Efficient DCT Domain Transcoding from MPEG-2 to H.264 for Intra Mode Video
Geng Wei, Guang Hui Yang, Yudong Zhang · Applied Mechanics and Materials · 2013
The transcoding technology is widely used to settle the non-compatibility of devices and network interface. In this paper, the technologies in DCT domain is integrated to speed up the transcoding process. The proposed method firstly determined the intra mode set by discarding some seldom used modes and then the intra mode decision is performed by using DCT domain cost function. Experimental results show that this method can reduce the computational complexity greatly with acceptable video quality loss.