PAL DVD. Fieldorder change mid way through main film

[psmuk]

I have a DVD where the main film consists of 8 chapters after using the Big3 chapters 1-7 play perfectly (these are progressive), however the 8th one is interlaced can i right add a few line to the AVS script to correct this so the whole movie plays fine on standalone ?? If so any suggestions how to do this, I have the exact frame where the movie changes to interlaced to the end of the movie. Any help would be appreciated

Thanks in advance

[Matthew]

Encode with progressive unchecked in CCE (and use zigzag - doesn't matter much if the credits - which I assume are the interlaced part - aren't encoded with the better "alternate"). Plenty of progressive PAL DVDs are marked as interlaced anyway.

As far the tff/bff flag is concerned, it is irrelevant for progressive material...so you should be able to change the field order to bff using pulldown, restream or whatever. That's if the interlaced part is bff, of course.

Obviously, you can also deinterlace, but I'm not sure what the best approach would be.

[psmuk]

Chapter 8 is the last part of the movie, about 20 mins before the end. Could a AVS script re-code this correctly ???

Thanks

[Matthew]

Oh okay, well what I said still does apply, if you don't mind the last bit of the film encoded using zigzag scan (or the first, progressive, part encoded as alternate). I don't think the effect would be that bad, and de-interlacing causes its own problems as well (which is what you are asking about when you refer to avs scripts). Bitrate is an important factor.

But since it isn't credits what I might do is encode the two bits separately and then merge the files (or possibly leave the interlaced bit unre-encoded, depending upon how long the movie is).

You can use the frame range setting in CCE to do this, but take note that the last frame in a selection is not encoded. From the manual:

"If “from 0 frame to 300th frame” is specified here, for example,
300 frames, from 0 frame to the 299th frame, are actually
encoded. Note that the 300th frame is not encoded."

[scharfis_brain]

I think, That dynamic phase shifts for PAL-Film can easily be undone by using

telecide(order=?,guide=2,post=0)

where ? defines the fieldorder (0 or 1) of your Video.

using telecide you can encode your video progressive.

[malum]

what about just compressing the first 7 chapters and then adding the eighth unchanged (using VOBedit) and creating new IFOs for them using IFOedit.

Youd have to calculate the size you need to compress the first 7 chapters to.