I use Directshow quite a bit in my work, and quite like the way it works. Anyway since the November, Directshow headers, samples and include files are no longer shipped as a part of DirectX SDK. It turns out that Directshow has been moved to the Extras portion of the SDK. So in case any of you use Directshow and wanna grab a copy, you can do so by downloading the DirectX SDK extras. Also Mike Wasson provides some further information. Looks like directshow is being moved into Platform SDK. So I guess in the future you will be able to download it from here
Technorati tags: directshow, directX SDK, platform sdk