Rec.709-to-P3 under the hood?

Anything and everything to do with DCP-o-matic.
adrjork
Posts: 2
Joined: Sun Apr 29, 2018 4:36 pm

Rec.709-to-P3 under the hood?

Post by adrjork »

Hi everyone.
When I import a file to be converted, D-O-M asks me the color space (in my case 709), then it converts into DCP. Question is: the DCP produced is a rec709-DCP or a P3-DCP? (i.e. does D-O-M convert automatically a 709 file into a P3-DCP?)
Thanks a lot
Carsten
Posts: 2804
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: Rec.709-to-P3 under the hood?

Post by Carsten »

A DCP per definition is always XYZ color. DCP-o-matic does the necessary conversion if you use a supported content colorspace. rec.709 is supported, so all is well.

P3 is not the DCP colorspace, but an RGB display colorspace that is typically being used for DCP grading/mastering and cinema projection. Many people confuse XYZ and P3.

e.g.
source: rec.709
DCP: XYZ
DCI projector: P3

When the server plays a DCP, it will read XYZ from the DCP and usually convert XYZ to P3, then sends P3 to the projector.

- Carsten
adrjork
Posts: 2
Joined: Sun Apr 29, 2018 4:36 pm

Re: Rec.709-to-P3 under the hood?

Post by adrjork »

Finally a very clear answer! Thanks so much Carsten!