摘要： 对基于IP组播的纯软件视频会议系统中视音频服务质量控制技术进行了研究，基于RTP/RTCP协议，提出了通过使用高效的编解码器和多线程、设置视频关键帧、动态调整发送端速率、采样缓冲区和接收缓冲区大小等技术，实现了丢包率、声像同步和时延抖动的控制，效果令人满意。
关键词:
IP组播,
实时传输协议/实时传输控制协议,
服务质量,
视频会议
Abstract: This paper studies the key controlling technologies of video-audio QoS in software video conference. Based on RTP/RTCP, some methods are presented to realize the control of the data lost, audio-video synchronization and delay jitter, such as using high efficient coder/decoder, multi-thread programming, setting video key frame and adjusting the sender rate, sampling and receiving buffers dynamically. The results indicate that the performance of the system is satisfactory.
Key words:
IP multicast,
RTP/RTCP,
Quality of service,
Video conference
中图分类号:
宋 玲;胡凡良. 纯软件视频会议系统视音频QoS的研究与控制[J]. 计算机工程, 2006, 32(16): 221-223.
SONG Ling;HU Fanliang. Research and Control of Video-audio QoS in Software Video Conference[J]. Computer Engineering, 2006, 32(16): 221-223.