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- W1991087636 abstract "Scalable Video Coding (SVC) is an extension of H.264/AVC, aiming to provide the ability to adapt to heterogeneous environments. It offers great flexibility for bitstream adaptation in multi-point applications such as videoconferencing. However, transcoding between SVC and AVC is necessary due to the existence of legacy AVC-based systems. This paper proposes a 3-stage fast SVC-to-AVC transcoder for medium-grain quality scalability (MGS). Hierarchical-P structured SVC bitstream is transcoded into IPPP structured AVC bitstream with multiple reference frames. In the first stage, mode decision is accelerated by proposed SVC-to-AVC mode mapping scheme. In the second stage, INTER motion estimation is accelerated by an optimized motion vector (MV) conjunction method to predict the MV with a reduced search range. In the last stage, Hadamard-based all zero block (AZB) detection is utilized for early termination. Simulation results show that proposed transcoder achieves very similar coding efficiency as the optimal result, but with averagely 92.3% computational time saving." @default.
- W1991087636 created "2016-06-24" @default.
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- W1991087636 date "2013-05-01" @default.
- W1991087636 modified "2023-10-02" @default.
- W1991087636 title "A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder" @default.
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- W1991087636 doi "https://doi.org/10.1109/iscas.2013.6572179" @default.
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