How can I watch a movie using Dolby Atmos from my MacBook Pro to my Apple TV?

Getting confused with Dolby Atmos, please help!

I have a Denon AVR-x2800 and I can't get Dolby Atmos when watching a movie from a MacBook Pro via HDMI, nor streaming to my Apple Tv-4K.

It sounds fine, but it is not the correct system for the movie, the Denon offers Dolby Sorround playback, and various forms of DTS.

The only way to watch movies with Dolby Atmos correctly is to do it from the Apple TV, from my Macbook Pro I have tried with Infuse Player, which is the only one that claims to be able to handle Dolby Atmos and I have not been able to do it either.

Can anyone help me?

Has anyone gone through this and knows what it is or has the solution?

Thanks in advance!

Ed.

[Re-Titled by Moderator]