Optimized temporal scalability for H.264 based codecs and its applications to video conferencing

H. Cycon, D. Marpe, T. Schmidt, M. Wahlisch, Martin Winken
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引用次数: 3

Abstract

In this paper, we describe and analyze a low complexity scalable video codec that extends our H.264-implementation DAVC. We can show that DSVC, our temporally scaled codec, attains an RD performance identical to the non-scaled version at comparable configuration. We achieve this by QP cascading, a method of assigning gradual refining quantization parameters to the declining temporal layers. The different quantization of frames does not lead to visual distinguishable quality fluctuations. This video codec is the core component of a software-based multipoint videoconference system, which works without MCU on a hybrid P2P network structure.
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优化了基于H.264编解码器的时间可扩展性及其在视频会议中的应用
在本文中,我们描述和分析了一种低复杂度的可扩展视频编解码器,它扩展了我们的h .264实现DAVC。我们可以证明,DSVC,我们的临时缩放编解码器,在可比配置下获得与非缩放版本相同的RD性能。我们通过QP级联来实现这一点,QP级联是一种将逐渐细化的量化参数分配给下降的时间层的方法。帧的不同量化不会导致视觉上可区分的质量波动。该视频编解码器是基于软件的多点视频会议系统的核心部件,可以在混合P2P网络结构下不需要MCU的情况下工作。
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