RTP Circuit Breaker: Media usability circuit breakers for RTP-based interactive networked multimedia
30 September 2015
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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.