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MAJOR Gamma Shift Between Premiere and Encoder Export

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Jason Jammer
MAJOR Gamma Shift Between Premiere and Encoder Export
on Jan 30, 2017 at 3:47:43 pm

Hello,

This is an issue I've been battling for years and just when I thought I was managing the issue... this happens.

Here is a side by side export of the same frame.

Left frame is from Encoder using the High Bit Rate Setting.

Right frame is from Premiere using the High Bit Rate Setting.

The final output should be what Premiere is exporting. A darker green.

I constructed this using video from a cannon 5D, adding b/w filter on the video and putting a green matte on top at 70% opacity.

I'm using Premiere Pro CC 2017 and Windows 7.

Thanks. Any insight on this will be greatly appreciated.



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Jon Doughtie
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Jan 31, 2017 at 8:43:04 pm

Do you see the same problem viewing with something other than Quicktime Player? QT Player has some known issues.

System:
Dell Precision T7600 (x2)
Win 7 64-bit
32GB RAM
Adobe CC 2015.02 (as of 6/2016)
256GB SSD system drive
4 internal media drives RAID 5
Typically cutting short form from HD MP4 and P2 MXF.


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 1, 2017 at 3:42:26 pm

Hi Jon,

Thank you for responding. I also used VLC and the same gamma shift occurs.

My only solution at this point is to adjust the opacity until the render is how my screen displays.

For example, I am also using a red matte that looks great on the screen at 50% but renders looking like 25%, completely washed out. So I adjusted the opacity to 75% and after rendering I'm close to what 50% looks like which is acceptable.

Any other advice will be greatly appreciated.


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Tero Ahlfors
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 2, 2017 at 6:40:47 am

[Jason Jammer] "Any other advice will be greatly appreciated."

Are you using GPU acceleration? What if you turn that off and export?


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 2, 2017 at 2:47:57 pm

I do have that turned off.


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 2, 2017 at 5:29:34 pm

Interesting thing I just found. So exploring all the CUDA settings which I thought were all turned off.

I went into the sequence settings and found "Composite in Linear Color (requires GPU acceleration or max render quality) was checked by default.

I unchecked this and did a test render and the outcome had very little gamma shift compared to what the image looks like in Premiere.

Check out the results.





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Dan Powers
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 2, 2017 at 10:07:07 pm

That is still a pretty significant difference.... I am on OSX and what I render looks identical. I think if I were you, I would do a chat session with Adobe support and let them do some remote testing. What you are getting is not acceptable.


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 3, 2017 at 2:49:03 pm

Hi Dan,

The difference is totally unacceptable but the render on the right is only slightly off from Premiere. The render on the left is completely off and all the difference is that check box i mention above.

Jason


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Peter Garaway
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 6, 2017 at 11:18:55 pm

Hi Jason,

Can you share some more details on your system and project?

- System specs (OS, GPU, etc..)
- Media type
- Effects used (if any)
- Export settings

Thanks!

Peter

Peter Garaway
Adobe
Premiere Pro


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 7, 2017 at 2:21:32 pm

Hi Peter,

Here are the details. Thanks for responding. I'm free to talk privately if possible.

- System specs (OS, GPU, etc..)
Dell Precision T7910, WIndows 7 64bit, NVidia Quadro K4200, CC 2017. All software and drivers up to date.

- Media type
8bit PNG, 8bit MP4 DSLR

- Effects used (if any)
b/w filter applied to the MP4 and Overlay color blend applied to the PNG at 70% opacity

- Export settings
Default High Bit Rate from both Premiere and Encoder


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Peter Garaway
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 15, 2017 at 11:13:49 pm

Hi Jason,

Sorry for the delay. I was out of town all last week. Can you reach out to me thorough my email pgaraway @ adobe dot com

Thanks!

Peter Garaway
Adobe
Premiere Pro


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Jacob Sørensen
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 21, 2017 at 10:30:47 am

Could you please give an update on the issue here at some point? ☺


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Duke Sweden
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 21, 2017 at 1:59:13 pm

Through months of intense research I've discovered that AME does not like h264. When I encode using WMV I get exact reproductions of my video as they appear in Premiere Pro. I realize this is not an option for you pros (although I see no difference in quality, it takes FOREVER to render to wmv), perhaps this can give the engineers at Adobe a starting point in troubleshooting the problem.


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Jason Jammer
Re: MAJOR Gamma Shift Between Premiere and Encoder Export
on Feb 22, 2017 at 2:24:14 pm

Hello Everyone,

I’ve been in contact with Adobe and they have shown interest in looking into the issue. I created a sample file along with sending them my Encoder Preset. Hopefully they will be able to duplicate the shift on their end which in turn may warrant a conference call.

The people at Adobe are very busy and I value any time they put towards solving this issue. If it comes to a call with them I will let everyone know the results.

In the meantime, comprise has been my only solution to this issue. I do a lot of render testing and make adjustments as needed. If you scroll up and see my post from Feb 2 that shows the side by side render along with the Sequence Settings panel. I found very significant differences with “Composite In Linear Color” UNCHECKED as opposed to CHECKED.


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