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Custom Graticule Import

COW Forums : Cubix

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Paul KorverCustom Graticule Import
by on Mar 9, 2012 at 4:37:11 pm

We need to create some custom Graticules to do pan/scan prep for 4K ARRILASER film recording. Has anyone done this?

I'm assuming we just create the a custom Graticule Matte in Photoshop and save off as PNG/DPX/TIFF that we could bring into Resolve and would have precise framing lines that we can superimpose on our picture to set precise pan/scan setting. Then turn off / remove the graticule from picture and render out properly "prepped for ARRI" DPX sequence.

We already know all the pixel dimensions just wondering about the process of creating/importing the graticule alpha matte.

-Paul

EP / Partner - Cinelicious
http://cinelicious.tv/


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Juan SalvoRe: Custom Graticule Import
by on Mar 9, 2012 at 5:27:54 pm

In Resolve for Mac at least, I am not aware of anyway to do this. There is a safe area option... Which is customizable to some degree, but I'm not aware of a method for overlaying a graticule still onto the format viewer. You could make a dpx, bring it in and grab a still. Then toogle that still as a way to check. Assuming that you aren't able to get the safe area settings to suit you.

EDIT: I just checked in the file system (within the app and in Applicatin support, couldn't find any references to graticule or markers, safe area, etc) seems the safe area markers are generated within app, so you couldn't even reverse engineer into it by replacing the source images.

Sorry.


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Eric JohnsonRe: Custom Graticule Import
by on Mar 9, 2012 at 5:54:09 pm

I haven't had a need for it since switching form AJA to BMD, but could you not create the file (say pang w/ alpha) and put it over the image via DS keyer? Or is that another feature lost by having to use Decklink?

That way it would never impact your Resolve processing... and it would be super easy to turn on and off....


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Juan SalvoRe: Custom Graticule Import
by on Mar 9, 2012 at 5:59:28 pm

Cool idea. But the decklink card would be unable to do this if being used by resolve. He could have a device down the line add that. The original videohub was able to do this as well.



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Eric JohnsonRe: Custom Graticule Import
by on Mar 9, 2012 at 6:15:41 pm

I always do this in the AJA control panel when onlining, for bug clearance.... It's proved time and time again to be super helpful.

I wish BMD would take a stronger look at some of the things their competition are/have been doing....


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Joseph OwensRe: Custom Graticule Import
by on Mar 9, 2012 at 8:18:41 pm

Most professional level grade monitors have programmable hash marks.
Zero-load on the processing in that case.

jPo

You mean "Old Ben"? Ben Kenobi?


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Paul KorverRe: Custom Graticule Import
by on Mar 10, 2012 at 1:42:23 am

We do have a 23" HD Sony BMV Grading LCD monitor which has some graticule presets and probably some customizable settings... but our timeline setup in resolve is 4K 4096x3112 so may be difficult to gauge exactly since it will be pillar box coming into the monitor full ap.

We're going to do a goofy work around where we make the lines in Photoshop and bring those in as and "offline" version then do the 50% fade up to reveal the line. I agree it would be great to bring in an some sort of a custom alpha for this.

-Paul

EP / Partner - Cinelicious
http://cinelicious.tv/


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Gabriele TurchiRe: Custom Graticule Import
by on Mar 10, 2012 at 5:42:34 am

paul ,
you work on 4K project in resolve ?
and it actually work ?

every time i have tried it always game error (GPU exhausted ) every 15 sec (and i have 3x GTX470 ...

g

Davinci Resolve Control Surface
MacPro
Cubix desktop 4
2 Red Rockets
GTX470+GTX470+GTX285
24GB RAM
HP Dreamcolor
Panasonic 58PF Plasma


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Juan SalvoRe: Custom Graticule Import
by on Mar 10, 2012 at 8:42:29 am

You need more gpu ram. Turns out you need at least 3gb of gpu ram to reliably do 4k. Though I've managed to do limited projects with 1.5gb.



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Gabriele TurchiRe: Custom Graticule Import
by on Mar 10, 2012 at 8:54:48 am

i hope that next NAB the deckling 4K will be officially launched to be working on resolve (new V9 hopefully ) on 4K projects ...

g

Davinci Resolve Control Surface
MacPro
Cubix desktop 4
2 Red Rockets
GTX470+GTX470+GTX285
24GB RAM
HP Dreamcolor
Panasonic 58PF Plasma


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Juan SalvoRe: Custom Graticule Import
by on Mar 11, 2012 at 3:08:29 am

I suspect it would already work with v8.2. The xyz toggle is already there. Just waiting for the card to ship. Bigger issue is bus speed. Need pcie 3.0. New Mac pro or pc



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Gabriele TurchiRe: Custom Graticule Import
by on Mar 11, 2012 at 3:20:14 am

i did not know that the deckling 4K need PCIe 3.0...
g

Davinci Resolve Control Surface
MacPro
Cubix desktop 4
2 Red Rockets
GTX470+GTX470+GTX285
24GB RAM
HP Dreamcolor
Panasonic 58PF Plasma


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Rohit GuptaRe: Custom Graticule Import
by on Mar 11, 2012 at 5:58:10 am

http://www.blackmagic-design.com/products/decklink4k/techspecs/

PCI Express 8 lane, compatible with 8 and 16 lane PCIe slots.


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Gabriele TurchiRe: Custom Graticule Import
by on Mar 11, 2012 at 6:20:02 am

mmm...wondering if would work from the cubix chassis ...

g

Davinci Resolve Control Surface
MacPro
Cubix desktop 4
2 Red Rockets
GTX470+GTX470+GTX285
24GB RAM
HP Dreamcolor
Panasonic 58PF Plasma


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Juan SalvoRe: Custom Graticule Import
by on Mar 11, 2012 at 6:31:56 am

It doesn't require pcie 3.0. I'm thinking that real 4k performance will benefit from pcie 3.0 for the gpus.



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