When producing an HDR project I am going through all the proper steps to create an HDR (HLG) video. I also tried to export to HDR (PQ) ... no joy, the copy that should be white exports as 25% grey. Argh. I tried basic text and more elaborate Title sequences they all come up grey.
In the Layers list of the template project in Motion, select the Project object.
In the Properties Inspector, select the Override FCP Color Space checkbox.
This may be the easiest solution.
Can someone with Apple Motion please verify?
It does not work: in HLG peak brightness goes up to 50% and in PQ it hits 100 nits.
But it can still be solved in Motion: you can add the HDR tools, set PQ to HLG with 100 nits peak brightness and you can even publish the mix parameter so you can adjust the amount of brightness in FCP.