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T
t.linn
Known Participant
May 18, 2024
質問

Inconsistent color between Program window and rendered files

  • May 18, 2024
  • 返信数 1.
  • 1638 ビュー

I'm having an issue where I get color looking exactly like I want it (using the scopes and confirming visually) on my calibrated monitor, but when I export the video it does not look the same. I can't figure out why. People who look normal in the Program window look like colorless corpses when the video is played in a browser or media playback software on the same monitor.

 

I have turned off color management in Premiere Pro so I don't think the problem is a color space mismatch. I'm not dealing with HDR footage. It's all decade-old XDCAM EX footage in Rec 709. I'm exporting to H.265 with the color space set to Rec. 709. This seems pretty straightforward. I can't figure out what I'm missing.

 

Thanks in advance for any help.

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T
t.linn作成者
Known Participant
May 18, 2024

The upper part of the screen capture is the program window. The lower part of the image is the exported file open in a media player. Media Info for the exported file is below.

 

T
t.linn作成者
Known Participant
May 18, 2024

Well, one more detail. I tried playback with both QuickTime and IINA media players. The color was wrong on both. I uploaded the file to my CDN and played it back in Firefox and Edge. Also wrong. But it looks perfect when played back in VLC. What am I missing?

R Neil Haugen
R Neil Haugen
Legend
May 18, 2024

The key bit of data you didn't mention was your OS ... and I'm guessing, it's a Mac?

 

As Apple for some odd reason chose to apply an incorrect display transform for Rec.709  video files. It uses gamma 1.96 rather than the published standard of 2.4, which is why the image is lighter/less contrasty. And from testing a colorist acquaintance published of test media, they don't exactly land converting Rec.709 color onto the monitor's native P3 color space either.

 

VLC ignores Apple's ColorSync and applies correct Rec.709 standards. Which is why the difference.

 

Bring the file back into Premiere, it will look as it did prior to export.

 

Wanna hear another fun one? Some Macs now have "reference modes" for the monitors. Someone with reference modes setting them to HDTV gets ... correct Rec.709 for both tonal (display gamma 2.4) and color (proper color space conversion).

 

As I run a fully calibrated and profiled system for my reference monitor, what I'll see is what you saw in Premiere.

 

And yea, it's a right mess, thanks Apple. I work for/with/teach pro colorists, most of whom are total Mac geeks. And they are furious with Apple over this mess.

 

Oh, you can set Premiere's Viewer Gamma to 1.96 Quiktime, and then you'll see inside and outside of Premiere the same image. However, you do tonal/color corrections for that image, those of use with regular Rec.709 systems will see a dark image with crushed blacks and a bit oversaturated to boot. Yea, funsies.

Everyone's mileage always varies ...
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