Film-Tech Forum ARCHIVE: HELP. color space ? for Dolby DSS200 w/ NEC1200c and realD

This is topic HELP. color space ? for Dolby DSS200 w/ NEC1200c and realD in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Drew King (Member # 6349) on 06-24-2011, 01:56 PM:

I'm operating a Dolby DSS200 with a Real D system.

Within DCC Our TCGD for the DCP macro is DC28_DCI_xenon and the picture looks correct, this is confusing because what I understand DCI content should be XYZ.

I have played about a dozen different DCPs encoded from different vendors and they all look correct using the xenon TCGD. When using the XYZ TCGD the picture is completely out of range looking very pink.

Something is fishy...

I see that the realD Control Module that is mounted in the rack has an LED display that says REC 601 full range which would be wrong since that is YCxCz, but there are no SDI cables routed in our out of the realD so I assume the color space is not being affected here. I also switched the Equalization and Video Settings switch to disable this (the only switch on the front of the Control Module) rebooted and it made no difference.

I need help [Smile]

thanks in advance because I know you folks are going to be able to help me in some sort of way.

[Smile]

Posted by Steve Guttag (Member # 268) on 06-24-2011, 02:39 PM:

You are close but not quite on the dci_xenon (which is normally only used on testing, setup or Dolby 3D). What you really want is DCI(P3) for the Target Color. And the color space should be set to Scaled_240M_0_1023. Note, these settings only apply when using the Dolby brand servers.

-Steve

Posted by Drew King (Member # 6349) on 06-24-2011, 03:21 PM:

FASCINATING! i will respond again once I can test. Thank you!

Posted by Mark Gulbrandsen (Member # 72) on 06-25-2011, 09:25 AM:

Yes, This is but another aspect (of many) of D-Cinema that really needs to be standardized! There are several different color spaces being used for 3-Deee.

Mark

Posted by Danial Simmonds (Member # 4638) on 06-27-2011, 11:42 AM:

So many to remember, Dolby 3D or RealD or Xpand or Etoniq or Masterimage used with Dolby or Doremi or GDC or Cube = this and that color space and target color

I whished the manufacturer or somebody comes out with a chart showing the meaning to everything and what setting is for what.

Posted by Drew King (Member # 6349) on 06-30-2011, 11:36 AM:

I changed the csc setting within the pcf of the dcc software to scaled_240m_0_1023 and the picture looks correct. I don't have any equipment to do any measurements so I cant give any specific feedback.

Is there any documentation that supports these statements of xenon being for testing and the 240m being for dolby servers?

Posted by Steve Guttag (Member # 268) on 06-30-2011, 02:49 PM:

Hey...I'm all the documentation you need! [Wink]

Real-D does indeed have a document that calls out what settings or PCFs they are looking for on the various players.

If you have the TI DLP program and suitable passwords...etc, you can see what changes when each file loads to see what each are doing.