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Proceedings Paper

Real-time MPEG-1 software decoding on HP workstations
Author(s): Vasudev Bhaskaran; Konstantinos Konstantinides; Ruby B. Lee
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Paper Abstract

A MPEG1 codec that is capable of real-time playback of video and audio on HP's RISC-based workstations has been developed. Real-time playback is achieved by examining the complete MPEG1 decoding pipeline and optimizing the algorithms used for the various stages of the video and audio decompression process. For video decompression, efficient implementations are derived by examining the huffman decoder, inverse quantizer and inverse DCT as a single system. For audio decompression, by viewing the subband synthesis function in MPEG1 layer I and layer II decoding as a DCT, a fast 32-point DCT suitable for use in MPEG1 audio decompression has been developed. Besides algorithmic enhancements, in order to achieve real-time performance, minor changes to the CPU architecture and the display pipeline architecture were needed. The integration of algorithmic and architectural enhancements results in real-time playback of MPEG1 video and audio on HP's RISC based workstations.

Paper Details

Date Published: 17 April 1995
PDF: 8 pages
Proc. SPIE 2419, Digital Video Compression: Algorithms and Technologies 1995, (17 April 1995); doi: 10.1117/12.206385
Show Author Affiliations
Vasudev Bhaskaran, Hewlett-Packard Labs. (United States)
Konstantinos Konstantinides, Hewlett-Packard Labs. (United States)
Ruby B. Lee, Hewlett-Packard Co. (United States)


Published in SPIE Proceedings Vol. 2419:
Digital Video Compression: Algorithms and Technologies 1995
Arturo A. Rodriguez; Robert J. Safranek; Edward J. Delp, Editor(s)

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