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Constraints on variable bit-rate video for ATM networks

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2 Author(s)
A. R. Reibman ; AT&T Bell Lab., Holmdel, NJ, USA ; B. G. Haskell

Constraints on the encoded bit rate of a video signal that are imposed by a channel and encoder and decoder buffers are considered. Conditions that ensure that the video encoder and decoder buffers do not overflow or underflow when the channel can transmit a variable bit rate are presented. Using these conditions and a commonly proposed network-user contract, the effect of a (BISDN) network policing function on the allowable variability in the encoded video bit rate is examined. It is shown how these ideas might be implemented in a system that controls both the encoded and transmitted bit rates. The performance of video that has been encoded using the derived constraints for the leaky bucket channel is presented

Published in:

IEEE Transactions on Circuits and Systems for Video Technology  (Volume:2 ,  Issue: 4 )