eac3to - audio conversion tool - Page 620

gnol009 · 15th July 2013, 09:46

Anyone know how to creat qpfile.txt?

filler56789 · 15th July 2013, 16:27

Quote:

Originally Posted by gnol009

Anyone know how to creat qpfile.txt?

Looks like you have posted in the wrong forum AND in the wrong thread

http://forum.doom9.org/forumdisplay.php?f=77

jpsdr · 6th August 2013, 19:40

I have a little question...
If i do something like : "eac3to 00001.m2ts 3: c:\File.wavs"
Track 3 is DTS-HD MA, either 2.0, 5.1 or 7.1. I have the decoderdtsdll.dll installed.
Will the wave files be created only from the DTS core (so from lossy audio), or will they be created from the full DTS-HD MA information (the lossless audio) ?
Thanks.

rapscallion · 6th August 2013, 20:44

I Use a GUI with eac3to and do the same kind of extractions and always get the full lossless wavs.

Sparktank · 7th August 2013, 00:24

It will extract the core if you tell it to with "-core" switch.
Otherwise, if Arcsoft decoder registered, then it will extract the lossless DTS.

DoctorM · 7th August 2013, 05:40

I oddly find that when I'm decoding AC3 I have to force the switch -Nero. Yes, Nero 7 is properly installed, eac3to -test KNOWS it is installed (and says it works fine) and it seems to work properly when I add -Nero to my line. For some reason it doesn't seem to be the default decoder though.

Any thoughts on this?

nevcairiel · 7th August 2013, 07:10

Quote:

Originally Posted by DoctorM

I oddly find that when I'm decoding AC3 I have to force the switch -Nero. Yes, Nero 7 is properly installed, eac3to -test KNOWS it is installed (and says it works fine) and it seems to work properly when I add -Nero to my line. For some reason it doesn't seem to be the default decoder though.

Any thoughts on this?

The default decoder for AC3 is ffmpeg/libav, so that behaviour is expected (as documented in the first post in this thread)
I don't think the Nero decoder does a better job at it, so the default choice here makes sense, IMHO.

DoctorM · 7th August 2013, 16:57

Thank you. I misread that. Nero is best for AAC not AC3. In fact nothing is listed as 'best for ac3". I guess I just assumed.

Sparktank · 8th August 2013, 01:53

Quote:

Originally Posted by DoctorM

Thank you. I misread that. Nero is best for AAC not AC3. In fact nothing is listed as 'best for ac3". I guess I just assumed.

The Wikibooks says that Nero should offer better sound quality over libav/ffmpeg.

Quote:

As a result Nero7 is the default decoder for AC3 format.

Outdated since version 3.25...

Quote:

* libav is now the default decoder for AC3 and E-AC3

But shortly before release of version 3.26, someone asked about this and Madshi said there was a problem where Nero didn't always remove DRC for some files.

Quote:

Originally Posted by madshi

Quote:

Originally Posted by 88keyz

Curious, why the change from Nero to libav as the preferred DD decoder?

Because there were some problems with the Nero decoder. Mostly, disabling DRC didn't work for all tracks.

Overdrive80 · 8th August 2013, 12:00

Quote:

Originally Posted by Sparktank

The Wikibooks says that Nero should offer better sound quality over libav/ffmpeg.

Outdated since version 3.25...

But shortly before release of version 3.26, someone asked about this and Madshi said there was a problem where Nero didn't always remove DRC for some files.

Somebody users reports issues decoding ac3 files with nero decoder, mainly with multitracks files (5.1). For this reason, libav is decoder for default.

This Wikibooks is outdated.

Mark Regalo · 10th August 2013, 22:42

What files are used by eac3to from Nero to decode aac files? I have an old Nero 7 cd which I bought a long time ago yet I really don't want to install Nero on my computer.

Snowknight26 · 10th August 2013, 22:43

Then why do you want to use Nero to decode AAC?

