Why does this happen with divx compression?

[Rpgamer007]

I have a 23 minute .vob (dvd-rip) file (I own the DVD it is just for backup and my own personal experimentation with compression so I hope this isn't against the TOS). Since it is a dvd rip the .vob file is of the highest quality. I am trying to get the file (cut down to 20 minutes) to be no more than 100 MB. I have almost succeeded in doing this but I am having one issue. I am compressing/encoding/converting the file with Xmpeg (a great program FYI). I have gotten the file to a decent
size with fairly good quality using 2-pass divx encoding and deinterlacing turned on but I have one issue. The file needs to be deinterlaced because it looks horrible if I do not deinterlace but it causes this weird effect. The effect creates strobed lines accross the screen as the video plays. To explain what I mean here is a screen capture of my compressed video. This happens during scenes with any type of motion. Download it at http://www.dslreports.com/r0/download/117515;793c0f675583840798b0e70473249d1d/lain.jpg What is the problem? What type of interlacing should I use? There are a few options. Also should I use bilinear or bicubic filtering when resizing the file to half-size?

[John Doe]

Seen the picture of your problem. Whats happening is the video isn't deinterlacing correctly. Which is the problem with most smart deinterlacers. Still haven't found one that works right no natter what the setting. IF anyone has found one that does, let me know. I just finished a rip/encode of an Outlaw Star episode. I used avisynth for deinterlacing then encoded it to MPG-1 with tmpgenc. There is a lot of guides on this subject on various site. Shouldn't have anyproblem finding them with a search engine.

I use this rule of thumb for resizing. Bicubic for enlarging. Bilinear for reducing.

Hope this helps.