Design of Information Distilling Source Filters Based on DirectShow

Aiming at confidential information that embeds in video,a new source filter that based on DirectShow is proposed.The DirectShow architecture and two modes of transmitting data are first analyzed.And then how to distill the confidential information and play video fluently based on DirectShow are discussed.The results and conclusion are finally given.It is shown that the filter can realize the anticipated target and has a practical value.