Filter DVD through AVIsynth, but keep menus etc

[2Bdecided]

Apologies for this basic question.

I want to take the video from a DVD, filter it in AVIsynth, re-encode it, and then drop that new video back into the DVD structure without changing anything else. i.e. I want to keep all the menus, chapters etc as-is - I want to re-use them, but with my own restored main video.

There's no copy protection or restriction on the DVD. I know how to do the AVIsynth filtering and MPEG-2 video encoding ;). FWIW I'm re-encoding to a lower bitrate to fit onto a DVD5 (though the quality is still far better than the DVD9 I started with).

Is it possible to re-use menus, chapter points, etc without too much messing around or re-creating them?

Cheers,
David.

[manolito]

AFAIK PgcEdit should be able to do this. Maybe you better post this in the IFO/VOB Editors subforum...

Cheers
manolito

[Ghitulescu]

Use vobblanker to replace the original video with the reencoded one.

[2Bdecided]

That looks great, thanks. If I get stuck, I'll be back!

Cheers,
David.

[TheSkiller]

I'm not entirely sure on this as I have used Vobblanker only once so far (with great success, after some fiddling) but I think you have to author a "fake" DVD that simply contains your reencoded movie in DVD compatible IFO/VOB structure so that Vobblanker can exchange it with the original one.
The fastest way to do that is probably Muxman, it creates a standard DVD structure from elementary streams (m2v/mpv, audio, subtitles) without a menu fast and easy.
Please correct me if it's in fact not needed but that's what I did back then when I used Vobblanker.
I also think you have to author the fake DVD with chapters otherwise they are lost. So, in other words, you have to extract everything that belongs to the main movie from the original DVD (audio, subtitles, chapters) are reuse it when creating the fake DVD for use with Vobblanker. Edit: Extracing these is no big deal using PGCdemux (http://www.videohelp.com/tools/PgcDemux) (chapters are called "Celltimes").

[manono]

That's exactly right, TheSkiller. Ghitulesco gave the short version of what has to be done. And, as manolito said, PGCEdit can often, but not always, do the same thing.

[EuropeanMan]

MuxMan + PGCEdit are BOTH REQUIRED to be "complete" about it... otherwise MuxMan for a fake DVD (no menu) followed by VobB to sub in new video for old...

[MrVideo]

Find a copy of the old DVDShrink 3.2 program. It will do all that for you. DVDShrink only works on non-copy protected DVDs.