DCP/Delivery page

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waltervolpatto

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DCP/Delivery page

PostSat Jan 25, 2020 8:38 pm

please decouple the DCP creation from the [timeline setting] in the color page, those settings are used for two different tasks ad they are conflicting..

put a checkbox with the option to use either:
1) [timeline setting] (as for now)
2) nothing (the operator will use the color page for that)
30 duplicate the [ofx color transform] so the operator can take advantage of it.
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Jim Simon

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Re: DCP/Delivery page

PostSun Jan 26, 2020 3:22 pm

You can export a DCP from Color? You don't need to go to Deliver?
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waltervolpatto

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Re: DCP/Delivery page

PostSun Jan 26, 2020 8:57 pm

Jim Simon wrote:You can export a DCP from Color? You don't need to go to Deliver?



not that I know of, you have to go n delivery, besides, the issues mention ed will remain.
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Re: DCP/Delivery page

PostMon Jan 27, 2020 4:20 pm

waltervolpatto wrote:please decouple the DCP creation from the [timeline setting] in the color page


Well, now I'm confused. If you can't create a DCP from Color, what does that above mean?
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Re: DCP/Delivery page

PostTue Jan 28, 2020 10:55 pm

Even when you're not in RCM, the timeline color setting serve two purposes:

In delivery, for the creation of the dcp
In color for the color transformations back and forth, especially at the node level.

Those are incompatible.
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Jim Simon

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Re: DCP/Delivery page

PostWed Jan 29, 2020 6:54 pm

I'm still lost. I'm just gonna beg off this one.
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Re: DCP/Delivery page

PostThu Jan 30, 2020 4:53 pm

Jim Simon wrote:I'm still lost. I'm just gonna beg off this one.


It is complicate.

1) lets say that you set the timeline color to rec709/gamma2.4. When you export a DCP, resolve will implicitly convert rec709/gamma2.4 to XYZ/2.4 all is good, IF AND ONLY IF you where looking and coloring to a rec709/gamma2.4 screen, if by any chance you where correcting on a P3DCI white point projector, the conversion will be wrong.

2) but, let’s say that you want to use that setting in the color phase. I have an Alexa camera, and my color space is AlexaLogC. Let’s say that I want to take advantage of the very convenient right click menu in a node that convert the color space I use for my coloring to (for example) linear light. Very simple, I do right click, [linear] (or Lab, or whatever) and do my correction/effect, whatever.
What really is happening under the hood, resolve use the Timeline setting to go from the coloring space to [linear] in my example, and if I want to do it correctly, I have to set the [timeline color] to AlexaLogC.
Same for the default in [ofx color space transform]... they obey to [timeline coilor] setting and in my case, if i want to uniform a timeline color space I need to set it up to AlexaLogC.

If you have the color space in AlexaLogC and you got to the final display (let’s say P3DCI) with a look/LUT/whatever, and you attempt to do a DCP, the math in the delivery page will be AlexaLogC to XYZ/2.6..... being completely wrong....

There is that....
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Re: DCP/Delivery page

PostSat Feb 01, 2020 4:11 pm

waltervolpatto wrote:lets say that you set the timeline color to rec709/gamma2.4.



Ahhh.

That's one of the reasons I prefer ACES. I find the ODT a simpler method.
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Re: DCP/Delivery page

PostSun Feb 02, 2020 3:00 am

Jim Simon wrote:
waltervolpatto wrote:lets say that you set the timeline color to rec709/gamma2.4.



Ahhh.

That's one of the reasons I prefer ACES. I find the ODT a simpler method.


ODT might also generate non visual matches on some ODT combinations....
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