DCTV to tape probs
04-Feb-92 01:21:36
Sb: #15646-DCTV to tape probs
Fm: Bill Forcade 74746,604
To: James Schroder 73670,1546
Jim:
Last year I asked the same question, i.e., my images look great on RGB,
VERY good on my TV or composite monitor, and absolutely AWFUL on VHS/ S-VHS
tape. That same tape records great images from camcorder or cable TV. The
answer given was that 1/2" tape (VHS/S-VHS/Hi-8) is not all that great and
it requires substantial care to get good results. I won't begin to tell you
that I understood the technical explanation; frankly, it still seems
illogical to me. However…..
I started a trial and error process of defining the color combinations
and computer resolutions which produced the best image on my equipment. It
was a long process, but I have been able to significantly improve the
quality of the images I transfer to videotape. It does have quirks (I still
get better images with non-interlace). It is very time consuming (let's
see, 4 resolutions times 4096 colors = lots of trials). It is not much
fun.
Why not try to transfer the DCTV frog image to tape. Does the color
seem good, is it stable? That image looked great on my system. What about
the chess set ? If those two images look good on both TV and videotape
then your system would seem to be working just fine. If those two images
look fine, what happens when you create an animation using the exact same
palette. Do reds look better next to dark colors or light colors, what
about weak pastels? I found a program like PIXMATE to be a great help
because it allows tremendous global color changes to be made easily, thus
easing the experimentation process. Lastly, don't set your expectations too
high. My experience (admittedly limited) has been that great images
require a lot of care and effort to produce on 1/2 inch videotape.
– via Whap!…….from Chicago