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Performance of H.26L Video Encoder on General-Purpose Processor

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Abstract

Two optimized implementations of the emerging ITU-T H.26L video encoder are described. The first, medium-optimized version, is implemented in C and the latter, highly optimized version, utilizes both algorithmic and platform-specific optimizations. Comparisons to a correspondingly optimized H.263/H.263+ implementation are given with the spatial and temporal video quality fixed and the bit rate and complexity varied. On a 733 MHz general-purpose processor, an average encoding speed of 17 frames per second for QCIF sequences is achieved with a 29% reduction in bit rate compared to H.263+. The complexity of H.26L is about 3.4 times more than that of H.263+.

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Authors and Affiliations

  1. Nokia Research Center, P.O. Box 100, FIN-33721, Tampere, Finland

    Ville Lappalainen & Antti Hallapuro

  2. Institute of Digital and Computer Systems, Tampere University of Technology, Finland

    Timo D. Hämäläinen

Authors
  1. Ville Lappalainen
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  2. Antti Hallapuro
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  3. Timo D. Hämäläinen
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Lappalainen, V., Hallapuro, A. & Hämäläinen, T.D. Performance of H.26L Video Encoder on General-Purpose Processor. The Journal of VLSI Signal Processing-Systems for Signal, Image, and Video Technology 34, 239–249 (2003). https://doi.org/10.1023/A:1023248302658

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  • DOI: https://doi.org/10.1023/A:1023248302658

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