It’s also the only way I can play HDR on macOS that looks decent (besides the native players like QuickLook/Quicktime/Photos).
I went into a rabbit hole recently playing iPhone-recorded Dolby hdr videos and tweaking all the various mpv settings but nothing really looked the same as in Photos. Iina is closer but also not exactly the same as the native players.
iPhone-recorded Dolby Vision videos uses an additional metadata called "Ambient Viewing Environment", and I don't think any third-party player supports it at the moment.
I went into a rabbit hole recently playing iPhone-recorded Dolby hdr videos and tweaking all the various mpv settings but nothing really looked the same as in Photos. Iina is closer but also not exactly the same as the native players.