The tag should be rec2020 not PQ though, its 2 different things. one is the color tag NCLC and the other is the MDCV.
Ah yes i didnt read the last line of the specs, so yea you need to run that with transkoder seems like you dont have another option… crazy amazon things!
I was only looking for the prores metadata which should be like this:
And I just tried it but I cant get flame to write the MDCV or CLLI metadata by itself.
MediaInfo:
Obviously fill in CLLI metadata based on your content