How to receive frames from a frame server like Avisynth?

I have found it unu开发者_开发问答sually hard to find any documentation on the technology behind frameserving. I'm not even sure if this has anything to do with DirectShow or not.

How can I receive video frames (ignoring audio) from a frame server like Avisynth in a .NET program? Anything with (links to) examples will be best, but even just a few words about how things fit together will be appreciated too.

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In exactly the same way that you would open and get video frames from an AVI file. Avisynth installs itself in such a way that the only difference an application sees between .avi and .avs files is the file extension itself.