Parallelism in the decoding of MPEG digital video

Karl Wittig

doi:10.1117/12.375236

29 December 1999 Parallelism in the decoding of MPEG digital video

Karl Wittig

Proceedings Volume 3970, Media Processors 2000; (1999) https://doi.org/10.1117/12.375236
Event: Electronic Imaging, 2000, San Jose, CA, United States

Abstract

The rate at which MPEG digital video is decoded depends primarily on the resolutions and the pixel rates of the images that are ultimately displayed. A variety of MPEG decoders is currently available for standard-definition video. Higher-resolution video, such as HDTV, requires much higher decoding rates. The processing speeds needed for these high rates may not be attainable in a decoder that uses conventional digital processing and memory technologies without the use of parallel processing. This will continue to be true even after high-speed decoders become available for HDTV resolutions, as there will be other video applications (e.g., virtual reality, scientific, and medical imaging) for which still higher resolutions are needed. Consequently, higher processing speeds will be required, along with parallel processing. The MPEG decoding algorithm, however, was designed to process an entire picture sequentially, and as such is not well-suited for parallel processing implementations. In this paper, the general problem of parallelism in the decoding of MPEG video is considered, and a simple, efficient method of partitioning it into parallel processes is described.

Citation Download Citation

Karl Wittig "Parallelism in the decoding of MPEG digital video", Proc. SPIE 3970, Media Processors 2000, (29 December 1999); https://doi.org/10.1117/12.375236

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