Authoring a DVD with updated audio files

[Turbo Sensonic]

I have a music DVD which has been transferred from VHS to DVD.
The audio track contains a lot of hiss.

OK, I demuxed the DVD (PGC Demux), converted audio track from AC3 to WAV (AC3Tool), did some noise reduction with Cool Edit Pro, converted WAV back to AC3 (ffmpeggui).

I created two audio files with different noise reduction levels, i.e. the one with less noise reduction (and thus more hiss or course), the other with more noise reduction but of course, less treble. The original DVD has only one audio track and no menus at all. So I'm trying to create menus for that DVD as well.

Now when I'm trying to author a new DVD (with GUI for DVDAuthor) with those two audio tracks I created, I get all kind of error announciations about framerates and streams of audiofiles. OK, I tried all kind of muxing programs but every time it's the same thing.

If I'm trying to create a DVD with only one audio track (either of those two), everything works out perfectly but if I'm putting two audio tracks, I get error announciations.

OK, with rejig (the only program that worked) I could create a DVD with two audio tracks but without any menus. So I tried Vobblanker to replace a VOB -file, i.e. the get the VOB file created by rejig into the DVD created with GUI for DVDAuthor (with menu and only one audio track). Didn't work, Vobblanker announces about audio files "stream ID=1 not accepted" and the result is the DVD with only one audio track.

I also tried ReStream to restream those AC3 files. Didn't work

So my questions are:

1) is the amount of audio files "hardcoded" somehow into m2v file? So I cannot put two audio tracks into a DVD which has originally had only one audio track? Should I restream m2v file?

2) if the answer for the question 1) is "no", how could I fit those two audio tracks into a DVD?

I'd really appreciate if someone could help me with this matter. Thx in advance!

[guns1inger]

Assuming the AC3 tracks are compliant, DLP should have no problems authoring a disc. There is a 30 day demo version available. DLP will author up to 8 audio tracks, including DTS if you so wish.

The video stream is completely unaware of the audio, so there is no restriction on changing or adding tracks coming from that front. Your problems must coming from elsewhere. It might be worth scanning your new AC3 track with AC3fix, just to be sure.

[Alex_ander]

TDA2 or TDA3 will also do that and generate an editable menu with audio selection page (or buttons for audio selection on the same page, TDA3 only).
Reauthoring is almost inevitable (at least much more simple) here, maybe you had error message from VobBlanker since it (mainly) works with VOB content and audio stream properties data (changed by addition the second audio) is registered in ifo's. New audio stream needs navigation adjustment to get referenced to.