A Scheme for MPEG-2 to H.264 Transcoding

This paper provides a scheme for MFEG-2 to H.264 transcoding. This scheme is composed of two parts: intra prediction and inter prediction. For the intra prediction part, 8 times 8 block DCT-HT transform-domain converse is used, and then intra mode decision is done in HT domain to obtain the optimum mode, so that good intra prediction is acquired. For the inter prediction part, motion vector (MV) got from variable length decoding (VLD) in MPEG-2 stream is reused as prediction motion vector (PMV) of H.264, then motion prediction mode and search region are reset, so that better prediction result is acquired. Experimental results show that this scheme is feasible