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Rate-distortion optimized video streaming using conditional packet delay distributions

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2 Author(s)
M. Kalman ; Inf. Syst. Lab., Stanford Univ., CA, USA ; B. Girod

We introduce a formulation for the rate-distortion optimized transmission scheduling of packetized video that incorporates a new, more accurate model for Internet packet delay and loss. The model assumes that delays at successive transmission times form a 1st order Markov random process. The model uses feedback to learn about delays in the recent past, and finds delay distributions for later transmissions by chaining together approximated conditional delay distributions. In prior work, this model has proved to be more accurate than the iid Γ delay model commonly used for rate-distortion optimized streaming. In this work, we show how to use the new delay and loss model to perform rate-distortion optimized packet transmission scheduling. Our results show a more than 1 dB gain in scheduling performance for our new delay model over the iid Γ model, for streaming simulations conducted with measured Internet delay and loss traces.

Published in:

Multimedia Signal Processing, 2004 IEEE 6th Workshop on

Date of Conference:

29 Sept.-1 Oct. 2004