How to edit DVD,DVD-VR, DVD+VR / How to convert DVDs back to MPG for reauthor or editing
If you have authored a DVD and you want to reedit or reauthor it without reconverting it again then just "convert" the DVD VOBs back to a MPG file or MPEG2, AC3, MPA, WAV elemantary streams(called demultiplexing) for easier editing and authoring. Some tools can also import DVD VOB files directly without converting to MPG files.
Link
http://www.videohelp.com/forum/viewtopic.php?t=224833
Tools used
DVD Decrypter, DVD-lab, DVD-lab PRO, ReJig, TMPGEnc DVD Author
Conversion
DVD to MPG DVD to AC3 DVD to MPV DVD to M2V DVD to DTS DVD to MPA DVD to MP2 DVD to DTS VOB to MPG
Sections
How to author a basic DVD
Other conversions, (S)VCD to MPG
How to cut/join/edit DVD,SVCD,XSVCD or CVD MPEG2
How to author other, VCD to DVD, SVCD to DVD
Other DVD Backup guides, DVD to HD, Subtitle