eac3to - audio conversion tool

[IbrahimKh]

Originally Posted by tebasuna51

There are something wrong in this ac3 file, maybe a mix of 2.0 and 5.1 frames.

An ac3 2.0, 48 KHz, 56m 9s decoded to wav 64 bits have a size:

3369 s * 48000 * 64 * 2 / 8 = 2587392000 bytes = 2.4 GB

but eac3to say:

Caution: The WAV file is bigger than 4GB. <WARNING>

Use DelayCut to fix the ac3 and put here the log.

Yes it's mix of 2.0 and 5.1
thanks for reply

[stax76]

Is my list incomplete?

AC3
AC3 EX
AC3 Surround
DTS
DTS Express
DTS Hi-Res
DTS Master Audio
DTS-ES
E-AC3
E-AC3 Surround
RAW/PCM
TrueHD/AC3
TrueHD/AC3 (Atmos)

1: Chapters, 16 chapters
2: h264/AVC, 1080p24 /1.001 (16:9)
3: DTS Master Audio, English, 5.1 channels, 16 bits, 48kHz
(core: DTS, 5.1 channels, 1509kbps, 48kHz)
4: DTS, English, 2.0 channels, 768kbps, 48kHz

[tebasuna51]

Originally Posted by stax76

Is my list incomplete?

Nope, if is a list of audio from BD's.

But eac3to can decode other audio formats MP1, MP2, MP3, FLAC, MLP, AAC (with Nero 7 installed)...

[MonoS]

Hi, some times, when i try to convert some audio tracks, lossless and lossy, to ac3 i get distorted and inaudible audio.

The problem appear randomly and re-executing the conversion fix the problem without changing anything and, if this doesn't seems to work, executing the conversion on the single audio tracks seems to fix for good.
The only thing i'm sure about the state of the pc is that it's always under heavy load when it happens [4 cores at 100%], other recurring thing are that this happens mostly demuxing blurays or converting massively multiple tracks.

This is the sample of the result, it happens randomly so i can't offer a source sample: https://mega.nz/#!OlIDVRQZ!hKwCU-3Qo...gH1nVOMrGf1GK8

Thanks a lot for the attention, if i can provide further information let me know

[stax76]

Originally Posted by tebasuna51

Nope, if is a list of audio from BD's.

But eac3to can decode other audio formats MP1, MP2, MP3, FLAC, MLP, AAC (with Nero 7 installed)...

I have two lists with formats defined in StaxRip's source code regarding eac3to, BD codecs as posted and supported input file extensions:

ac3
dts
dtshd
dtshr
dtsma
eac3
evo
flac
m2ts
mlp
mp2
mpa
pcm
raw
thd
thd+ac3
ts
vob
wav

It's somehow important that my BD codecs list is complete because for a unknown codec StaxRip will:

throw a unhandled exception

prompt the user to send the log file

terminate

It happened last week for 'E-AC3 Surround', that's why I ask.

[tebasuna51]

Originally Posted by stax76

...supported input file extensions:

You can add: mkv, mpls, mp1, mp3, w64 and rf64

It happened last week for 'E-AC3 Surround', that's why I ask.

I never see a E-AC3 Surround and don't know if can be a problem for eac3to.

BTW I can talk you about 'AC3 Surround':

eac3to show the qualifier 'Surround' based in a flag in AC3 header than say the user: this stereo audio have surround channels encoded in DPL style.

When a player, with DPL decoder inside, see that flag can do the extraction of surround channels.

But eac3to do nothing with that info and decode the AC3 like 2.0 because don't have a DPL decoder inside.

I only can supose than eac3to try to decode 'E-AC3 Surround' only like 2.0 ignoring the 'Surround' qualifier like with 'AC3 Surround'

[tebasuna51]

Originally Posted by MonoS

Hi, some times, when i try to convert some audio tracks, lossless and lossy, to ac3 i get distorted and inaudible audio.

Yes, your output is usseless and I have the same problem sometimes.

And don't know for what that happen.

[stax76]

@tebasuna51

Thanks for the info.

