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Estimating Decoding Times Of MPEG-2 Video Streams
Citation key BA00
Author Lars-Olof Burchard and Peter Altenbernd
Title of Book IEEE Intl. Conference on Image Processing 2000, Vancouver, Canada.
Year 2000
Abstract This paper is motivated through the advantages offered by employing real-time (priority-driven) scheduling (RTS) for efficiently implementing quality-of-service guarantees. For employing RTS (e.g. for conferencing), a-priori knowledge about worst-case execution times (WCET) of the decoding process is required. With our new approach (focussing of MPEG 2 with variable bitrates) the resource usage compared to fixed-bandwidth allocation can be significantly decreased. Solutions for the WCET analysis are presented for two scenarios (Video-on-Demand (VoD), live-video). A significant reduction of overestimations during WCET analysis of the live scenario can be achieved by using our new technique. In a the VoD scenario it is even possible to predict the exact execution times.
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