[tebasuna51]

Originally Posted by detmek

As far as I know. Nero AAC does support multichannel audio input and output.

Don't support 5.0.
If you want multichannel you can insert a empty LFE channel using this avs file:

a=NicAc3Source("C:\MeGUI Output\VTS_01_1 T80 3_2ch 448Kbps DELAY 0ms.ac3")
f=GetChannel(a, 1, 2)
c=GetChannel(a, 3)
l=GetChannel(a, 3).Amplify(0)
b=GetChannel(a, 4, 5)
MergeChannels(f, c, l, b)

And I have the same problem even if I set Downmix multichannel to stereo.

The (abbreviated) line in the script:
6<=Audiochannels(last)?x_stereo:last
only work for 6 or more channels, then MeGUI can't Downmix 5.0 to 2.0, but NicAc3Source can do it (Channels=2)

Btw. I tried with OGG without your script and it doesnt work eather.

Same problem than aac.
Use GetChannel(last,1,3,2,5,6,4) in previous avs if you want ogg multichannel output.

Edit: forget last question:

Bits per sample: 32 -Is this means that my audio is 32bit instead 16bit?

The NicAudio decoders output always 32 bits float to preserve the maximum accurate.
The lossy formats (mp3,ac3,dts,aac,ogg) don't have a bitdepth defined, the quality measure is the bitrate.

Edit 2: Because your edit:

Sorry. It works with OGG. I just forgot that I put old Lancer version in MeGUI tools folder.

Warning, If you have a 5.0 ogg file the channel map is wrong because
6==Audiochannels(last)?GetChannel(last,1,3,2,5,6,4):last
don't work, if you want a 5.0 ogg file you need:

a=NicAc3Source("C:\MeGUI Output\VTS_01_1 T80 3_2ch 448Kbps DELAY 0ms.ac3")
5==Audiochannels(last)?GetChannel(last,1,3,2,4,5):last