Extreme Rate Transcoding for Dynamic Video Rate Adaptation

J.I. Khan and D. Patel (USA)


: video, transcoding, adaptation.


This research investigates techniques for extreme scalable video rate transcoding. Traditional requantization based rate transcoding offers a reduction ratio close to 1:5. Unfortunately, the current bandwidth differential between Internet egress points easily exceeds more than 1:60. In this paper we present the analysis of a joint transcoder technique which combines requantization and re-tiling and dramatically extends the transcoding ratio. We demonstrate optimum operation point based on the joint error and entropy analysis of the system, and share some experiments based on live video transcoding performance.

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