一個播放avi檔的filter graph.Source Filters主要負責取得資料，資料來源可以是文件、網路、或者電腦裡的介面卡、Webcam等，然後將資料往下傳輸；Transform Fitlers主要負責資料的格式轉換、傳輸；Rendering Filtes主要負責資料的最終去向，我們可以將資料送給音效卡、顯示卡進行多媒體的展示，也可以輸出到文件進行存儲。三個部分並不是都只 有一個Filter去完成功能。恰恰相反，每個部分往往是有幾個Fitler協同工作的。

-Avi files a player filter graph.Source Filters is mainly responsible for obtaining information, data sources can be documents, network, or computer adapter, Webcam, etc., and then down the transmission of information　Transform Fitlers is mainly responsible for data format conversion , transmission　Rendering Filtes information is mainly responsible for the ultimate destination, we can send the information sound card, video card for multi-media display, can also output to a file for storage. Three parts is not the only one to complete the function Filter. Rather, each part is often several Fitler collaborative work.