The purpose of this document is to define an ATS stream, the boundary points within it, both explicit and implicit, how boundary points map to various ABR formats such as HSS Fragments and HLS Segments (both in the video and audio domain), and the time stamps, durations and byte ranges of these chunks.
To that end, a significant portion of this document describes the basic requirements for adaptive video and audio conditioning. These sections detail conditioning considerations such as varying frame rates, advertising splice points and input loss handling.