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SIGCOMM
1994
ACM

An Algorithm for Lossless Smoothing of MPEG Video

13 years 7 months ago
An Algorithm for Lossless Smoothing of MPEG Video
Interframe compression techniques, such as those used in MPEG video, give rise to a coded bit stream where picture sizes di er by a factor of 10 or more. As a result, bu ering is needed to reduce (smooth) rate uctuations of encoder output from one picture to the next; without smoothing, the performance of networks that carry such video tra c would be adversely a ected. Various techniques have been suggested for controlling the output rate of a VBR encoder to alleviate network congestion or prevent bu er over ow. Most of these techniques, however, are lossy, and should be used only as a last resort. In this paper, we design and specify an algorithm for lossless smoothing. The algorithm is characterized by three parameters: D (delay bound), K (number of pictures with known sizes), and H (lookahead interval for optimization). We present a theorem which guarantees that, if K 1, the algorithm nds a solution that satis es the delay bound. (Although the algorithm and theorem were motivated b...
Simon S. Lam, Simon Chow, David K. Y. Yau
Added 10 Aug 2010
Updated 10 Aug 2010
Type Conference
Year 1994
Where SIGCOMM
Authors Simon S. Lam, Simon Chow, David K. Y. Yau
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