Light Tunnel Effect?

Hello.

I would like to make a live video input to something like Photo Booth's Light Tunnel effect.
Set a mask and expand the edge's pixel outward,
or
Can I just make the masked part zooms to cover whole screen and tweak it like an Radial Blur? something like that..

exploding looks :)

any recommendation?

ps. I don't wanna use any 3D that pressures fps rate.

Thanks!