Project Settings – Color Management – Color Space & Transforms When delivering to YouTube and Vimeo, setting Rec709-A as the timeline color space and output color space does not have a gamma shift. But the SRGB tag is not recognized by Youtube and Vimeo. If you have enabled “Use Mac Display color profiles for viewers” on a Mac, using sRGB as the timeline color space will not have a gamma shift between QuickTime player and Resolve. Use Mac Display color profiles for viewers gamma shift fix Using Rec.709 -A as the timeline and output color space The exported Quicktime with the Rec.709-A tag has the same tag as the Final Cut X QuickTime and does not have a gamma shift in Quicktime player or YouTube. The Quicktime with the Rec 709, 2.4 gamma tag that was darker than the original, The original QuickTime from Final Cut X had these tags: Gamma Tag – Rec.709-A Checking the gamma tags in Quicktime Player (Mac) When exporting in the deliver pane, you change the tag in: Output Color space – Same as Timeline (default) Project Settings – Color Space & Transforms – Color Space & Transforms In Output color space -Rec.709 – Rec709-A Method 2 – Changing Advanced Setting when exporting In Timeline color space – Rec.709 – Gamma 2.4 In Project Settings – Color Management – Color Space & Transforms Method 1 – Changing Project Settings (Resolve >17.5) 709-A gamma tag as the output color space when exporting from Resolve. One example is when you drop a DCP in the timeline, and the DCP is converted to the timeline color space. Sometimes it is important to have the Timeline Color space as REC.709 Gamma 2.4. The video file will look the same as the original in Resolve and VLC, but QuickTime Player recognizes the 2.4 gamma tag as “unspecified,” and the video will look darker. When you export a video file from a Rec.709 2.4 gamma project in DaVinci Resolve 17/18 on Windows and Macs, the film may look darker than the original in QuickTime player on Macs and Vimeo/YouTube. Use Mac Display color profiles for viewers gamma shift.In this post, I describe how to fix two types of gamma shifts in Resolve 17/18:

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