Crossfading video clips

Hi gurus.
I'm doing some experiments with the DirectShow "mixer" filter - don't remember the exact name, but I'm sure you know what I'm talking about.
It's powerful and very easy to use, but I only managed to mix together two or more synchronized clips!
Let me explain: I would like my application to behave like a DJ - ...er, should I say VJ ? - i.e. start clip1, look at clip1, when clip1 is almost finished start clip2 and then crossfade clip2 to clip1.
Well, how can I play or stop a single stream in the filter graph? I only manage to stop or play the whole graph!
Anyone can help?
Thanks!

Hello,

I think you need transition effect between video clip.

try VideoEdit ActiveX Control that include a lot of samples

http://www.viscomsoft.com/products/videoedit/

The ActiveX you suggested is about "rendering", i.e. processing clips and producing a "rendered" clip.
What I'm talking about is mixing "live" any video clip - and video-capture lines too!
I alread can do this using the DirectShow mixer, but I can't independently pause or play the clips being mixed.
Regards.