eac3to - audio conversion tool - Page 4

Neo Fagin · 21st May 2007, 10:36

Retrying now, I'll let you know if it works or not.

Neo Fagin · 21st May 2007, 10:58

Seems to work now.

May as well ask for a "feature" so to speak - since this tool writes raw/wav files to disk as intermediates to the process, would it be possible to make this tool capable of doing two transcodes at once if given the option - ac3 and flac on the same command line? Saves having to run it twice since the raw/wav files are already created on disk for either process individually.

madshi · 21st May 2007, 11:08

Quote:

Originally Posted by Neo Fagin

Seems to work now.

So you have valid 5.1 now? Or were you able to get 7.1?

Quote:

Originally Posted by Neo Fagin

May as well ask for a "feature" so to speak - since this tool writes raw/wav files to disk as intermediates to the process, would it be possible to make this tool capable of doing two transcodes at once if given the option - ac3 and flac on the same command line? Saves having to run it twice since the raw/wav files are already created on disk for either process individually.

That's kind of difficult. The main problem is that for ac3 encoding eac3to keeps using 24bit (cause it's no disadvantage for final file size), while for flac recording the TrueHD track is converted to 16bit. So the raw files already differ.

Neo Fagin · 21st May 2007, 11:22

Quote:

Originally Posted by madshi

So you have valid 5.1 now? Or were you able to get 7.1?

Not sure. All I know is before, it wrote a 3.5gb raw file and failed on the sox step, this time it wrote a 6.5gb raw file and is now in the middle of the wav transcode step. It's taking an immensely long time due to the size of the files involved. In this instance I'm doing ac3 so it'd only be 5.1 results. I'll make a flac track afterwards and see how it goes.

Quote:

That's kind of difficult. The main problem is that for ac3 encoding eac3to keeps using 24bit (cause it's no disadvantage for final file size), while for flac recording the TrueHD track is converted to 16bit. So the raw files already differ.

Ah. No worries, just figured it'd be a big time-saver.

madshi · 21st May 2007, 11:53

Quote:

Originally Posted by Neo Fagin

Not sure. All I know is before, it wrote a 3.5gb raw file and failed on the sox step, this time it wrote a 6.5gb raw file and is now in the middle of the wav transcode step. It's taking an immensely long time due to the size of the files involved. In this instance I'm doing ac3 so it'd only be 5.1 results.

Well, you could feed sox any data, e.g. an "exe" file and it would still be happy. So that sox and ac3 encoding runs through is not yet a proof of that everything is fine. If the raw file contains 8 channels, but eac3to thinks it's 6 channels, the output will be "interesting". But let's just wait and see...

Neo Fagin · 21st May 2007, 13:08

The output appears to be okay 5.1 AC3. I haven't loaded it into Vegas or the like to do a comparison with ac3 made from the eac3 via sonic, though, but during playback the channels all appear to be in the right spots etc.

Could it be possible to do the flac/ac3 at once transcode thing if the -keep24 switch is used, thusly both flac and ac3 would logically use the same 24-bit raw file? Flac's primarily an archival medium in this instance so filesize isn't a terrible concern. If not, no big deal, just the thought occured to me. I suspect it's maybe a half-dozen lines of code to implement at any rate.

zgx · 21st May 2007, 13:08

Quote:

Originally Posted by Neo Fagin

Not sure. All I know is before, it wrote a 3.5gb raw file and failed on the sox step, this time it wrote a 6.5gb raw file and is now in the middle of the wav transcode step. It's taking an immensely long time due to the size of the files involved. In this instance I'm doing ac3 so it'd only be 5.1 results. I'll make a flac track afterwards and see how it goes.
Ah. No worries, just figured it'd be a big time-saver.

