Question on filters during multipass encoding

[the_wildcard]

Stupid question, but if I run the built in deinterlace filter from Virtualdub (or any other filter for that matter) and use a 3 pass encoding with Divx, does it reduntantly deinterlace so many times?

I know the first pass does not generate video when multipassing in Divx, but the subsequent 2 times will. From all of the FAQ's I have read, they reccommend that you leave the filter settings the same for each pass.

But does the computer deinerlace or use the filter 2 times? (assuming no video is generated the first time?)

[Cyberman]

Didn´t you ask that very question somewhere else already?

The answer is, of course - NO.

If you think about it, it´s quite logical. VDub, or any program, takes the SOURCE video, processes it, and feeds it to the codec, taking the PROCESSED video and saving it.

During the next pass, the SOURCE video is taken again, processed and feed to the codec, taking the PROCESSED video and saving it.

And so on and so on...

Why should it feed the resulting video back in, anyway? There´s no use in making it recursive, is there?

[the_wildcard]

Haha yes I also posted this quesiton on virtualdub.org's forum.

Thank you for the response!