Real-time MPEG-1 software decoding on HP workstations

V. Bhaskaran, Konstantinos Konstantinides, Ruby Lee

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)466-473
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Apr 17 1995
EventDigital Video Compression: Algorithms and Technologies 1995 - San Jose, United States
Duration: Feb 5 1995Feb 10 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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