profile_of matched BT.2020 primaries before looking at the transfer, so
HDR10 and HLG footage got the Rec. 2020 profile and a managed project
decoded it with the 2.4 gamma. A PQ render of a solid that is 191,64,128
re-imported as 130,73,101, and HLG as 156,36,97.
Map BT.2020 + PQ to Rec. 2100 PQ and BT.2020 + HLG to Rec. 2100 HLG, the
profiles Interpret Footage already offers. A PQ and an HLG ProRes render
now read back into an sRGB project as the solid they came from.