Converting LPCM audio to AC3 on a DVD backup

[our-kid]

Hello

I am attempting to replace LPCM audio with AC3 before shrinking a DVD in oder to improve the quality of the video

I am attempting to follow the guide as detailed here

https://www.videohelp.com/forum/viewtopic.php?t=234240

however have come across a few problems

I am very new to all this so apologies if the answers to my questions are obvious


I have attempted to follow the above guide however have got stuck at Step 2

I have ripped the DVD to my hard drive using DVD decrypter however when attempting to select the VOB files to Demux using VobEdit I become a little stuck

The DVD itself is made up of 3 episodes and contains a lot of VOB files

VTS_01_0, VTS_01_1
VTS_02_0, VTS_02_1, VTS_02_2, VTS_02_3
VTS_03_0, VTS_03_1, VTS_03_2, VTS_03_3
VTS_04_0, VTS_04_1, VTS_04_2, VTS_04_3
VTS_05_0, VTS_05_1

I am not really sure how to select the VOB files I need. I can select for instance VTS_02_1 which will then start to play the beginning of episode 1 where as VTS_02_02 will play the second part of episode 1 etc

Do i need to Demux all these vobs as they contain sound or is there one vob file that should cover the whole disc? What about the menu if that contains sound?

Any advice you can give would be appreciated

Thanks

[jimmalenko]

Any menus will be in the VTS_xx_0.VOB file(s). So you can demux them to get the menu audio.

From looking at the file layout I'd suggest that VTS_02 is Ep 1, VTS_03 is Ep 2 and VTS_04 is Ep 3. So you should be able to just demux each VTS in turn. IIRC there's a tickbox in VOBEdit's demux options which says something like "demux complete titleset", which should then continue on with VTS_02_2.VOB and VTS_02_3.VOB in turn.