An efficient framework for configurable video encoder

To meet the requirement of encoding different modals (colors, resolutions and bandwidths) video in size and powerrestricted scenario, an efficient embedded multi-modal MPEG-4 video encoder (EMVC) is proposed and implemented to meet requirement of some special circumstances in this paper. Based on integrated FPGA and DSP framework, EMVC can utilize respective advantages of DSP and FPGA in digital signal processing (e.g., parallelism and speed). The framework is designed with strong processing ability, flexible configuration and extensive coverage. In software design, we firstly improve some key algorithms in MPEG-4 standard that have great impact on coding efficiency; secondly, according to the hardware resource characters of DSP, the software is optimized at system and code levels. Experimental results indicate that it runs not only efficient but also flexible. Furthermore, by realizing diverse video processing algorithms, EMVC can also satisfy the requirement of some other embedded video applications.