Is VOB deinterlacing possible?

[geocapital]

I am not sure if this is the right forum, but then again is the most related...

I ripped psycho.

In DVD2AVI it says it's PAL and interlaced, at 20000fps.

I want to avoid de-interlacing while encoding, to avoid loss of quality.

Can I de-interlace the VOBs directly? That is, get a set of VOBs like being read by a player? I don't want a filter. I want to get straight to the source. Since the player can, then why I can't.
I have already ripped the VOBs and new ripping is available.

thanks anyway.

Geo

[Got Milk?]

The player deinterlaces the film as you watch it. There's no way to deinterlace the VOBs directly. You're gonna have to deinterlace them with a filter while encoding - there shouldn't be a quality loss.

[Pauly]

Sorry to disagree but deinterlacing will always produce a quality loss unless the original source was progressive e.g. shoot on film.
This is because the two fields are shoot at different times and so will produce motion artefacts when combined together.

Geocapital you don't say what encoder you are using. I use CCE to produce DVDs to watch on my TV and so don’t need to deinterlace.
When I load my VOBs in DVD2AVI I scan through the movie looking at the picture, if the source is truly interlaced then on scenes with motion you will see the two fields interleaved with each other producing jagged edges on items that move. If this is so then I just untick progressive and zigzag scan order in CCE and encode as interlaced. If you don't see this interlacing effect in DVD2AVI then the original source was actually progressive and you can run CCE with the progressive options to produce a progressive encode.

Hope this makes sense and is of help

Pauly

[geocapital]

I seem to have found a solution. I wanted to rip Psycho.
The problem was that from a point and after, the source was interlaced. I could see the lines you mentioned in the motion.

But only after some point. So, I was looking to deinterlace the vobs that appeared to have the problem. Unfortulanetly, the change was in the middle of a vob and cell and chapter.

Well, I haven't checked it yet, because of other inconvenience, but the problem was solved, probably like this.
When I open the d2v via GKnot, and choose Save, to save the avs, I choose Field deinterlace. Then the avs looks ok. You can see a ghost like motion in the part that was interlaced, but I think that this is normal for an old movie, originally filmed at 20.000 fps.
I encoded with V-Dub and divX5.0.2. I was wrong choosing basic deinterlace in the advanced options (source progressive, basic deinterlace). The movie was probably deinterlaced for the avs.

Actually, I hope so. The V-Dub crashed and I haven't seen the end yet.

[Guest]

It may be that the phase is shifting by one field. Try using Telecide by itself from the Decomb package (do not decimate).