Use Case 1: Accurate play position

# # Use Case Description

• • • • • For media synchronization, interactive video and ad insertion use cases an accurately reported current play position (as the presentation time of the currently presented frame) is required.
• • • • • We’ve seen offsets of up to 800ms, testing with different Smart TVs, HbbTV etc.. For testing, the actual play position was “burned” into the video.
• • • • • The issue might not originate from an inaccurate media engine, but maybe slow event pipeline or low JavaScript resolution timer => performance
• • • • • Device manufactures probably have more insight into this.

# # Overlap with other use cases

# # Potential Implementation of Use Case using HTML-5 APIs

# # Required features

# # Identified Problems and Gaps

# # Potential Requirements and Specifications