网络多媒体课件非线性编辑系统同步技术研究

Research on synchronization of network multimedia courseware nonlinear editing system

详细研究了开发网络多媒体课件非线性编辑系统时需要解决的各种同步技术,给出了基于时间线机制的视音频媒体对象多通道同步实现模型,以及ASF对象与课件资源对象的同步打点技术方案,并结合DES与VC技术给予实现。该系统的研究与开发,使得对网络多媒体课件元数据的实时采集,课件媒体的编辑、同步合成、网络发布等操作更加灵活。

Synchronization technologies among various media objects is studied in detail. A video-audio synchronization model based on timeline mechanism is presented, at the same time the synchronization between ASF objects and courseware resource objects is described. The models are implemented with DES and VC. Studying and developing for the system can make it more flexible for real time collecting metadata, editing courseware media, synchronously composing, network releasing and so on.