Filter Graph Configuration

The association between DirectShow filters and CSA makes DirectShow filters a powerful and relatively safe method for manipulating data from a kernel mode Stream class driver. The flexibility of DirectShow makes numerous configurations of filters possible. The following diagram shows one possible configuration of user-mode DirectShow filters for simultaneous preview and capture of video to disk.

In this diagram, an incoming TV signal can be tuned in with the Tuner filter and routed with the Crossbar filter. The filter graph passes data in various streams to the video or audio capture filters to be saved on disk. This includes audio streams, video streams, and any other ancillary data in various streams such as SMPTE timecode or closed captioning data.