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| Content Provider | Springer Nature Link |
|---|---|
| Author | Jung, Tae jun Seo, Kwang deok |
| Copyright Year | 2015 |
| Abstract | Media synchronization is used to correctly playback a video stream with its associated audio. To support synchronization between video and audio streams transported over IP networks, an RTP/RTCP protocol suite is usually employed. In conventional server-driven media synchronization, the server needs to periodically transmit an RTCP sender report (SR) packet to provide the client with a UTC time in NTP format corresponding to the RTP timestamp carried by each RTP packet. In this paper, we propose a precise client-driven media synchronization mechanism for an RTP packet-based multimedia streaming service. In the proposed method, the server does not need to send any RTCP SR packets for synchronization. Instead, the client device derives the precise normal play time (NPT) for each video and audio stream from the received RTP packets containing an RTP timestamp. Simulations show that the proposed client-driven synchronization method can provide accurate media synchronization without employing an RTCP SR packet and accordingly reduce the initial synchronization delay, the processing complexity at the client device, the number of required user datagram protocol ports, and the amount of control traffic injected into the network. |
| Starting Page | 455 |
| Ending Page | 464 |
| Page Count | 10 |
| File Format | |
| ISSN | 18618200 |
| Journal | Journal of Real-Time Image Processing |
| Volume Number | 12 |
| Issue Number | 2 |
| e-ISSN | 18618219 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2015-04-07 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Media synchronization Lip synchronization RTP/RTCP Video streaming Synchronization accuracy Image Processing and Computer Vision Multimedia Information Systems Computer Graphics Pattern Recognition Signal, Image and Speech Processing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Information Systems |
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