| 天地互连视频会议系统视音频传输模块 |
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| 引用本文： | 肖强,申瑞民.天地互连视频会议系统视音频传输模块[J].计算机工程,2005,31(2):191-192,227. |
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| 作者姓名： | 肖强 申瑞民 |
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| 作者单位： | 上海交通大学计算机科学与工程系,上海,200030 |
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| 基金项目： | 国家科技攻关计划网络教育关键技术及示范工程项目(2001BA101A0) |
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| 摘 要： | 介绍了基于天地网的视频会议系统中视音频传输模块的设计和实现。它利用RTP协议来传输视音频数据和相关的统计信息，实现了视音频数据在天网(卫星)和地网(CERNFT)的互连互通，在卫星回传带宽小、双向信道不对称的条件下较好地解决了诸如延时和乱序、带宽自适应以及唇音同步等难题。
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| 关 键 词： | 视音频 视频会议系统 互连互通 带宽 回传 信道 RTP协议 传输模块 数据 频数 |
| 文章编号： | 1000-3428(2005)02-0191-02 |
Video & Audio Transport Module in Video Conference Based on Satellite and CERNET |
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| XIAO Qiang,SHEN Ruimin.Video & Audio Transport Module in Video Conference Based on Satellite and CERNET[J].Computer Engineering,2005,31(2):191-192,227. |
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| Authors: | XIAO Qiang SHEN Ruimin |
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| Abstract: | This article describes the design and realization of video and audio module in video conference system based on satellite and CERNET. It transports video and audio data and relevant statistics information via RTP(real time protocol), realizes the mutual connection of video and audio data between satellite net and Internet, solves many problems such as delay and jitter, auto-adaptation to bandwidth and lip synchronization under the condition of narrow back-transfer bandwidth and asymmetry bi-direction channels. |
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| Keywords: | Mutual connection between satellite and CERNET Video conference RTP Auto-adaptation to bandwidth |
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