Support for wide gamut color output

Some of us are using FotoMagico to produce video for use in 4k HDR wide gamut color video. It would be nice to be able to produce prores video in a broader color space than rec709, which is what the current ProRes files are tagged as.

Now that Lightroom Classic for Mac offer HDR output, it would be marvellous to use HDR pictures in my Slideshow. My beamer is ready for it. Is it hard to adapt Fotomagico to cover this?