Improved resizing MPEG-2 video transcoding method

Abstract

This paper proposes a transcoding technique to reduce the resolution of MPEG-2 video stream for small wireless communication terminals. The proposed method first extracts the motion vector, the macroblock mode information, and the DCT coefficient from the original image, and then determines the mode of the macroblock by analyzing the information, after which it re-calculates the new macroblock information and processes it by separating it into a treatment in the DCT domain and a treatment in the spatial domain. The proposed method reduced the computational complexity to be apt for real-time processing and the image degradation. © 2011 Springer-Verlag.