how does megui do audio thru neroencode?

[swage]

I'm trying to figure out how megui converts the audio stream to mp4 for ipod input. I'm just trying to batch encode a couple of movies I have directly to .mp4 and wanted to do it in a simplier fashion.
Does it demux with dgindex to wav, then uses neroenc? or does it dgindex to ac3 then to wav using besweet then to neroenc?
The command line strings seem to lack this info. It just says it goes from ac3 to .mp4

[Sharktooth]

megui uses avisynth for audio decoding (whatever the audio input is) then it passes the decoded audio stream to neroaacenc.

[aguy]

Does this mean that I can encode from DTS source as well if I have an avisynth DTS filter installed?

[Sharktooth]

you can encode from DTS even if you have a DTS DirectShow filter.
however you can feed the megui audio input with an avisynth script as well.