H264/AVC (Advanced Video Codec) is a new video coding standard developed by a joint effort of the ITU-TVCEG and ISO/IEC MPEG. This standard provides higher coding efficiency relative to former standards at the expense...
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ISBN:
(纸本)9789077381380
H264/AVC (Advanced Video Codec) is a new video coding standard developed by a joint effort of the ITU-TVCEG and ISO/IEC MPEG. This standard provides higher coding efficiency relative to former standards at the expense of higher computational requirements. This paper presents first a high-level complexity analysis of a H264 video encoder allowing for complexity reduction at the high system level. The coding performance is reported in terms of PSNR and bit rate. The complexity of the obtained cost-efficient configuration outlines the potential of using multi processor platforms for the execution of a parallel model of the encoder. For this, a YAPI-level parallel Kahn process network (KPN) model is proposed and implemented using the YAPI library Programming Interface. Finally, the system-level software cast tool is used for a concurrency analysis of the implemented YAPI model to identify the potential concurrency bottlenecks to be resolved using "Task-splitting", "Data-parallelism", and "Task-merging" forms of parallelism.
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