Spatial transcoding from scalable video coding to H.264/AVC

Authors:
Hui Liu;Ye-kui Wang;Ying Chen;Houqiang Li
Affiliations:
University of Science and Technology of China, Hefei, China;Nokia Research Center, Tampere, Finland;Tampere University of Technology, Tampere, Finland;University of Science and Technology of China, Hefei, China
Venue:
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Year:
2009

Citing 2
Cited 1

Overview of the H.264/AVC video coding standard

IEEE Transactions on Circuits and Systems for Video Technology
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard

IEEE Transactions on Circuits and Systems for Video Technology

A videoconferencing-oriented hybrid-domain H.264/SVC to H.264/AVC spatial transcoder

PCM'12 Proceedings of the 13th Pacific-Rim conference on Advances in Multimedia Information Processing

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Abstract

Scalable Video Coding (SVC) is backwards compatible to H.264/AVC in the sense that the base layer sub-bitstream is decodable by an H.264/AVC decoder. However, there are applications wherein it is desirable for an H.264/AVC decoder to obtain a higher resolution video representation than the base layer within SVC. In order to fulfill the needs of such application scenarios, transcoding of SVC enhancement layers to H.264/AVC is required. This paper presents a transcoding scheme that is capable of transcoding a spatial scalable SVC bitstreams to H.264/AVC bitstreams that provide high resolution than the H.264/AVC compliant base layer. To reduce the complexity at the transcoder, a fast mode decision (MD) process is proposed, where in the original SVC macroblock coding modes and motion information are reused as much as possible. Experimental results show that proposed scheme performs elegantly compared with full-decoding-and-encoding transcoding with low computational complexity.