Mark Regalo · 10th August 2013, 23:16

Quote:

Originally Posted by Snowknight26

Then why do you want to use Nero to decode AAC?

Isn't that what eac3to uses as the "best" method to decode aac? I just read what madshi wrote about eac3to in the OP.

Mark Regalo · 12th August 2013, 01:43

So, any idea on how to use Nero with eac3to without installing it?

Sparktank · 12th August 2013, 02:58

Quote:

Originally Posted by Mark Regalo

So, any idea on how to use Nero with eac3to without installing it?

There was a batch script created a long time ago that would do it for you.

Try a google search and limit to this forum only.

Code:

site:forum.doom9.org something something something eac3to

utenteanonimo64 · 15th August 2013, 14:40

Is there any software that can take the information created by eac3to in "chapters.txt" and apply it to a WAV/W64 file to split it into separate files with the appropriate WAV/W64 headers for each chapter?

Shevek · 15th August 2013, 15:15

Quote:

Originally Posted by utenteanonimo64

Is there any software that can take the information created by eac3to in "chapters.txt" and apply it to a WAV/W64 file to split it into separate files with the appropriate WAV/W64 headers for each chapter?

Perhaps Medieval CUE Splitter?

utenteanonimo64 · 15th August 2013, 18:38

Quote:

Originally Posted by Shevek

Perhaps Medieval CUE Splitter?

Thanks for the quick reply. I will have to look if there is an easy way to turn "chapters.txt" into a CUE format file...

kevmitch · 17th August 2013, 10:58

I noticed that decoding the same surround source file with the -downmix option produced different output files each time (the samples weren't the same). I'm pretty sure that this is because there is dithering which is randomly chosen. Sure enough, when I specify "-full" as suggested by madshi, the output is identical every time.

My question is how exactly is the random noise seeded/generated and why not just use a method (i.e., same seed) that produces identical results each time? I know it would put my mind at ease a little.

kevmitch · 17th August 2013, 11:52

While waiting to be able to post here for the first time, I posted over at avsvorums about a problem I noticed trying to decode the DTS HD MA sound from the Obilivion blu ray. In short, the center channel becomes distorted in loud bits. Since that posting, I have realised that specifying '-core' option to eac3to fixes the problem but of course its not "lossless", which my decode of the MA track clearly isn't either in this case.

I have uploaded a sample .dtshd file from 8:10-8:20 of the film which exhibits the problem. Also included with the sample are my eac3to decodes of the centre channel with and without "-core" as well as the libav decode, which also exhibits the distiortion. And of course all the logs and eac3to -test results.

I get the same results (bit-for-bit) using eac3to with the Arcsoft decoder versions 1.1.0.0, 1.1.0.7 and 1.1.0.8. I also hear the distortion when decoding the .dtshd directly in mplayer, vlc and audacity (which I think use the same code as libav anyway).

EDIT: On second thought, the distortion is there in core track as well. I don't know how I didn't hear that before.

6th August 2013, 20:44	#12384 \| Link
rapscallion NY Frame of Mind Join Date: Dec 2005 Location: L.I.,NY Posts: 586	I Use a GUI with eac3to and do the same kind of extractions and always get the full lossless wavs. __________________ "Talk to me Goose"

7th August 2013, 00:24	#12385 \| Link
Sparktank 47.952fps@71.928Hz Join Date: Mar 2011 Posts: 940	It will extract the core if you tell it to with "-core" switch. Otherwise, if Arcsoft decoder registered, then it will extract the lossless DTS. __________________ Win10 (x64) build 19041 NVIDIA GeForce GTX 1060 3GB (GP106) 3071MB/GDDR5 \| (r435_95-4) NTSC \| DVD: R1 \| BD: A AMD Ryzen 5 2600 @3.4GHz (6c/12th, I'm on AVX2 now!)

