remove dust and scratches in video

[fenomeno83]

How can I remove dust and scratches in a video?here there is an example:
http://digilander.libero.it/lazzaraalessandro/screen.JPG

PS:I want preserve quality(I want only delete these random spots)

[fenomeno83]

solved with removedirt

[TwoToad]

Ah thanks for coming back to update this. I have some dvds with dirt in the frames like yours and was watching this thread. =) I'll give removedirt a try also.

EDIT: Yup, it got rid of the "lint" that was showing on some frames. Awesome!!