Adding SVC Spatial Scalability to Existing H.264/AVC Video
ICIS '09 Proceedings of the 2009 Eigth IEEE/ACIS International Conference on Computer and Information Science
Architectures for fast transcoding of H.264/AVC to quality-scalable SVC streams
IEEE Transactions on Multimedia
An approach for an AVC to SVC transcoder with temporal scalability
HAIS'10 Proceedings of the 5th international conference on Hybrid Artificial Intelligence Systems - Volume Part II
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Scalable Video Coding (SVC) is a recent extension of the ISO/ITU Advanced Video Coding (H.264/AVC) standard, which allows adapting the bitstream easily by dropping some parts of it named as layers. This adaptation makes possible that the same bitstream meets the requirements for reliable delivery of video to diverse clients over heterogeneous networks using temporal, spatial or SNR scalability, combined or separately. Since the SVC design requires scalability to be provided at the encoder side, the existing contents cannot benefit of it. Efficient techniques for converting contents without scalability to a scalable format are desirable. In this paper, an approach for temporal scalability transcoding from H.264/AVC to SVC is presented and the impact of the GOP size is analyzed. Independently of the GOP size chosen, around a 60% of time saving is achieved while maintaining the coding efficiency. Moreover, this technique could be used to transform an H.264/AVC bitstream without temporal scalability to another H.264/AVC bitstream with hierarchical structures that provides temporal scalability.