[junior_l3oss]

Originally Posted by heerschop

I use Eac3to with nero without installing nero.
Eac3to only needs a couple files and registry settings
Nero Files:
- AdvrCntr2.dll
- NeAudio2.ax
- NeEacDec.dll

Copy these files in a folder of your choice. I have copied them to my eac3to folder.
Use the following command lines to register the dll's.
regsvr32.exe C:\tools\eac3to\Nero\NeAudio2.ax
regsvr32.exe C:\tools\eac3to\Nero\AdvrCntr2.dll

The following registry keys have to be added to the registry to register the nero plugin.

[HKEY_LOCAL_MACHINE\SOFTWARE\Ahead\Installation\Families\Nero 7\Info]
etc.

[HKEY_LOCAL_MACHINE\SOFTWARE\Ahead\Installation\Families\Plugins\Info]
etc.

That all you need to use the nero plugin with eac3to

i tried but i cant detect nero audio decoder.
i installed nero 7 too but not working. i tried to edit regedit...
and again i install nero 7 but there isnt neaudio2.ax
i found torrent files include it but not worked again.
my system is win 7 64bit

[filler56789]

Originally Posted by junior_l3oss

i tried but i cant detect nero audio decoder.
i installed nero 7 too but not working. i tried to edit regedit...
and again i install nero 7 but there isnt neaudio2.ax

<snip>

Does this work for you?

http://forum.doom9.org/showthread.ph...14#post1398214

[tebasuna51]

I have Nero-7.11.10.0_europe_lite installed in W7 64 bits, and the registry keys:

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Ahead\Installation\Families\Nero 7\Info]
etc.

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Ahead\Installation\Families\Plugins\Info]
etc.

BTW the Nero7 decoder is only needed now by eac3to to decode AAC standalone files, and you have other tools to do that job: qaac, ffmpeg, faad...

If the AAC is in mkv container you can use eac3to to extract the .aac

[Music Fan]

Originally Posted by tebasuna51

If the AAC is in mkv container you can use eac3to to extract the .aac

Is the result different than when done with MKVExtract ?

[tebasuna51]

Originally Posted by Music Fan

Is the result different than when done with MKVExtract ?

Is the same, in my tests.

[Music Fan]

Ok thanks.

[Ripman]

I downloaded 352.8khz wav files from HDtracks. I wanted to convert the wavs to 176400 so I can listen on my laptop also.

HDtracks uses a custom field in their wav files to store artwork. This field can sometimes contain many MBs of data.

I used the following command line. It all seems to work nicely. But each converted track has some pretty evil static at the very end.

Eac3to 352.wav 176.wav -resampleTo176400 -0.1dB

What should I change on the command line to get my down sampling to work properly?

[manolito]

Sorry if this has been asked before, I use eac3to only occasionally...

I need to normalize a clip, but not to 0dB, but to a lower value like -2dB or 97%. Is this possible with eac3to? The Wiki only mentions the -normalize parameter which normalizes to 0dB.


Cheers
manolito

[Overdrive80]

You could use -normalize for seeing ganancy that eac3to applies and after you can use +-0.0db parameters, are two passes.

[manolito]

Sorry this will not do it for me...
I use this audio conversion in StaxRip, everything should be automatic without any user intervention.

Mostly I will convert AAC audio to AC3 audio. When converting to a lossy compressed format it is never a good idea to normalize to 0dB, I mostly leave a headroom of 2dB.

The problem is that StaxRip cannot use BeSweet for AC3 audio as the target format (this would enable normalizing to arbitrary values), it only can use eac3to.


Cheers
manolito

[tebasuna51]

Originally Posted by Ripman

I downloaded 352.8khz wav files from HDtracks...

Nobody can help you because the forum rule 6 :

6) No warez, cracks, serials or illegally obtained copyrighted content! Links to content of a questionable nature (e.g. anything you don't own and/or have downloaded), asking for, offering, or asking for help/helping to process such content in any way or form is not tolerated.

Please read the forum rules.

[tebasuna51]

Originally Posted by manolito

Sorry this will not do it for me...
I use this audio conversion in StaxRip, everything should be automatic without any user intervention...

Then we can't help you with that.

Ask in StaxRip thread or use MeGUI (or BeHappy) than allow this operation.