Video transcoding for universal multimedia access

Authors:
Niklas Björk;Charilaos Christopoulos
Affiliations:
Ericsson Radio Systems AB, MediaLab, KI/ERA/T/KM, 164 80 Stockholm, Sweden;Ericsson Radio Systems AB, MediaLab, KI/ERA/T/KM, 164 80 Stockholm, Sweden
Venue:
MULTIMEDIA '00 Proceedings of the 2000 ACM workshops on Multimedia
Year:
2000

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Abstract

This paper discusses the issue of adapting video streams to different type of terminals with different terminal capabilities such as screen size, amount of available memory, processing power and type of network access. This functionality will be very useful for the Universal Multimedia Access application related to MPEG-7 standardization activities. Two different models for transcoding are examined, rate reduction and resolution reduction. Results will show that the computational complexity of the basic transcoding model can be reduced for each model by, on average, 39% and 23% without significant loss in quality. Comparisons with the scaleable coding model are also shown.