How to compress just the sound from ISO?

[ijuf]

I've researched and tried many ways for ages now which I'm trying to compress just the sound from ISO," and I always get some problems.

Is there a good way to do this? I want to keep the original menus and the video quality(note: it's an ISO which i'm trying to back up my DVDs), but want to make sound file smaller so it'll fit on 1 DVD-r.
i would really appreciate it if anyone who's expert at this can help. thanx in advance.

[teegee420]

I could be wrong here but I'm pretty sure you'll have to re-author the entire DVD. That involves demultiplexing the audio and video, recompressing the audio and then authoring the old video with the new audio. It would probably be much easier if you just mount the ISO to a virtual drive with Daemon Tools and use DVD Shrink to shrink to DVDR size.

[ijuf]

i pretty much know how to use dvdshrink, instant copy, etc.
but these prog compresses the VIDEO also.
i just want to compress the AUDIO, and have menus and stuff the way it is.
any better suggestions anyone?

thanx teegee420 anyways for your help

[Capmaster]

i pretty much know how to use dvdshrink, instant copy, etc.
but these prog compresses the VIDEO also.
i just want to compress the AUDIO, and have menus and stuff the way it is.
any better suggestions anyone?

thanx teegee420 anyways for your help

I think you'd be disappointed to see how little difference all that work would make. The audio is so small compared to the video size, and the slight bitrate difference between the two that you'd gain for using for the video .......I doubt you'd ever notice.

You're better off just compressing the whole thing down. Use DVDShrink.

[ijuf]

i understand it wouldn't make much of a difference, but just want to learn how to do it. is there a link or something?
i'm pretty sure it only takes a few steps and a few program?
this will be my last time to ask. sorry for asking so many times.