Media usability circuit breakers for RTP-based interactive networked multimedia
Our paper on Media usability circuit breakers for RTP-based interactive networked multimedia was presented at the 21st International Packet Video workshop in Cairns, Australia, on 2 June 2015.
The RTP circuit breaker is primarily designed to protect the network from persistent congestion, and says relatively little about media quality. This paper presents an initial study of the perceived media quality of flows subject to congestion, to determine whether the RTP circuit breaker terminates flows that are visually acceptable or not. Results show that by the time the RTP circuit breaker triggers, media quality is generally completely unusable, and that many applications would benefit from ceasing transmission due to poor media quality long before they stop due to the congestion circuit breaker. This led to a media usability circuit breaker being added in the -05 version of the circuit breaker draft.