DVD question about audio

[attmay]

I have two versions of the same film; one has widescreen picture but rather poor 2.0 sound, one has a DD 5.1 track but is pan/scan! Anyway, I want to know if I can backup the widescreen picture with the 5.1 sound track using what I have. I want to keep the 5.1 sound as is; no mixdowns or anything, just sync it with the 16x9 version of the film.

I have:

iMac G3
LaCie External DVD-+RW
Roxio Toast 6 Titanium
DVD Backup
DVD20ne
Sizzle

Any help?

[WiseWeasel]

The short answer is probably not. You'll have difficulty getting the audio to synch with the video due to minor dvd mastering differences in timing. The long answer is to give it a try, and see if the audio magically syncs up, but it's an awful lot of work for something that's probably not gonna work.

[attmay]

Hmm. But how do I give it a try with what I've got. Is there any other software I shall need?

[AntnyMD]

To do what you want with the tools that you have, try this:
Rip the 16x9 disc in YadeX or a ripper of your choice that will give you one continuous .M2V file for the movie (video only). Rip the other disc so you get one continuous .AC3 for the 5.1 audio. Rename these two files to the same name (i.e., movie.m2v and movie.ac3).

Open Toast 6, click Video and choose DVD. Add movie.m2v to the window. Toast will detect this video has no audio and ask you to locate the audio. It should have automatically detected movie.ac3, but Toast is fickle. Add your audio.

At this stage use the keyboard combination Apple-D to make a .toast disc image. Let it run -- it should not attempt to re-encode, only multiplex and author.

Mount the resulting disc image and check for sync in Apple DVD Player. If it works then you know you can go into other programs and reauthor so you can add chapter markers, menus, etc. I suggest doing it this way at first so you can find out fairly quickly if the files will be in sync. If you find they are not in sync, you've saved yourself a lot of time designing and authoring a project that won't be suitable.

[pixeljammedia]

Okay, A possible way of doing this:
1) Rip both DVDs using Yade X to rip to elementary streams
2) Take the AC3 file from the 5.1 and multiplex it with the video of the widescreen. You can use FFMpegX or MPEG2Works to multiplex as a DVD mpeg.
3) Test the new mpeg in VLC to check the synch.

Another way:
1) Use step 1 above
2) Use Cinematize to transcode the widescreen M2V to DV.
3) Open up the mov in Final Cut Pro and add the 2nd soundtrack
4) Shift around the audio (all 6 channels of it) and play with he speed/duration setting until it is in synch.
5) Export each individual track as an AIFF and reencode the 5.1 AC3 using DVDSP's A.Pack.
6) multiplex the new altered AC3 with the original widescreen m2v.
7) Wonder why you went through all this trouble in the first place.

[attmay]

How does one get YadeX? I've been using Mac the Ripper.

[WiseWeasel]

http://www.macetvideo.com/yadex/dl_yade.html

[attmay]

Thanks, and I downloaded Yade X but every timeI try to get the file it says: Region mismatch. My drive is external, you see.

[WiseWeasel]

I'd say to try using MTR 2.0b1 in Title mode (as it's more compatible than MTR 1.5.6), and then use something like Extractor or something to get the elementary streams from the VOB. Repeat for the other version of the DVD, stir, bake and serve. Let me know if you want to get in on the beta test.

[attmay]

Okay, I have gotten the elemental .m2v of the 16x9 version successfully, and the elemental 5.1 .ac3 successfully, but there is a difference of 851 milliseconds between video and audio that makes sync subtly but noticeably off. I have gotten the 6 separate channels as AIFF files, but with G3 and a budget (read: zip) I can't use DVDSP, thus no A.Pack. I wish I could A.Pack separately. Is there anything else, as I really want the 5.1 sound in 5.1. The parts I've previewed are fantastic.

[AntnyMD]

Why do you have AIFF files at this stage? You only need the ac3 file. That slight sync issue you're experiencing is probably due to the fact you ripped the FBI warning or whatever. Try re-ripping the video without selecting the VTS_01_0.vob file.

[attmay]

Perhaps. I shall try it the way you told me and I will be back.

[attmay]

Update: The 5.1 channel file is 24 frames (NTSC) longer than the picture, and this difference is at the beginning rather than the end. I am trying various options in ffmpegX.