Conversion HDR to SDR

[DMD]

Good morning
I tried to convert an HDR file (3840x2160) to MP4 (720x404), the procedure ended regularly, but the color space of the obtained file remained that of the original file, that is, viewing the file obtained with a normal screen color space is busted, that is, desaturation and little contrast.
I tried then with Adobe Premiere, in fact the latter succeeds in the enterprise but with conversion times biblical than DVDFab.
Some idea?

Thank you

[signals]

Please see the notice near the top of this page, all UHD issues should be reported in the UHD forum. Before posting there, please update to x64 v10.0.9.3 Beta and try it again and include the DVDFab internal log that it generates in your new post, thanks.

[DMD]

OK. Thank you very much.