Invalid DVD Navigation Structure

[bartrobinson]

Ok, here comes a little rant with a request for help.

First of all, I have a problem compressing a DVD-Video that is on a dual layer disk (or DL .ISO) from ~9 GB down to a single layer ~5 GB.


Now before you moderators and lawyers get all up tight and close this thread, listen up! This is a privately owned video disk containing video from an event that my client owns all rights to and there for is not copy protected and does not contain copyrighted material. So don't tell me about rule #6 or #19! Yes, I have been trying to use that program that's "bad" which makes large DVD's smaller. So don't condemn that program or the people that use it unless they specifically mention trying to "backup" a copyrighted / copy protected video disc! It is a legitimate program with a legitimate use. Yes, please, close the thread and ban the user who asks why they can't copy Spiderman, but not the rest of us.


This disc legitimately has a problem with a invalid dvd navigation structure. I'd like some information on finding / correcting / or side stepping the problem and what programs I might be able to use. I'd prefer to hear about solutions involving freeware programs or simple fixes (not re-authoring). Thanks! I await your replies.

[blutach]

Did you make the disk and, if not, own any copyright in it (please give full details)? Otherwise, we can't help.

Regards

[bartrobinson]

No, I did not create the original disc. If I did, I wouldn't need to shrink it, I'd just re-author it using single layer compression settings. It's a recording of an awards banquet. To the naked eye, the structure looks quite normal. Audio_TS (nothing in it), Video_TS (w/ VIDEO_TS.BUP, .IFO, .VOB, VTS_01_0.BUP, .IFO, .VOB, and VTS_01_1.VOB to VTS_01_7.VOB). It appears to be a menu, and one long video with chapters in between each speech.

I've already made duplicates of the disc as a dual layer version and it copied fine (a.k.a., no copyright b.s.) and played fine. It just appears that the disc has something weird with the navigational structure that makes problems when trying to analyze it or something.

I don't want info on how to crack a protection scheme, I want info on how to track down some other reason I'm having this problem.

[blutach]

Those packages that come with DVD Cameras are typically pretty ordinary and are prone to error. I'd run the project thru FixVTS (which is a prohibited program here). So, instead of that, I will recommend running the project thru VobBlanker.

Failing that, a mock strip of VTS 1 with IfoEdit is the way to go - see link in my signature.

Regards

[bartrobinson]

Thanks, I appreciate the unbiased response and suggestions. Hopefully I can finish the thread with a summary of what worked.

[gonwk]

Hi Blu,

Would VobBlanker really work on this situation!?!? If so, how???

Thanks,

G!

[blutach]

I don't have the IFOs and VOBs so can't be precise. However, there is a fair chance that many pointers are "out". VobBlanker fixes these.

Regards

[bartrobinson]

Ok, got it to work. At this point I don't know what the exact cause of the problem was. It was a complete non-issue for DVD Rebuilder though. I mounted the ~9 GB *.ISO as a virtual drive with Microsoft's free (surprise surprise!!) Virtual CDROM Control Panel (probably not a key factor). Opened the disc in the "Source Path" of DVD Rebuilder. Selected the "Video Title Sets" and "Audio Tracks to Keep". Selected "HC Encoder" in the Mode>HC Encoder Mode menu. Deselected "One Click Mode" in the Mode menu (probably not a key factor). Selected "Best (Slowest)" in the Options>HC Encoder Options menu. Deselected "Remove DTS Tracks" in dialog box from the Options>Setup menu (probably not a key factor). Set the "Work" and "Output" paths. Finally I clicked "Prepare", watched the progress, "Encode", watched the progress, "Rebuild", and watched the progress until it was finished. Finally I built an *.ISO from the output directory and burned it to a DVD-R disc using ImgBurn.

Thanks for the tips!

[blutach]

Good to see a positive outcome. DVD Rebuilder writes all new pointers, too in its rebuild phase.

Regards