A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder

Lei Sun, Zhenyu Liu, Takeshi Ikenaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

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.

Original languageEnglish
Title of host publication2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
Pages1648-1651
Number of pages4
DOIs
Publication statusPublished - 2013 Sep 9
Event2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 - Beijing, China
Duration: 2013 May 192013 May 23

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Conference

Conference2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013
CountryChina
CityBeijing
Period13/5/1913/5/23

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Sun, L., Liu, Z., & Ikenaga, T. (2013). A mode-mapping and optimized MV conjunction based MGS-scalable SVC to AVC IPPP transcoder. In 2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013 (pp. 1648-1651). [6572179] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2013.6572179