Issue with color when exporting from mac book pro 2018

[nicoler62140801]

On the macbook pro 15" mi-2012 with nvidia graphics 560m, the grading is the same in premiere and the export.

On the new macbook pro with amd graphics, it changes. I've made the same output on both macs with the same specs, the results are different...

[R Neil Haugen]

Your monitor is different, that's the issue. PrPro is designed to show and work in the major pro broadcast standard of Rec709, which is sRGB and PrPro uses gamma 2.4 primarily.

That new Mac rig of yours doesn't have a monitor set for sRGB, and if like most Macs, doesn't really allow easy user choices.

Now ... also ... QuickTime player is notoriously color-stuupid. Don't use it.

For video players, Potplayer and VLC are color aware. Use them.

Next, Firefox is the only browser that is color aware ... use that.

Chrome and Safari are color blind.

Neil

[nicoler62140801]

There's juste one issue with your answer. The files i created on both mac with the same specs ARE different. The ugly one is still ugly on vlc, with red zones, the other one is ok. The issue happens while i transcode them... They should be the same and they're not.

[nicoler62140801]

I mean they are different side to side on the same screen.

[nicoler62140801]

And it's true with grading or without it in Slog.

[R Neil Haugen]

There's some in this post that are unclear and sound different than your first post.

At this point screen-grabs dragged/dropped into your reply box would be helpful.

And, when you view the exports back in PrPro how do they look?

"The issue happens while I transcode them ... " ... a bit more detail there would also help.

Neil

[nicoler62140801]

Thanks Neil for answering to me again.

The files looks different back in Premiere too.

I made two screenshots. It's the same timeline, the same grading, the same specs. The first export was made on my old macbookpro, the second on the new one. I made the two screenshots in Premiere Pro where i imported both files.

Export from Mac Book Pro 2012

Export from Mac Book Pro 2018

[R Neil Haugen]

What is the monitor color space, and what is it calibrated to for each computer?

[nicoler62140801]

Monitor color space is the frist thing i looked at

[nicoler62140801]

I agree, a proper viewing environment is essential, but it's not the matter here, i shouldn't have different results from the same software, on the same footage. You don't think it could be an issue of the new Mac Book Pro ? I already have one with sound crackling, due to the new T2 chip. I don't know anything about hardware, but i export files from editing softwares since 10 years and i never saw that.

[chrisw44157881]

the following is all theory and guesswork:

did you try flipping them; putting them into the other computer to get the screenshot and check with a pixel sampler? i only ask because apple has color profiles and I don't know on apple if a screenshot can be affected by monitor profiles.

Apparently Apple uses 3 kinds of P3 variants depending on the monitor screen size.  I pulled them from The Wide Gamut World of Color — iMac Edition

http://www.astramael.com/

so I might profile them into luts if this is the case so that you lay them as adjustment layers over sequence.

[nicoler62140801]

They look different as well on the other computer, but i didn't make a screenshot, i can if you need it. The resolution on both macs are the same, the monitor color space too.

[nicoler62140801]

I may have an idea. I will do exports tomorrow from other editing softwares to see if the issue persists. If so, it comes from the new computer and i will adress Apple about the issue. If not, it means there's a wrong dialogue between Premiere Pro and the new mac...

[nicoler62140801]

The issue doesn't occur with FCP...

[nicoler62140801]

And i was wrong about one thing. The red zones of the "2018 file" are visible within Premiere, it does'n occur during the transcode. Premiere delivers different grading with the same Lumetri settings on the two computers.

For you, Neil, the GPU cannot be involved ? I made a Time Machine transition from the old mac to the new one, i was thinking about that, maybe Premiere is not using the AMD card, i really don't know where to look...

[cvid01]

Just a thought: If your 2018 MacPro has a new Retina screen, I have read that for editing, photographers, etc., to turn off "True Tone" which tends to give a warm colour to images.

[excited_Genie16B8]

i shouldn't have different results from the same software, on the same footage.

I'm saying that until you have the proper viewing conditions, you can't even determine that much.

[nicoler62140801]

I disabled True Tone the day i got the computer..

[nicoler62140801]

And because you're still talking about viewing condition, i'll give you an other example. I did a grading on the mac book pro 2012, and uploaded it to vimeo. What i see on both computers in firefox is the same grading. Same colors at least. But when i open the Premiere project on the new mac book, there's red areas who almost pixellize. The difference is huge.

[nicoler62140801]

I took an other footage for test.

Mac Book Pro 2012

Mac Book Pro 2018

Even if the picture is blurry and not sharp, on the 2018 screenshot, around the lips and on the arm, there's pink (at least pink on my screen) artifacts.

[nicoler62140801]

To be fair there's artifacts in both but still...

[R Neil Haugen]

That's a difference in the screen settings.

[excited_Genie16B8]

Set up a proper viewing condition.  That's the first step.  Report back when done.

[nicoler62140801]

I found a solution. My project was made in Premiere 12.1.1. I downgraded Premiere on the new mac to that version, i recovered the right grading. Would love to know why. At least all my projects looks the same on both computers.

[nicoler62140801]

To be sure, i updated Premiere and got back to 12.1.1 again, edits looks different in each version of the software, on the same screen. The issue is Premiere related only.