17th August 2013, 10:58	#12399 \| Link
kevmitch Registered User Join Date: Aug 2013 Posts: 15	-downmix and dithering. I noticed that decoding the same surround source file with the -downmix option produced different output files each time (the samples weren't the same). I'm pretty sure that this is because there is dithering which is randomly chosen. Sure enough, when I specify "-full" as suggested by madshi, the output is identical every time. My question is how exactly is the random noise seeded/generated and why not just use a method (i.e., same seed) that produces identical results each time? I know it would put my mind at ease a little.

17th August 2013, 11:52	#12400 \| Link
kevmitch Registered User Join Date: Aug 2013 Posts: 15	Oblivion: distorted center channel While waiting to be able to post here for the first time, I posted over at avsvorums about a problem I noticed trying to decode the DTS HD MA sound from the Obilivion blu ray. In short, the center channel becomes distorted in loud bits. Since that posting, I have realised that specifying '-core' option to eac3to fixes the problem but of course its not "lossless", which my decode of the MA track clearly isn't either in this case. I have uploaded a sample .dtshd file from 8:10-8:20 of the film which exhibits the problem. Also included with the sample are my eac3to decodes of the centre channel with and without "-core" as well as the libav decode, which also exhibits the distiortion. And of course all the logs and eac3to -test results. I get the same results (bit-for-bit) using eac3to with the Arcsoft decoder versions 1.1.0.0, 1.1.0.7 and 1.1.0.8. I also hear the distortion when decoding the .dtshd directly in mplayer, vlc and audacity (which I think use the same code as libav anyway). EDIT: On second thought, the distortion is there in core track as well. I don't know how I didn't hear that before. Last edited by kevmitch; 17th August 2013 at 16:49.

15th July 2013, 09:46	#12381 \| Link
gnol009 Registered User Join Date: Feb 2010 Posts: 11	Anyone know how to creat qpfile.txt?

6th August 2013, 19:40	#12383 \| Link
jpsdr Registered User Join Date: Oct 2002 Location: France Posts: 2,316	I have a little question... If i do something like : "eac3to 00001.m2ts 3: c:\File.wavs" Track 3 is DTS-HD MA, either 2.0, 5.1 or 7.1. I have the decoderdtsdll.dll installed. Will the wave files be created only from the DTS core (so from lossy audio), or will they be created from the full DTS-HD MA information (the lossless audio) ? Thanks.

7th August 2013, 05:40	#12386 \| Link
DoctorM Registered User Join Date: Sep 2005 Posts: 558	I oddly find that when I'm decoding AC3 I have to force the switch -Nero. Yes, Nero 7 is properly installed, eac3to -test KNOWS it is installed (and says it works fine) and it seems to work properly when I add -Nero to my line. For some reason it doesn't seem to be the default decoder though. Any thoughts on this?

7th August 2013, 16:57	#12388 \| Link
DoctorM Registered User Join Date: Sep 2005 Posts: 558	Thank you. I misread that. Nero is best for AAC not AC3. In fact nothing is listed as 'best for ac3". I guess I just assumed.

10th August 2013, 22:42	#12391 \| Link
Mark Regalo Registered User Join Date: Oct 2010 Posts: 24	What files are used by eac3to from Nero to decode aac files? I have an old Nero 7 cd which I bought a long time ago yet I really don't want to install Nero on my computer.

10th August 2013, 22:43	#12392 \| Link
Snowknight26 Registered User Join Date: Aug 2007 Posts: 1,430	Then why do you want to use Nero to decode AAC?

12th August 2013, 01:43	#12394 \| Link
Mark Regalo Registered User Join Date: Oct 2010 Posts: 24	So, any idea on how to use Nero with eac3to without installing it?

15th August 2013, 14:40	#12396 \| Link
utenteanonimo64 Registered User Join Date: Nov 2009 Posts: 15	Is there any software that can take the information created by eac3to in "chapters.txt" and apply it to a WAV/W64 file to split it into separate files with the appropriate WAV/W64 headers for each chapter?