P3D Re: sequential field video question

[Greg Kintz <gkintz@xxxxxxxx>]

> Don wrote:
> Hi all,
> Does anyone know much about working with sequential field video?  My
> question is whether it is possible to accidently reverse the stereo
> effect when editing the video onto another machine.  I just got one of
> the Nu-Vision camcorder adaptors and I'm beginning production of TITANIC
> 2 (This Time the Ship is Pissed) :-).  But seriously, folks, is this a
> concern or am I just being paranoid?
>
> Thanks,
> Don

Unfortunatly yes, this can happen, although devices that can cause a
"field-flip" so to speak, are few.  I've run into at least one TBC (Time
Base Corector) that flips the stereo image, and one of the Sony DVC
editing decks has been reported to do "fields-flips".  ...Apparently
with this certain DVC deck, when the video is converted to digital,
you have a 50/50 chance of getting the stereo field order correct.
My strong suggestion is to run a 3-D stereo test pattern through
your various equipment to look for any field-flipping gremlins.


    -Greg-


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