Achieving viewing time scalability in mobile video streaming using scalable video coding

摘要: We propose a general quality-power adaptation framework that controls the perceived video quality and length of viewing time on battery-powered receivers. The can be used for standalone devices (e.g., DVD players notebooks) as well mobile receivers obtaining signals from wireless networks TV streaming over WiMAX). Furthermore, supports both live streams shows) pre-encoded movies). present an algorithm each device to determine optimal substream received, decoded, rendered user at the: (i) highest given time, (ii) longest without exceeding battery level constraint. instantiate this work out its details broadcast networks. In particular, we new scheme enables efficiently adapt scalable achieve power saving proportional bit rates received streams. implement proposed in actual testbed conduct experiments using real phones. These show practicality possibility achieving scalability. For example, phone receiving decoding same program, range 4 11 hours achieved by adaptively controlling frame rate visual stream.