[MrMagic]

BTW - I tested this by combining a base layer from one clip with an enhancement layer from another. It's then really noticable when the DV metadata is being processed. When using VLC which doesn't support DV, the combined clip plays back as normal HDR and looks correct.

Smart move At least now we know that the metadata is actually being sent to the decoder.

I do have the Spears & Munsil UHD test disc, but unfortunately Kodi only plays the DV demos as HDR. Would it be possible to incorporate DV support for the blu-ray disc format (or rather .m2ts files) as well?

Never mind, that disc was not ripped properly and doesn't contain the DV information.