Quicktime Gamma Shift Davinci to Vimeo

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Blaine Russom

Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 1:10 am

Okay, I've tried multiple fixes for this but I just don't know what the answer is. I have project I'm trying to deliver to Vimeo and this Quicktime gamma shift issue keeps rearing it's head. How do you guys export for Vimeo to get the same look in Vimeo as I see in Resolve? My monitor is calibrated btw for rec 709... when I delivered to Bluray everything looks fantastic.. just this online delivery is not representing the true colors.
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 1:19 am

mac or pc?

do you color with an external monitor?
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Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 2:00 am

Hi Walter,
I'm using Mac, no I dont use an external monitor but I have checked the Bluray output and it looks exactly as it did on DaVinci.
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 2:37 am

can you get the standard SMPTE bars and the bw ramp and do a 2 sec quicktime and post a link plus the drp of the project so i can see the settings?
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Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 3:04 am

Sent it via PM
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 4:24 pm

you are coloring your project with [full range] setting and that should be OK in order to look at your monitor (I will recommend an external monitor for color grading.), but I assume that your "gamma shift" is in your eye "dark and contrast" the result when you do a apple prores.

try to export the prores changing the setting to [video range] both in the setting page and in the export page as for the image, export and check again.



setting.jpg
setting.jpg (120.95 KiB) Viewed 8044 times
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Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 6:54 pm

Hey Walter, thanks so much, yes that did help! I'll be sure to make note of that for my other projects that I'm working on.

Still however, it doesn't look exactly as how I graded because all the colors have shifted. I kept looking and also found something else also that was also causing an issue. I had the "Use Mac Color Profile" option checked. When I turned that off it made a huge difference in my footage. So I fiddled with the Davinci YRGB Color Managed settings to control what I was seeing.

I set my input to "bypass", timeline to "Rec 709 2.4" (since that's how I'm calibrated) and the output to Rec 709. Everything looks fantastic on output and just as I intended.. however, the clips that were shot in RAW are all messed up. Do you have any suggestion to fix them? They look like 2-4 color images not millions+

All my footage is shot on the BMCC and the BMPCC in ProRes Log and RAW... any idea?

Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 7:02 pm

Just a little more information. The Raw Clips were adjusted using the Xrite ColorChecker, however even when I clear those adjustments it still doesn't look right, blown highlights, etc..
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 7:10 pm

if you use the resolve color management, i think you must select in your media page the clips thar are bmcc and select the proper color profile.

do you "have" to use RMC or is an esthetic choice?
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Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 7:32 pm

No I dont have to, just I want to avoid having to color grading (the RAW clips) all over.

I'm realizing that the "Use Mac Display Profile" settings really was a bad idea. When I started this project a while back I thought it would match DR to my monitor calibration but it seems like it had some other specifications.

So the use of YRGB Color managed is so that I can output a file emulating what I had been color grading with all along. Seems to be effecting all my RAW clips negatively, even with the selection of the input color space on the timeline as per your suggestion. I'll just regrade them since looks like there is no way around it..

Thanks so much for your help!
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 7:43 pm

because you use bmcc, if you setup yRGB, you can simply set ask the raw files as log film and use the standard lut that came with resolve
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David Williams

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 10:43 pm

I found, for whatever reason, the recent Vimeo player software interprets everything as Data Levels.

Old stuff I had uploaded years ago, which looked correct at the time, with Video Levels became washed out with black levels well high.

I exported the same projects as Data Levels and replaced them on Vimeo, and they looked as expected, with blacks actually black again.
http://www.davidwilliams.com.au
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 10:44 pm

David Williams wrote:I found, for whatever reason, the recent Vimeo player software interprets everything as Data Levels.

Old stuff I had uploaded years ago, which looked correct at the time, with Video Levels became washed out with black levels well high.

I exported the same projects as Data Levels and replaced them on Vimeo, and they looked as expected, with blacks actually black again.


Is it a 444 or a 422?

because it matters.
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David Williams

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 11:08 pm

waltervolpatto wrote:
David Williams wrote:I found, for whatever reason, the recent Vimeo player software interprets everything as Data Levels.

Old stuff I had uploaded years ago, which looked correct at the time, with Video Levels became washed out with black levels well high.

I exported the same projects as Data Levels and replaced them on Vimeo, and they looked as expected, with blacks actually black again.


Is it a 444 or a 422?

because it matters.


With Vimeo I upload 420 H264 QT. My point is, it's not what Resolve decides levels should be based on 444 or 422, etc, what the Vimeo player decides has changed.

I uploaded a 420 H264 QT 5 years ago with Video Levels. It looked correct.

5 years later, with no change from myself, on Vimeo it looked washed out.

I replaced the original with a 420 H264 QT with Data Levels. It looks correct again.

Both times, the same project, same original footage, etc, one change. Video to Data levels. So even older stuff Vimeo had re-encoded themselves for playback is being interpreted wrongly it seems. I tested the same thing with Youtube, it remains happy with Video Level files.
http://www.davidwilliams.com.au

Blaine Russom

Re: Quicktime Gamma Shift Davinci to Vimeo

PostSun Mar 27, 2016 11:39 pm

waltervolpatto wrote:
Is it a 444 or a 422?

because it matters.



What is the difference between the two formats?
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waltervolpatto

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Re: Quicktime Gamma Shift Davinci to Vimeo

PostMon Mar 28, 2016 12:16 am

in 422 the active data is video level by definition, in 444 it can be both and the interpretation can be confusing
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Re: Quicktime Gamma Shift Davinci to Vimeo

PostTue Jul 25, 2017 11:13 am

Happening to me when posting to Youtube....
I grade lots of stuff for youtube, a few good years ago I saw that I get better compression results (detail and grain) when exporting a Prores444 or any thing of the sort and using Media encoder to make a H264, recently I had a clip with very dark and single colord backgrounds that led to very strong banding (that is after I did every trick in the book to prevent it from happening - looks OK on vimeo BTW)
Any way it led me to do some new research.
My projects are usually set up for rec 709 with a gamma of 2.2 at video levels on external monitor and external scopes.
H264 exported straight from Resolve contain much more detail then the ones converted in Encoder (that look like soup).
The thing is that there is a video-data shift after uploading to youtube, It seems as if youtube is assuming to get Data leveld footage and because of that the upload looks washed out.
I did a test and rendered an UHD H264 at about 80Mbps at Data levels (I know its a mistake for 420 stuff) in quick time or back in Resolve the blacks and whits are crushed as expected, but the upload to youtube looks much closer to the file...a bit dark but much better
Did you come across any thing of this sort?
Attachments
H264 original - that looks correct.jpg
H264 original - that looks correct.jpg (310.27 KiB) Viewed 6696 times
H264 upload with Data levels set.jpg
H264 upload with Data levels set.jpg (344.76 KiB) Viewed 6696 times
H264 upload with Video levels set.jpg
H264 upload with Video levels set.jpg (309.49 KiB) Viewed 6696 times

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