Transcoding AC3 5.1 to AAC 5.1: either -d 3/2 or -d 2/0?

[numaios]

Hello!

I've been doing search and reading guides/FAQs and BeSweet Commandline Reference about transcoding AC3 5.1 to AAC 5.1 with BeSweetGUI and OagMachine and I don't understand one thing.

I get this command line with AAC 5.1 preset in BeSweetGUI:
-azid( -c normal --maximize ) -bsn( -6chnew ) -ssrc( --rate 44100 ) -profile( DSPguru_MP4_(AAC)_6ch )

My question is: if AZID's default is -d 2/0, we are downmixing to stereo with that command line (DPL compatible, since the default -s value is -s dpl, but still stereo). Shouldn't we use -d 3/2 instead?

With BeLight:
-azid( -c normal ) -dimzon( -dllname bse_Nero7WA.dll -6chnew -vbr_streaming -codecquality_high -aacprofile_he ) -ota( -g max )
Again the same doubt (no "-d" setting).

With OagMachine:
-ota( -norm 1 ) -boost( /b=2db ) -bsn( -6chnew ) -profile( The OagMachine v0.11 )
No AZID settings at all :confused:

Thanks in advance.

[Kurtnoise]

Why would you downmixed ? It's not needed in your case. That's why -d parameter is not setted.

[numaios]

Why would you downmix ? It's not needed in your case. That's why -d parameter is not setted.If -d parameter is not set, it uses its default, which is -d 2/0, as far as I know, isn't it?

[Kurtnoise]

no, azid.dll is different to the azid command line...

[tebasuna51]

If -d parameter is not set, it uses its default, which is -d 2/0, as far as I know, isn't it?
It's true for azid.exe but not with BeSweet-Azid.dll.

And forget BeSweetGUI and OagMachine for transcode to aac because are outdated. Use BeLight (last revision) or BeHappy with the free NeroAacEncoder instead Nero 6/7 dll's.

[numaios]

:thanks:

no, azid.dll is different to the azid command line...It's true for azid.exe but not with BeSweet-Azid.dll.Oooh... I see. Another "xxxx.exe Vs. xxxx.dll+BeSweet" difference... Then what -d setting is used by default when encoding to AAC 5.1? -d 3/2?

with the free NeroAacEncoder instead Nero 6/7 dll's.Now you talk about this... in dll's, you can choose between codecquality high or fast. But in the free NeroAACEncoder, that option doesn't exist. Is "high quality" used by default?

ADDED: Is switch -bsn the same as -dimzon?

[tebasuna51]

Then what -d setting is used by default when encoding to AAC 5.1? -d 3/2?
The azid.dll channels output is the same than input if the parameter -s dplii/dpli/stereo/mono is not present.
But in the free NeroAACEncoder, that option doesn't exist. Is "high quality" used by default?
You can see the Ivan Dimkovic (Nero team) opinion in this post (and full thread):
http://forum.doom9.org/showthread.php?p=823499#post823499
Is switch -bsn the same as -dimzon?
Is not the same but can do similar job depending of encoders.

[shon3i]

Now you talk about this... in dll's, you can choose between codecquality high or fast. But in the free NeroAACEncoder, that option doesn't exist. Is "high quality" used by default?Codec quality option only exist in older nero 6/7 aac encoders, and that encoder is fully bad for 5.1 encoding, so don't even use it. Free Nero AAC encoder don't have quality option and who know's what mode is used, this only developers know's, free nero have good multichannel encoding but far so good, Coding Technologies for me have excelent quality in multichannel encoding, and that is my opinion. You should make some little test and compare 5.1 Nero and 5.1 CT, and you will see that differents.

PS. Why you use besweet for processing, because BeHappy have same downmix options, and better compactibility with lastest encoders

[numaios]

:thanks: guys!

You can see the Ivan Dimkovic (Nero team) opinion in this post (and full thread):
http://forum.doom9.org/showthread.ph...499#post823499Very interesting post, I understand that the highest possible quality mode is used.

You should make some little test and compare 5.1 Nero and 5.1 CTAll right, I will.

Why you use besweet for processing, because BeHappy have same downmix options, and better compactibility with lastest encodersActually I was not planning to use BeSweet to do that, I just was trying to see how does it handle AZID options.