This is actually not something you can guess at. While Rec709 is pretty standard. I myself always grade in Rec709, 2.2 gamma. But I also know a lot of colorists who grade in P3 color space with a 2.6 gamma. That is the standard color space and gamma for DCI. I do Rec709 2.2 because all my work goes for broadcast, DVD, Blu-Ray, Web streaming and Theatrical. Rc709, 2.2 gamma can be easily converted in all DCP creating software. But if you guess, and your wrong, it ain't pretty. Even if you guess Rec709 and you are right, but he used a 2.4 gamma curve, the picture will be way off.
I went to a screening of a movie I color corrected some years back and instead of using me for the DCP the producer had a friend do it for free. I had no knowledge of this or communication with the DCP creator until the screening. He guessed wrong and it was a huge disaster.
Check with the colorist and finisher.

Tom Rovak CSI- Executive Producer / Sr. Colorist / Post Production Supervisor
ROVAK COLORIST SERVICES
Commercials, Feature Films, Music Videos, Long Form
Color Correction, Dailies, Editorial, Finish/VFX
trovak@comcast.net
(815)690-8323
IMDB: http://www.imdb.com/name/nm1652946/?ref_=rvi_nm
Website / Commercial Reel: http://colorist-rovak.com/
YouTube Channel / Reels: https://www.youtube.com/channel/UCNTzBTECwt5K3wkqUjMN-UA
Music Video Reel: https://vimeo.com/208990644?utm_source=email&utm_medium=vimeo-cliptranscode-201504&utm_campaign=29220
 


On July 4, 2017 at 4:12 PM Carsten Kurz via DCPomatic <dcpomatic@carlh.net> wrote:

rec709 is a good guess. Is it HD resolution, or SD?

10Bit AVI is bit strange, but, maybe they chose this format to get an uncompressed master.

Am 04.07.2017 um 20:31 schrieb Markus Kalb via DCPomatic <dcpomatic@carlh.net>:

Hi

what to select as color space when converting something the filmmaker
announced as.

YUV422 10bit avi

If found lot's of info at [1] which is way beyond my knowledge on the
color spaces topic.

[1] https://en.wikipedia.org/wiki/YUV

--
Markus Kalb
Filmkreis an der TU Darmstadt
Filmfest Weiterstadt

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