Problems to merge Vobs files

[roglopes]

Dear frends.
I already try to do this job any times but I'm not socceeding.
I've a DVD movie that has 4 tracks with AC3 sound.
I want to convert these 4 Vobs to only 1 MPEG2 file (merge/join the 4 files into 1).
The total length of the movie (joining the 4 files) is 2 hour and 16 minutes.
When I merge the files using TMPEG and I played in media player, It shows that the videos has only 49 minutes but If I forward to the final of the movie the movie shows complete.
I read meny tutorials in VCDHelp site but the MPEG files continue with problem
What I have to do merge all the Vob files to 1 MPEG2 to auhor a new DVD?
Thanks and sorry about my bad english

[petar]

Rewrite the timecode of the MPEG stream (with Restream or DVD-Lab, for example) after merging.