Most good object, DirectShow Filter modify from transform filter can spy all media type by hook KSEevent .

DirectShow开发工具包，包含Muxer, Parser, Reader, Source, Transform等几大类Filter事例。例：AviSplitter，MpegSplitter, OggSplitter, RealMediaSplitter, CddaReader, AudioSwitcher, Mpeg2decFilter等。

DirectShow Compensation Effect Transform Filter