: It uses more efficient coding tools than its predecessor, such as larger and more flexible Coding Tree Units (CTUs) rather than 16x16 macroblocks. Resources for Academic Papers
However, if you are looking for technical information regarding the technologies used in such a file—specifically (High Efficiency Video Coding)—you can find extensive documentation and academic papers on its development and standards. Technical Context of HEVC
Color depth reduction. * Download: Download high-res image (295KB) ScienceDirect.com HEVC files explained | How to open and use them - Adobe