Research And Implementation Of Video And Audio Engine Technology In Multimedia Client

Real-time collaborative platform, instant messaging and web video conferencing softwares work in the mode of multimedia client. The video and audio engine which give technical support for multimedia client is costly and difficult to maintain, and therefore, self-developed high-performance video and audio engine is very necessary.Base on the analysis of video and audio technologies, this paper research the basic principles and functions of Microsoft DirectX in Windows system, and design a capture and playback scheme with DirectX. With the codec of H.264 and Speex, the video and audio engine is designed and implemented. The engine combine the various processes of video and audio data in multimedia client, shield the complex concepts of video and audio, and provide a clearly interface for the developors of multimedia client application. After testing the Multimedia client that integrated the engine, the result show that the engine matches the design requirements and could give real time service of video and audio efficiently.