DVD frames A <--> B + C <--> D ---> AVI

[Snippit]

Hello.

After having looked through the forum, the FAQs, the off-sites posted and some other sources as well, I feel I'm drowning in information which, I believe, isn't related to my problem.

Problem:

Encode certain ranges of a DVD-movie. For example frames A through B and then frames C through D and as a finishing touch append them to each other so as to create one AVI.

Well, I've accomplished that by adding Trim(A,B) ++ Trim(C,D) to the script created by GKnot (preceeded by mpeg2source("dvdcontent.d2v") of course).

My problem is that I'd also like the audio corresponding to the two ranges synch'd in the final AVI-file.

I've used Gordian Knot (DVD2AVI) to create a .d2v file and then loaded the project file using GKnot. Resized, set file size, edited the .avs script with the trim ranges I wanted and sent the whole shebang to the encoder application which produced the desired result apart from the audio. The audio starts off from frame 0. Haven't tried loading the script manually using VDub as I assume that would make no difference.

Request:

I would like someone nice (by default) to tell me how to solve the problem. Either by flat out telling me or pointing me to the info or, as a last resort, give me a few hints (hints are good when you want to understand things on a deeper level).

Another thing I'd like to learn (which, I guess, is basically the same as the problem described above) is how to do the following but using a DVD source instead and getting the audio synch'd. (got it to work with an avi as source as shown below)
fadeout(fadein(trim(avisource("clip1.avi"),1200,1300),75),75) ++ fadeout(fadein(trim(avisource("clip2.avi"),500,600),75),75)

Any help would be much appreciated and I hope the above made sense.

Cheers,
Snippit

[Mug Funky]

i'm not familiar with Gknot, but it's a simple matter to load an ac3 into avisynth and "attach" it to a video clip.

that way when you cut the clip, the audio will cut as well.

matters become more difficult if you want to retain the ac3 stream - then it'd be better to make your cuts in virtualdubMod, and set it to ac3 frame editing mode, then compress the file out of virtualdub.

[Asmodian]

Is uncompressing the audio to PCM and using wavsource() not an option? If it is multi-channel audio I believe you could use besweet to convert it to 6 mono wav files which can then be imported into avisynth (but I forgot the exact syntax, look in the avisynth docs).

EDIT: If what Mud Funky suggested didn't work for you.