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10 bits file as master

Posted: Tue Aug 24, 2021 1:33 pm
by MiloszFR
Hello,

Does anyone know how to handle 10 bits original in order to get a good looking DCP, without banding due to conversion in DCP-o-matic?
My master is a prores 422 HQ 10 bits file colorgraded to rec.709 (film shot at 10 bits). When I import it in DCP-o-matic, it displays it as 8 bits, showing huge banding in the skies and waters, and the banding is still there in the exported DCP.
Is there a way to keep the 10 bits image?

Thank you,
Milosz

Re: 10 bits file as master

Posted: Tue Aug 24, 2021 2:06 pm
by carl
Is there a way you could make a short clip of your original and send it to me for testing? It only needs to be a few frames.

carl@dcpomatic.com

Re: 10 bits file as master

Posted: Wed Aug 25, 2021 4:08 pm
by MiloszFR
I just send you a link to download via email,

Thanks!

Re: 10 bits file as master

Posted: Sun Aug 29, 2021 10:49 pm
by carl
Thank you. When you say it's still there in the exported DCP, are you looking at it on a PC, or in a cinema? Also, are you using Windows, macOS or Linux? What software are you watching your .mov in to see no banding?

Re: 10 bits file as master

Posted: Sat Sep 18, 2021 8:29 pm
by MiloszFR
I'm looking on the exported DCP on macOS with DCP-o-Matic Player. The original .mov doesn't have banding whatever software I use to play it. Adobe Premiere, davinci Resolve, VLC...

Re: 10 bits file as master

Posted: Wed Sep 22, 2021 1:13 pm
by IoannisSyrogiannis
I don't know if the matter is resolved, but you could import the MXF video file from the DCP to those programs and check if that banding is apparent.
I am not 100% sure that will show you what is to be seen on screen, but it will be a mean to compare...

Re: 10 bits file as master

Posted: Sat Oct 02, 2021 1:07 pm
by MiloszFR
Great! I did import the mxf to another program and it looks just fine. So the matter was just the display inside DCP-o-matic Player.
Thank you!