Fields problem

[themaster1]

I have this video (sample-3MB) the which i have recorded some time ago (back when i was experimenting) and directly in DivX / interlaced.

I tried the msu field shift filter but it doesn't seem to cure the problem so i guess i'm using the wrong tool.
If someone would be glad enough to enlighten me...

[jagabo]

That video was incorrectly resized from the original 576 line interlaced PAL source. The fields are co-mingled. You will not be able to fix it.

[themaster1]

Yeah it was Pal indeed and has been recorded with a 640x480 size.
So that's the final word of your expertise, "no recoverable"?

[jagabo]

An interlaced frame contains two half pictures. One half picture is in all the even numbered scanlines, the other in all the odd numbered scanlines. That video was resized from 576 lines to 480 lines without any consideration for this. That means some of the even numbered scanlines have become odd scanlines, some of the odd scanlines have become even scanlines, and some scanlines are a mix of the two. There is no way to restore the original half pictures and therefore no way to cleanly convert them to progressive frames.

About the only thing you can do is blend deinterlace. That will get rid of the comb artifacts but leave you with frames that look like double exposures.

[themaster1]

Alright, well i have opted for the blend finally, it doesn't look that bad but that's just my opinion.Thanks for the advice.