How to create 8K (7680×4320) video in HDR from 4K original phantom 4 pro tutorial.
Original 4K (3840×2160) video

After Effects – Export every frame in openEXR sequence
SNS HDR PRO – process every openEXR frame in sequence batch.. and save in TIFF sequence

Photoshop – import tiff hdr sequence.. camera raw filter adjustments and export in uncompressed mov

Video Enhancer : from 4K to 8K and save in uncompressed format
STAXRIP – Convert hdr uncompressed video in X264 8K
Another 8K video non hdr :