Apple Updates HLS Authoring Spec for 4K and HDRHLS just got really complicated. On September 9, 2017, Apple updated their HLS authoring requirements to include HDR and 4K recommendations. The updated ladder is shown below. Here are some of the new/updated requirements for HEVC and HDR. There are more in the spec, but these are the ones I wanted to comment on. 1.6. Profile, Level, and Tier for HEVC MUST be less than or equal to Main10 Profile,
