'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
MPEG video decoding algorithm has been
embedded into many consumer electronic products. In this paper,
we demonstrate that the completion ratio (CR) does not represent
well the quality of presentation (QoP) of MPEG video. We then
propose a new QoP metric, which 1) is based on frame
completion ratio but 2) differentiates firm and soft deadlines and
also 3) considers the frame dependency. We show that, on a set of
simulated MPEG movies, the proposed QoP metric measures the
QoP of the movies much better than the completion ratio. We then
present a set of online scheduling algorithms that enhance QoP
significantly, particularly for overloaded systems
