Help with code to demultiplex a VOB

[trossin]

Does anyone know of source code or instructions on how to write code to demultiplex a VOB to get the .m2v and .ac3 (or .mp2) streams. I currently use TMPGen to do this but would like a command line or automatic tool to do the job. The goal being a way to reauthor a DVD using dvdauthor without lots of little manual steps.

Also, to join VOBs is it simply a matter of putting the VOBs end to end like using the Unix cat command? I currently have to join VOBs by writing a DVD then using DVDdecrypter with the merge VOB command to get one large VOB.

My process currently:

• 1. Use Dvdshrink to create a menuless back to back disk of movies or extras
  2. Write the folder to a DVD+RW
  3. Use DVDdecrypter with the merge VOB feature turned on to extract each movie or extra into it's own VOB
  4. Use TMPGen to demultiplex the VOBs into .mv2 and .ac3 files
  5. use mplex -f 8 to recombine the .mv2 and .ac3 files to get timestamps and to get into a format that dvdauthor likes
  6. create a XML file for dvdauthor and create menus and run dvdauthor
  7. Burn the disk and enjoy

I believe that I could write a tool to get rid of steps 2,3 and 4 if I just knew some secrets. Please help.

Thanks

[Abnormal]

Hi,
How about Vstrip http://www.maven.de/code/
It demux's streams and the source code is avalible

Abnormal

[Ufit]

As far as I know www.doom9.org has a lot of source codes.
Try source for DVDtoAVI i.e. MPEG2Dec3v110_src
It allows u to open a complete VOB project.

[trossin]

Thanks Ufit,

I found bbTools 1.9 at www.doom9.org. It is exactly what I was looking for. Simple command line tool with easy to compile source that demuxes video so that I can dump it into mplex and then into dvdauthor.

Ted.

[SaSi]

2. Write the folder to a DVD+RW
3. Use DVDdecrypter with the merge VOB feature turned on to extract each movie or extra into it's own VOB
4. Use TMPGen to demultiplex the VOBs into .mv2 and .ac3 files

A way to replace steps 2,3 & 4 is to use the output from DVDShrink (as written to a folder) with SmartRipper. SmartRipper can open folders rather than disks. You can also select to operate in file mode and enable stream processing. This mode results in demuxed elementary streams. There is an option on file splitting, which can be set for "Do not split files", giving you a single m2v or ac3 file out of every video title.