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Re: [Openexr-devel] Re: [Openexr] KeyKode offsets
From: |
Daniel A. Fort |
Subject: |
Re: [Openexr-devel] Re: [Openexr] KeyKode offsets |
Date: |
Tue, 12 Oct 2004 13:49:04 -0700 (PDT) |
Hi Florian,
> A) DPX-style film edge codes, as listed in section 6.1 of SMPTE 268M,
> "File Format for Digital Moving-Picture Exchange":
SMPTE 268M? Just ordered it ($30) so I can try to understand this one. I
would think that this would be the best choice for OpenEXR.
> B) "Film feet edge numbers" as specified by SMPTE RP 195, "Use of the
> Reference Mark in Manufacturer-Printed Latent Image Key Numbers
> for Unambiguous Film Frame Identification". This numbering
> scheme covers 35mm and 65mm film with key numbers occuring every
> 64, 80 and 120 perforations, and with 3, 4, 8 and 15-perforation
> frames. (If you are voting for this one, please explain to me how
> the scheme works. After reading RP 195, I still don't understand
> it.)
This is the way I was taught to identify film frames. After reading the
document I would say that this is what all negative cutters, film
assistants, telecine operators, etc. understand.
These resources will help illustrate SMPTE RP 195:
http://www.kodak.com/US/en/motion/products/keykode/diagrams.shtml
http://www.davsys.com/PDF/flex1007.pdf
http://www.evertz.com/resources/3perf.pdf
Note: Sorry if this message went out twice--seems like I hit the wrong
button when saving the draft.
--Dan
Re: [Openexr-devel] Re: [Openexr] KeyKode offsets,
Daniel A. Fort <=
Re: [Openexr-devel] Re: [Openexr] KeyKode offsets, Ken McGaugh, 2004/10/14