How to crop an area from a video using AviSynth?

[ziptip]

Hello again,

I have a video that is 640 x 480 pixels
I want to get only the square starting at 50,50 having 160 pixels width and 120 pixels height.
And to preserve the audio.

How can I do that in AviSynth?

[jagabo]

Crop(50,50,160,120)

Cropping doesn't effect audio.

[ziptip]

Thanks!