Hyperlinks are a core functionality of the Web. To fully include time-continuous content such as audio/video into the Web, we need to be able to point hyperlinks into such content to address temporal offsets.
NOTE: this I-D needs updating with IETF

Time intervals in URI queries and fragments
draft-pfeiffer-temporal-fragments-03.txt (local)

Abstract

This document specifies a syntax for addressing time intervals within time-based Web resources through URI queries and fragments. It suggests a Best Current Practice (BCP) for any time-based Web resource for which temporal subparts may be requested and retrieved. This enables, e.g., direct access to a clip of a video stored on a Web Server, or direct jumps to a specific event within a piece of music. The syntax is not restricted to audio or video Web resources, but covers all kinds of Web resources that contain time-continuous information.