Paper Info
Title
An MPEG performance model and its application to adaptive forward error correction
Abstract
We present a general analytical model for predicting the reconstructed frame rate of an MPEG stream. Our model captures the temporal relationships between I-, P, and B-frames but is independent of the channel and media characteristics. We derive an adaptive FEC scheme from the general model and verify it by comparing it to the results of a simulation. The prediction error of the model compared to the simulation for a wide array of parameter values is less than 5%. We then use the derived adaptive FEC scheme to study the optimal rate allocation (i.e., between generating a higher frame rate or increasing the protection for a lower frame rate) when equation-based TCP rate control is used to couple packet rates to channel characteristics such as round trip time and packet loss probabilities. Surprisingly, we find that optimal protection levels for I- and P-frames are relatively static as loss rates increase from 1% to 4% while changes in the frame type pattern are used to ameliorate the effects of the increased loss. The study demonstrates how our model can be used to reveal joint source/channel coding tradeoffs and how they relate to encoding and transmission parameters.
Year
DOI
Venue
2002
10.1145/641007.641009
ACM Multimedia 2001
Keywords
DocType
ISBN
lower frame rate,general model,forward error correction,frame type pattern,optimal rate allocation,equation-based tcp rate control,higher frame rate,general analytical model,mpeg performance model,reconstructed frame rate,couple packet rate,adaptive fec scheme,round trip time,packet loss,prediction error
Conference
1-58113-620-X
Citations 
PageRank 
References 
16
1.09
11
Authors
3
Name
Order
Citations
PageRank
Ketan Mayer-Patel125725.85
Long Le21015.89
Georg Carle3951133.84