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Author Topic: Subtitles cutting off
Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 10:52 AM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
Bottom half of subtitles are being cut off. Movie is 4K scope. When I play the movie in 2K scope, subs are fine. It's not the cropping. I removed any just to see. All the macro settings are exactly the same for 2K and 4K scope except for the source file obviously. Projector is a Christie CP4220. Server is GDC SX-3000. When I put up the safe image test pattern, the subs that are cut off are down in the red area, outside the safe image area.

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Stephan Shelley
Jedi Master Film Handler

Posts: 854
From: castro valley, CA, usa
Registered: Nov 2014


 - posted 02-17-2018 11:25 AM      Profile for Stephan Shelley   Email Stephan Shelley   Send New Private Message       Edit/Delete Post 
Are you sure it is a 4K DCP? It is a common problem to have subtitles of a 2K DCP in the wrong place when playing back in a 4K macro.

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 12:20 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
I've seen that too. It says 4K on the DCP and the information tab on the GDC has it as 4096 X 1716.

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Dave Macaulay
Film God

Posts: 2321
From: Toronto, Canada
Registered: Apr 2001


 - posted 02-17-2018 12:35 PM      Profile for Dave Macaulay   Email Dave Macaulay   Send New Private Message       Edit/Delete Post 
haven't tried a 4K Christie but I believe Barco 4K needs a 4K scope PCF to position 4K scope DCP subtitles correctly.

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 12:54 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
Tried it. Still no good. I'm just going to run it in 2K for now. BTW, while in 4k macro, all trailer's subtitles played fine. It was only the feature that the subs are cut off.

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Stephan Shelley
Jedi Master Film Handler

Posts: 854
From: castro valley, CA, usa
Registered: Nov 2014


 - posted 02-17-2018 02:21 PM      Profile for Stephan Shelley   Email Stephan Shelley   Send New Private Message       Edit/Delete Post 
What PCF are you using or if not using a PCF what screen file.

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 02:36 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
I'm using a 4096 X 1716 2.39 Scope screen file but I also tried switching to a DC4K_DCDM_XYZ_239 PCF file. There was no change.

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Stephan Shelley
Jedi Master Film Handler

Posts: 854
From: castro valley, CA, usa
Registered: Nov 2014


 - posted 02-17-2018 02:53 PM      Profile for Stephan Shelley   Email Stephan Shelley   Send New Private Message       Edit/Delete Post 
You could try auto square pixels screen file or the auto PCF if there is one.

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 02-17-2018 02:59 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
Is this an interop DCP? You may transfer one of the subtitle folders xml files to a computer and check the positioning metadata. That should tell you wether it's equipment, or DCP related. If you say that the titles are in the red area, that area SHOULD still contain visible image content. So, if the titles are cut off there, it must be the cropping or the masking (or the lens setting)?! Yes, maybe the subtitle positioning for this feature may be a bit sharp. I assume that where the subtitles are cut off, you can see no image content as well?

- Carsten

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 03:47 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
Correct, no image at all where the subs are cut off. Projector masking (cropping) is off.

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 02-17-2018 04:26 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
If cropping is off, how can there be red in the test chart where the subs are cut off?

- Carsten

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 04:38 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
The subs are cut off right where the safe image ends outside of the scope area on the pattern.

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 02-17-2018 06:33 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
Don't know that specific test pattern - usually, the 'safe area' is well within the visible image area. If that red border in your test clip is actually outside of the 2048*858/4096*1716 scope frame, than they are indeed positioned too low, and that red area is an 'invisible area'.

- Carsten

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Richard May
Phenomenal Film Handler

Posts: 1057
From: Floral Park, NY USA
Registered: Aug 2004


 - posted 02-17-2018 06:54 PM      Profile for Richard May   Email Richard May   Send New Private Message       Edit/Delete Post 
Correct. The red area should have no content. Too bad I don't have another 4K movie with subs. I will just run it in 2K for now.

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Carsten Kurz
Film God

Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 02-17-2018 07:32 PM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
The SX-3000 should have it's own server-side subtitle engine. Do you know wether the SX-3000, or the Christie is configured to render the subtitles?

- Carsten

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