The Statistics Plugin for Davinci Resolve* is delivering frame statistic values, respecting different delivery standards such as BT.709 SDR or BT.2020 HDR.
The luminance statistics can be based on the maximum Code Values of decoded R, G, B (similar to MaxCLL and MaxFALL) or using CIE Y (real luminance) values.

SDR values can be influenced by setting a power function (gamma) and defining a peak brightness level.

Explanation of Options

Calculate Mode

normalize (legal range): When this option is activated, the Statistics plugin for Davinci Resolve performs a normalization of legal range values. In other words, values of the legal range of video are expanded (0…1). This option is useful for situations where the Project settings require full range but you want to analyze what’s going on in the legal range of the signal.

If switching to legal range causes values above the maximum (e.g. above 100% or 10000 nits), then you either have a situation where you should not use the normalize button or you’re exceeding the legal range, which might lead to clipping your delivery format.

EOTF: The EOTF selector currently supports SDR (gamma value), HDR (PQ/ST.2084) and Picture Level (%).
For SDR, you have the choice of choosing a gamma value like 2.2 or 2.4 (default) and a peak brightness of your mastering display.

Statistics Mode: This selection allows you to calculate the luminance values based on individual R, G, B channels, the Maximum of them or the real Luminance values (requires correct selection of the Color Space). The Chroma selection is experimental beta right now.

The calculations are similar to CEA 861-3 while MaxFALL and MaxCLL correspond to Average Picture Level and Max Level in the plugin.

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*Note: This Plugin is made for Davinci Resolve 15 running on a Windows System with a CUDA-enabled (NVIDIA) GPU. We’ve also built an OpenCL-version (selectable in the installer) as well as versions for Adobe Premiere Pro and Adobe After Effects.