Im an iphone8 user, and Hdr movies take under 2GB space on iphone8 when downloaded. Some guy said he got 8GB space for a hdr movie on ipad pro. So, I wanna know whether hdr are movies have their own 'resolution' for each device or there are only two types of hdr movies, 1080p and 720p when downloaded. So, does anyone knows how much space itunes hdr movies take on iphone x?