Workload characterization and cost-quality tradeoffs in MPEG-4 decoding on resource-constrained devices

Yanhong Liu, Samarjit Chakraborty, Wei Tsang Ooi, Ashish Gupta, Subramanian Mohan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Recently there has been a lot of interest in the embedded systems community on architectures and design methods that are targeted towards multimedia applications. This trend is primarily motivated by the proliferation of resource and power-constrained portable devices (such as mobile phones and PDAs), a major portion of whose workload is made up of multimedia applications. In this paper, we investigate the tradeoffs between video quality and the processor cycle requirements in such resource-constrained devices, in the particular context of MPEG-4 decoding using an open source codec called XviD. The XviD codec implements a number of powerful coding tools from MPEG-4, which are organized as profiles and levels. Given the specification of an architecture on which an XviD decoder is implemented, the work presented here would guide a multimedia applications developer in selecting appropriate profiles and levels for the corresponding encoder application. While the selection of such profiles has so far been primarily influenced by the network bandwidth in the case of video streaming, our work stresses the importance of additionally taking into account the architecture of the device running the decoder application. Although the relevance of this observation is increasingly being realized, sufficient work has not yet been done to provide guidelines on how to systematically make such selections. This work attempts to address this shortcoming.

Original languageEnglish
Title of host publicationProceedings of the 2005 3rd Workshop on Embedded Systems for Real-Time Multimedia
Pages129-134
Number of pages6
DOIs
StatePublished - 2005
Externally publishedYes
Event2005 3rd Workshop on Embedded Systems for Real-Time Multimedia - New York, NY, United States
Duration: 22 Sep 200523 Sep 2005

Publication series

NameProceedings of the 2005 3rd Workshop on Embedded Systems for Real-Time Multimedia
Volume2005

Conference

Conference2005 3rd Workshop on Embedded Systems for Real-Time Multimedia
Country/TerritoryUnited States
CityNew York, NY
Period22/09/0523/09/05

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