| Summary: | 碩士 === 國立中正大學 === 資訊工程所 === 93 === In mobile multimedia products, MPEG-4 video compression plays an important role due to its feature of low bit-rate and high quality. But, MPEG-4 video codec consumes more power because of its high computation complexity. Currently, more and more RISC cores are widely used in mobile multimedia applications because of their low power consumption and multimedia extensions. Design of fully standard-compliant MPEG-4 video codec with real time performance on a RISC processor for embedded applications entails optimizations to the maximum extent possible. This thesis describes about the process of porting MPEG-4 video codec on UniCore platform and it proposes the algorithm level optimization methods to improve the performance of MPEG-4 video codec. Further, this thesis proposes the platform-dependent optimization methods according to the feature of UniCore platform. Finally, adopting the above methods, the MPEG-4 video encoder can reach 30 fps in CIF resolution on UniCore 200MHz platform and decoder can decode CIF resolution video at 70 frames per second.
|
|---|
