Video Transcoding for H.264/AVC Inter-frameDown-Sampling

• Main Authors: Pei-Fang Hsu, 徐蓓芳
• Other Authors: Zone-Chang Lai
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/02430248394995170401

碩士 === 國立臺灣海洋大學 === 資訊工程學系 === 96 === Due to the rapid development of electronic technology . The multimedia information is shared extensively. However different user has different electronic product, network bandwidth and resolution , the development of video transcoding is highly desired . H.264/AVC is a new compression standard . It has higer compression ratio and higer quality. However it needs huge quantity of computations , and requires a lot computing time. This thesis proposes a new architecture for the H.264/AVC transcoder . Our method avoids a lot of time to calculate motion vectors for the down-sampled pictures . This architecture uses the homogeneous transcoder . It will perform pixel down-sampling , motion vector mapping , and the merge of the best reference and modes .We only need to send some important value to encoder . This important value let encoder don’t need to compute motion estimation , search the best reference and find the best mode .