TextureFX

TextureFX is a series of modules/effects for image manipulation on the GPU comparable to (but not compatible with) FreeframeGL. If you have the Addonpack in the NodeBrowser just type 'fx' to filter for all available nodes in this category.

FreeFrame

All about FreeFrame and vvvv can be found on the dedicated freeframes page.

Undistort

If you want to get rid of lens distortion use the Undistort (DShow9)? node.

Deinterlacing

Use VideoTexture (EX9.Texture VMR9 YUVMixingMode). It should provide deinterlacing for most video types. If you want to deinterlace a live analog video source put a Cheater (DShow9) between the VideoIn and the VideoTexture nodes, which does some magic internally to make the stream deinterlaceable by the videotexture.