Timestamps in Joined VOB are not correct!

[bullet_proof]

Although I am relatively new to DVD authoring, I have read (and enjoyed) many of the guides on this site. Most of the techniques that I used, I found in one/more of them.

I am trying to make one joined movie out of clips from several other movies. I used the start/end feature of DVDShrink to extract the various pieces. Then I renamed the pieces (in sequence) and have used two different methods to join them together:
1) Allow DVD lab to join the VOBs on import
2) Use VOBEdit to join the streams
In both cases, the joined VOB (result) will “play” correctly but I don’t think that the timestamps internal to the VOB are correct. When I try to bring this VOB into DVD lab – to place chapter markers, the navigation is all wrong. The timeline displayed is not even sequential.

If I demux the streams (from either DVD lab) or VOBEdit, the audio (.ac3) has the correct length, but the video (.m2v) file produces is too short. I even demuxed the pieces and tried to assemble them demuxed, but the result audio file is always the correct size, but the m2v file is too short. This means when the two streams are re-assembled the video/audio is out of sync.

For example:
Clip 1 from Movie 1: 00:01 thru 03:00
Clip 2 from Movie 2: 05:00 thru 06:00
Clip 3 from Movie 3: 02:00 thru 02:30

Assembled in order 1,2,3

Leads to a timeline 00:01 thru 03:00, 05:00 thru 06:00, and 02:00 thru 02:30. The navigation is messed up because there are in effect two entries for 02:00.

I have searched this forum (and others) and I have not seen any discussions of timestamps internal to the VOB, but based on my experience – I must conclude that the VOB itself somehow knows the timestamp for each frame? How can I reset these values so that my joined VOB has one flow of time?

[hech54]

I am trying to make one joined movie out of clips from several other movies. I used the start/end feature of DVDShrink to extract the various pieces.

Taking the entire chapter in DVDShrink is HIGHLY recommended. I've heard from several people that taking anything else except a full chapter will give the results you mentioned.
I myself have had successes and failures taking material other than a full chapter in DVDShrink.