Abstract: Aiming at the problems of developing software with Tuner card SDK or Video for Windows(VFW), which depends on concrete equipment and high cost, this paper proposes a network television system based on Microsoft DirectShow and COM technologies. The system enhances the generality and declines the cost. And it uses IP multicast technology to transmit data, so that it saves network bandwidth resources and improves the efficiency of data transmission.

Key words: DirectShow technology, multicast, filter, COM technology

摘要： 针对使用Tuner卡所附带的SDK或基于Video for Windows技术开发软件时依赖具体设备和成本高等问题，提出一种基于DirectShow和COM技术的网络电视播放系统。该系统采用IP组播技术实现数据的多点传输，节省了网络带宽资源，提高了数据传送的效率，并具有通用性。

关键词: DirectShow技术, 组播, 滤波器, COM技术

CLC Number: 

• N945