Deinterlacing an already-divx-compressed file

[magicalpig]

I learned about interlacing of video sources through my mistakes.

I have some divx files which are interlaced but the source is gone. Can I use virtual dub somehow to decompress and then recompress while applying the deinterlace filter? I started out by putting video in full processing mode, adding the deinterlace filter and then I got confused when I went to the DivX 5.0 compression options screen: What bitrate do I choose? Do I do 1 pass or 2? if 2, will it get deinterlaced twice??


Thanks

[jggimi]

I have not heard of anyone having success with "fixing" improperly deinterlaced content.

De-interlacing is done before resizing, and if it's already encoded, it's probably too late.

You can hope ... but I doubt you'll get much positive response. Sorry.

[RadicalEd]

Well like jggimi said if its resized already you're pretty much screwed but if you still have all 480 lines of vertical res then deinterlacing will be a breeze (that is.. as long as none of the interlace lines got skewed into a different field by a macroblock or other artifact O.O). Do two pass, it might take a little longer since you're running a filter but unless you want to create an intermediate uncompressed avi then you have to deal with that- and no, it won't double-deinterlace the video or anything. Hope it works.

[manono]

I say forget it. The fields are no longer there. You'll most likely end up with a worse mess than you started with.