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2009•Signal ProcessingRequires access

Study on Video Codec Computation Efficiency Optimization Techniques of DSP Platform

Jun Chang

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Abstract

This paper presents the common design principles and several effective methods of porting and optimizing video codec on DSP platform by taking porting H.264 to PNX1500 processor as an example.The main idea is to improve the video codec calculation efficiency performance by combining such optimization strategies as algorithm,parallel instruction and storage system with the specific ar- chitecture of target processor.Experiment results show the ultimately optimized H.264 encoder can compress D1 resolution video samples at less than 18fps to achieve almost real-time rate.This technique has been incorporated in a practical video communication system at present.

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What this paper is about

This paper presents the common design principles and several effective methods of porting and optimizing video codec on DSP platform by taking porting H.264 to PNX1500 processor as an example.The main idea is to improve the video codec calculation efficiency performance by combining such optimization strategies as algorithm,parallel instruction and storage system with the specific ar- chitecture of target processor.Experiment results show the ultimately optimized H.264 encoder can compress D1 resolution video samples at less than 18fps to achieve almost real-time rate.This technique has been incorporated in a practical video communication system at present.

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Available abstract

This paper presents the common design principles and several effective methods of porting and optimizing video codec on DSP platform by taking porting H.264 to PNX1500 processor as an example.The main idea is to improve the video codec calculation efficiency performance by combining such optimization strategies as algorithm,parallel instruction and storage system with the specific ar- chitecture of target processor.Experiment results show the ultimately optimized H.264 encoder can compress D1 resolution video samples at less than 18fps to achieve almost real-time rate.This technique has been incorporated in a practical video communication system at present.

Key concepts: Codec, Porting, Computer science, Digital signal processing, Encoder, Computer hardware, Video processing, Adaptive Multi-Rate audio codec

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