eac3to - audio conversion tool

[Motenai Yoda]

There is a way to do a speedup/slowdown with pitch correction?
Currently eac3to doesn't permit this...

[tebasuna51]

Originally Posted by Motenai Yoda

There is a way to do a speedup/slowdown with pitch correction?
Currently eac3to doesn't permit this...

You can try AviSynth-TimeStretch (BeHappy) or audio editors (Audacity or others).

Work fine for stereo audio but the are problems preserving the phase between channels with 5.1.

Or you can use TimeFactory for $499.00

[DoctorM]

BeSweet (probably related to BeHappy) can do the pitch correction. Use the Tempo setting at -4.096 to slow the audio without altering the pitch for PAL to NTSC, and +4.2709376043 for NTSC to PAL.
Sony SoundForge can do this to, but I believe it works in cents... and don't ask me what those numbers are.

[Thingol]

How can I convert 6.1 channels DTS to 5.1 AC3 properly? When I do this, AC3's file duration is getting longer.

[Motenai Yoda]

Originally Posted by DoctorM

BeSweet (probably related to BeHappy) can do the pitch correction. Use the Tempo setting at -4.096 to slow the audio without altering the pitch for PAL to NTSC, and +4.2709376043 for NTSC to PAL.
Sony SoundForge can do this to, but I believe it works in cents... and don't ask me what those numbers are.

BeSweet/BeHappy use Avisynth TimeStretch (based on SoundTouch) for speed change, while MeGui use SSRC to resample/speed and TimeStretch for pitch correction.

Also other sw for do this can be Audacity, Sox, mencoder (ffmpeg seems to have only atempo), ecc...

-4.096 and +4.2709376043 come out from 100*((24/1.001)/25)-100 and 100*(25/(24/1.001))-100

@tebasuna51 so no way neither to have an implementation in future?

[tebasuna51]

Originally Posted by Motenai Yoda

@tebasuna51 so no way neither to have an implementation in future?

madshi want the pitch change because it say than correct the previous change made with NTSC -> PAL conversion.

Maybe this is true with english tracks but not always with other languaje/translation.

BTW you can always 'pipe' eac3to output to sox.

[Nico8583]

I'm lost with Arcsoft 1.1.0.0 to 1.1.0.8 versions when I read posts from eac3to or LAV filter topics, or from differents sites
None of 1.1.0.0 to 1.1.0.8 versions can decode properly all types of streams (5.1, 6.0, 6.1, 7.1...) ?
I would like to simply convert DTS/DTS-HD to AC3 because one of my device doesn't support DTS decoding (but I don't know if it supports TrueHD AC3 core or if I must extract it)...

[Boulder]

AFAIK, the safest bet is to use v1.1.0.0. There are at least two different builds around, I think the CRC comparisons (and instructions which one to use) is buried somewhere in this thread.

[frumble]

It's this:

Originally Posted by TDiTP_

Yes, we need switch in this situation.
In case of non-standart scheme decoder 1.1.0.0 give garbage in some channels. So, i tried other two versions and they are decoded properly. If you have DTS-HD M.A.S. you can try yourself. If not, try decode test sample of DTS-HD 7.1 (scheme 2) and compare results.
AFAIK, there are only two differences between 1.1.0.0 and 1.1.0.8:
- 1.1.0.0 can decode DTS(-HD) 6.1/6.0 but can't decode non-standart 7.1
- 1.1.0.8 can't decode DTS(-HD) 6.1/6.0 but can decode non-standart 7.1
Both decode DTS(-HD) 1.0 correctly, unlike 1.1.0.7.

So there are different 1.1.0.0 builds?

[Nico8583]

I've searched CRC on the thread without result, if you have more informations about it I'm interested

Edit : I've found this link http://forum.doom9.org/showthread.ph...75#post1167775 but is 113 or 120 the best version to use ?

[tebasuna51]

I have this one:

dtsdecoderdll.dll version 1.1.0.0 (from the latest TMT build 120)
MD5 644aa3ade7742079533dcde2abf153e2

and work fine for me also decoding non-standard 7.1

[Nico8583]

Thanks it's what I have also

[sl1pkn07]

and about 1.1.0.9? have any problem?

[laserfan]

Originally Posted by sl1pkn07

and about 1.1.0.9? have any problem?

I wonder about this too--there are no comments on 1.1.0.9 anywhere here that I can find.

There is a new update to TMT, v6.6.1.190--has anyone installed it yet and what version of dtsdecoderdll.dll does it have?

[sl1pkn07]

TMT 6.6.1.190 is 1.1.0.9

the checkactivate.dll. not found in installation (still need?)

[tebasuna51]

checkactivate.dll is always needed for eac3to, you can use a old version.

[Bigmango]

Originally Posted by Nico8583

I'm lost with Arcsoft 1.1.0.0 to 1.1.0.8 versions when I read posts from eac3to or LAV filter topics, or from differents sites
None of 1.1.0.0 to 1.1.0.8 versions can decode properly all types of streams (5.1, 6.0, 6.1, 7.1...) ?

This is a problem with eac3to.

Makemkv doesn't have this problem.

This is what the makemkv developper has to say about this:

This statement is not correct for MakeMKV. I have to dig into details what dtsdecoderdll.dll really is. It is a reference DTS decoder library (written by DTS) with an API layer on top of it (written by Chinese developers). So, all versions of dtsdecoderdll, from 1.0.0.0 to 1.0.0.8 have exactly the same reference decoder library linked in - "VERSION=325,REVISION=27" . The only difference is a Chinese crap on top. Unlike eac3to and others, MakeMKV uses the reference decoder directly as stated on /dtshd/ . All other software, including eac3to, use the Chinese API. Any version of dtsdecoderdll.dll will work equally fine with MakeMKV, even early 1.0.0.0 variant. MakeMKV decodes proper channel layouts for all possible configurations (that one can create with DTS HD master audio suite). I encourage you to check MakeMKV log file - it lists the DTS decoder version, DTS channel layout and output channel mask.

The tests I have done also seem to confirm what he says. The FLAC audio produced by Makemkv doesn't have the channel mapping and audio corruption issues depending on the dtsdecoderdll.dll versions.

So, if you want to make sure you are having a perfect DTS-HD to flac converstion as done by the reference DTS decoder, without needing to worry about the decoder dll version, process your MKV or bluray/iso with Makemkv.

(if you want maximum flac compression with Makemkv set it to 12 in flac.mmcp.xml).

edit: also, with makemkv you only need to copy the "dtsdecoderdll.dll" to the program directory. It doesn't need the other files and doesn't need the checkactivate, etc... no need to register the dll as it reads the DTS decoder contained within the file directly.

[DoctorM]

Thanks for the info Bigmango. It makes it pretty clear that Eac3to has a new goal in its next update: to make DTS decoding work right since we know it can be done.

[filler56789]

Another big to Bigmango,

BTW, that useful info was originally written @

http://makemkv.com/forum2/viewtopic....&t=7201#p30255

[tebasuna51]

Originally Posted by Bigmango

This is a problem with eac3to.

Makemkv doesn't have this problem.
...
So, if you want to make sure you are having a perfect DTS-HD to flac converstion as done by the reference DTS decoder, without needing to worry about the decoder dll version, process your MKV or bluray/iso with Makemkv...

Thanks to show us a new method to decode DTS-HD.

BTW let me say than the conversion of DTS-HD 7.1 strange setup is not perfect because the channels Ls-Rs from DTS are converted to SL-SR channels in flac/wavex, when the channels SL-SR are the DTS channels Lss-Rss from the standard 7.1 setup.