#More PAR Updates!
14-Jan-94 20:06:46
Sb: #37590-#More PAR Updates!
Fm: Terry L. Tabor 71170,1170
To: Brian Jones 73200,1546
Brian, All of the samples I have digitized at the highest quality, I have used
much too high a block rate (i.e., 290 when the largest block size needed was
251) which reduces the ultimate amount of storage available. Still, on the
gigabyte drive, at a block rate of 290 and at the highest quality setting, the
file sizes I have been getting would indicate that you could get almost 5
minutes on the 1 Gig drive. But, and I am not sure if this is a software
problem or some real limita- tion, the PAR software for some reason limits
recording time to times far less than you can ultimately store. That is, it
will reduce your recording time to say 3 and a half minutes even though you
eventually record 5 or 6 minutes without ever deleting any files.
As far as the quality is concerned, I am VERY impressed. Keep in mind
however that so far I have only digitized from VHS using the composite input
and I am displaying on a composite monitor. But to my eye, even at
substantially reduced quality (16 instead of 23) the output is
indistinguishable from the input. And at that quality level, the drive will
hold more than 8 minutes! For simple animation playback I think the times are
even greater because it determines the quality level you need to represent your
image on a frame by frame basis whereas in recording it always records at the
quality factor you tell it.
This weekend I'm going to experiment with recording S-VHS. I'll report back
my findings.
Terry Tabor