Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a708
From: Gord_Wait@mindlink.UUCP (Gord Wait)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: Single Frame recorders
Message-ID: <5252@mindlink.UUCP>
Date: 24 Mar 91 17:29:34 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 31

I appreciate that single frame recording is extremely tough on a video deck,
but I guess you haven't convinced me that it has to be expensive.. Humour me,
here and see if this makes sense:
For my pentax to be able to do the 4 frame insert edit, the tape deck spins up
the heads, does a bit of preroll, and with the accuracy of probably less than a
horzontal line of video starting from the vertcal interval, erases line by line
the existing video track, replaces it with incoming video, and after 4 frames
quits. Upon playback there is no apparent jump in the video, so I assume the
control track is still intact. Since this deck doesn't have a TBC, the output
probably isn't the best, but never the less, the ONLY difference between this
and a Single Frame edit (ignoring color frame problems for now, just mechanical
issues) is that the counter in my camera counts to 4 before it quits, instead
of counting to 1. The other difference, is that lacking time code, I have no
way to accurately start the record at a specific frame, BUT I do have the
mechanical capability to cut in new video starting in the vertical interval and
ending in the vertical interval. By the way, this mode works whether I have
pre-striped the tape with video, (insert edit) or if I start with a blank tape
(assemble). I know that I wouldn't want to try to broadcast the video I get
from this mode, but it is more than adequate for an animation preview. In
summary, I believe that if it the deck is accurate enough to do flying erase
edits, then it is more than accurate enough to do a single frame edit. As to
being hard on the deck, I would much rather wear out an $800 deck than a
$10,000 deck on animation previews. Please correct me if and where I am wrong.
Sincerly, Gord Wait.
--
Gord Wait
Member of Technical Staff
ASIC Engineering
SMOS Systems
Vancouver Design Center
Gord_Wait@mindlink.UUCP