Interactive Media Systems, TU Vienna

Evaluation of data-parallel splitting approaches for H.264 decoding

By Florian Seitner, Michael Bleyer, Ralf Michael Schreier, and Margrit Gelautz


The high computational demands of the H.264 decoding process pose serious challenges on current processor architectures. A natural way to tackle this problem is the use of multi-core systems. The contribution of this paper lies in a systematic overview and performance evaluation of parallel video decoding approaches. Our study investigates six methods for accomplishing data-parallel splitting in strongly resource-restricted environments inherent to mobile devices. These methods are compared against each other in terms of run-time complexity, core usage, inter-communication and bus transfers. We present benchmark results using different numbers of processor cores. Our results shall aid in finding a splitting strategy that is best suited for the targeted hardware-architecture.


F. Seitner, M. Bleyer, R. Schreier, M. Gelautz: "Evaluation of data-parallel splitting approaches for H.264 decoding"; Talk: 6th International Conference on Advances in Mobile Computing and Multimedia, Linz; 11-24-2008 - 11-26-2008; in: "Proc. of the 6th Int. Conf. on Advances in Mobile Computing and Multimedia", (2008), ISBN: 978-1-60558-269-6; 40 - 49.


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