Transcoding Schemes from H.264/AVC to H.264/SVC with Spatial Support
Date Issued
2014
Date
2014
Author(s)
Sun, Chuan-Wei
Abstract
As huge numbers of heterogeneous devices and digital videos are getting widely used, Scalable Video Coding (SVC) is designed to provide spatial scalability to meet the multi-resolution requirements. Nevertheless, due to limited computing capability, these handheld devices do not support SVC encoder. Instead, most video content is encoded in non-scalable video fashion, e.g. H.264/AVC or H.263, MPEG-2/4, etc. In this work, we try to design a transcoding mechanism from H.264/AVC to H.264/SVC to support spatial scalability requirements. Specifically, we make use of the coding mode information of original H.264/AVC bitstreams together to determine a small set of candidate modes of other layers to speed up the transcoding process. Experimental results show that up to 95% encoding time reduction and almost without PSNR loss can be achieved compared with re-decode and re-encode approach.
Subjects
影像轉碼
H.264/SVC
可適性視訊編碼
模式選擇
Type
thesis
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