新兴H.26L视频编码器的优化

2001 IEEE Workshop on Signal Processing Systems. SiPS 2001. Design and Implementation (Cat. No.01TH8578) Pub Date : 2001-09-26 DOI:10.1109/SIPS.2001.957368

V. Lappalainen, A. Hallapuro, T. Hamalainen

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引用次数: 17

摘要

描述了新兴的ITU-T H.26L视频编码器的两种优化实现。第一个中等优化的版本是用C语言实现的，而第二个高度优化的版本则利用了MMX汇编指令。与相应优化的H.263/H的比较。在固定的空间和时间视频质量，可变的比特率和复杂度的情况下，给出了263+的实现。在733 Pentium III处理器上，QCIF(四分之一通用中间格式)序列的实时编码速度达到10 fps，比特率比H.263+降低了29%。H.26L的复杂度大约是H.263+的3.4倍。

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Optimization of emerging H.26L video encoder

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 MMX assembly instructions. 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 Pentium III processor, a real-time encoding speed of 10 fps for QCIF (quarter common intermediate format) 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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来源期刊

2001 IEEE Workshop on Signal Processing Systems. SiPS 2001. Design and Implementation (Cat. No.01TH8578)

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