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Conference Paper
A Precise Audio/Video Synchronization Scheme for Multimedia Streaming
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- Authors
- Won Sup Chi, Soon Heung Jung, Jeong Ju Yoo, Kwang Deok Seo
- Issue Date
- 2009-01
- Citation
- 한국방송공학회 학술 대회 (IWAIT) 2009, pp.49-54
- Publisher
- 한국방송·미디어공학회
- Language
- English
- Type
- Conference Paper
- Abstract
- Synchronization between media is an important aspect in the design of multimedia streaming system. This paper proposes a precise media synchronization mechanism for digital video and audio transport over IP networks. To support synchronization between video and audio bitstreams transported over IP networks, RTP/RTCP protocol suite is usually employed. To provide a precise mechanism for media synchronization between video and audio, we suggest an efficient media synchronization algorithm based on NPT (Normal Play Time) which can be derivable from the timestamp information in the header part of RTP packet generated for the transport of video and audio streams. With the proposed method, we do not need to send and process any RTCP SR (sender report) packet which is required for conventional media synchronization scheme, and accordingly could reduce the number of required UDP ports and the amount of control traffic injected into the network.
- KSP Keywords
- IP networks, Media synchronization, Multimedia streaming, Streaming system, Synchronization Mechanism, Synchronization scheme, Video synchronization, control traffic, digital video, synchronization algorithm