Prores 4444 export from FCP has gamma shift

[Rafael Amador]

Hi John,
If your Prores444 comes from Color or AE, is 10b RGB.
FC can´t render in 10b RGB so not sure how manage the process.
Set your sequence to Prores HQ and¨”Render in high Precission” may works.
rafael

http://www.nagavideo.com

[Jeremy Garchow]

You should be checking this on an extenal monitor through proper hardware, but make sure that the FCP color compatibility box is checked in QT.

[John Palmer]

Where is the FCP color compatibility box in QT?

I am not doing a QT conversion, so not sure how that relates. I am simply exporting the sequence with “current video&audio settings.” When I do the same kind of export with ProRes 422 footage there is no shift. So I don’t feel this has anything to do with my monitor/hardware.

[John Palmer]

Thanks Rafael.

My footage comes from 5D, converted using 5DtoRGB. I’ve tried your method but it didn’t work. I get the same gamma shift as before. Did you have any other suggestions?

thanks!

j

[Jeremy Garchow]

[John Palmer] “Where is the FCP color compatibility box in QT?”

In the preferences of QT7.

ProRes 444 for 5D material is ultra overkill.

[John Palmer]

Actually not. Try converting a file into 4444 and 422, look side by side, and you will see a major difference. At least I can with my footage.

If you’d like, you can read further here: https://www.elskid.com/blog/5d-to-rgb-new-transcoding-app-tested-at-home

j

[Jeremy Garchow]

I’ve tried it. There’s a reason it’s free.

Your tests dont compare 444 vs 422, but rather streamclip vs 5dtoRGB.

[John Palmer]

Sorry James, read this one as well. https://www.elskid.com/blog/5d-to-rgb-the-follow-up-bigger-comparison-yes-yes-prores-422-sq

In any case, I made my own tests converting to both 4444 and 422, and I can see a clear difference on my calibrated Eizo 211 monitor.

You mention that 5DtoRGB is free. Is there a paid product that does a better job at converting? If so, could you let me know the name?

I had a discovery. When I export using “Quicktime conversion” from FCP, then there is no gamma shift. When I export using “Quicktime ” from FCP, there is a shift. Seems like a bug to me. Or there is a magical setting somewhere…

j

[Jeremy Garchow]

[John Palmer] “I had a discovery. When I export using “Quicktime conversion” from FCP, then there is no gamma shift. When I export using “Quicktime ” from FCP, there is a shift. Seems like a bug to me. Or there is a magical setting somewhere…”

There is no way to accurately judge this accept on a calibrated monitor through proper hardware out of FCP. My bet is that you don’t have a 444 capable monitor, is that right? how do you have the Eizo hooked up? Not through a Kona I imagine?

Do you have QT 7 installed?

[John Palmer]

You’re right, I’m not sure if my monitor is 444 capable. It’s 12 bit, but is meant for photography and not video. so not sure beyond that…
https://www.eizo.com/global/products/coloredge/cg211/index.html

no I don’t have a kona connection..

I have QT7 installed yes.