Method of Video Transcoding from MPEG-2 to HEVC with Picture Structure Information

A method is presented for transcoding from MPEG-2 to HEVC by using picture structure information. One of the main issues in the process of transcoding from MPEG-2 to HEVC is the efficiency of HEVC encoding. For HEVC encoding, a hierarchy picture structure called a random-access mode is usually used for high efficiency coding; however, the random-access mode may not always be the best structure for transcoding from MPEG-2 to HEVC. We propose some picture structures using MPEG-2 stream information. The experimental results show that the information on the picture coding structure in the MPEG-2 video stream is useful for transcoding MPEG-2 to HEVC. The proposed method with hierarchy picture structure using the MPEG-2 structure information reduced bitrate by 7.1% in the transcoding experiments.