch videocassette systems are more practical for low-cost program distribution.
So, let's move on to some basic videocassette equipment and explore its operation and set-up.