If you make a FLAC track first then run:

flac -d yourflacfile.flac
aften -whateveroptions yourwavfile.wav

But as Madshi pointed out for FLAC files the PCM is converted to 16 bit first. But since most TrueHD tracks seams to use 16 bit source material it shouldn't really matter that much. The AC3 file will probably sound just the same.

madshi · 21st May 2007, 13:24

Quote:

Originally Posted by Neo Fagin

Could it be possible to do the flac/ac3 at once transcode thing if the -keep24 switch is used, thusly both flac and ac3 would logically use the same 24-bit raw file?

In that case you can do a simple batch file like this:

eac3to some.evo some.wav -keep24
eac3to some.wav some.flac
eac3to some.wav some.ac3

That's as fast as you can get. If eac3to did this for you internally, it wouldn't be any faster.

Quote:

Originally Posted by zgx

since most TrueHD tracks seams to use 16 bit source material it shouldn't really matter that much. The AC3 file will probably sound just the same.

Well, if only true TrueHD decoder output was really 16bit when being fed a 16bit TrueHD track...

I've just contacted Nero support about this problem. Hopefully they'll send me a useful reply.

ACrowley · 21st May 2007, 13:40

mhh strange

When i want to type in the Nero HDDVD/BluRay Plugin Serial, Nero tells me i have to upgrade to newest Version first.

i use the lstest Version....?

zgx · 21st May 2007, 13:40

Quote:

Originally Posted by madshi

I've just contacted Nero support about this problem. Hopefully they'll send me a useful reply.

Yes lets hope they fix it would be awsome to get a bit perfect decode.

madshi · 21st May 2007, 14:41

Quote:

Originally Posted by ACrowley

mhh strange

When i want to type in the Nero HDDVD/BluRay Plugin Serial, Nero tells me i have to upgrade to newest Version first.

i use the lstest Version....?

That's quite strange. Which version do you have? You should probably contact Nero support.

序列人 · 21st May 2007, 16:55

Quote:

Originally Posted by ACrowley

mhh strange

When i want to type in the Nero HDDVD/BluRay Plugin Serial, Nero tells me i have to upgrade to newest Version first.

i use the lstest Version....?

me to...
my ver. is Nero7.Premium.Reloaded.v.7.5.9.1.MULTiLANGUAGE...

madshi · 21st May 2007, 17:05

As far as I can see the latest version is 7.8.5.0.

Darth Pinous · 21st May 2007, 17:12

This means that the serial is wrong, nothing to do with a version problem. If you buy the plug-in from the Nero website, you will see that the serial they will give you is waaay different from the one you're trying to use...

Just tested Nero plugin to convert Matrix Reloaded Dolby TrueHD track into Wavpack lossless track. Man, what a killer audio track !

I tried first to convert the WAV file to 16 bits with WaveWizard before converting it to Wavpack, then to convert directly the 24bit WAV file to Wavpack.

The 16bits Wavpack was 1,43 GB (which make a 1,5 Mbps average bitrate, quite dynamic movie !) while the 24bits Wavpack was 2,9 GB (I use option -h for Wavpack reencodes).

Despite the huge size difference, I couldn't hear any differences between the two audio tracks. So, not sure that there is one.

Does anyone know how to mux an elementary audio track (let's say a demuxed Dolby TrueHD track) in an EVO container or could anyone point me to a guide explaining how to do it ?

zgx · 21st May 2007, 18:30

Quote:

Originally Posted by Darth Pinous

Does anyone know how to mux an elementary audio track (let's say a demuxed Dolby TrueHD track) in an EVO container or could anyone point me to a guide explaining how to do it ?

"Sonic Scenarist Advanced Content" would be my best bet.

orbitlee · 22nd May 2007, 04:33

Guys, don't bother madshi with the trouble by pirated nero keygen.

madshi, great work. I managed to build the filter chain in graphedit for TrueHD. Looks like it's time to consider the truehd source file :-)

BTW, I got a sample of m2ts with TrueHD audio track(from Blu-ray Nine Inch Nails), unfortunately nero splitter does not split it correctly(only ac3 audio track, no truehd).

madshi · 22nd May 2007, 08:03

Quote:

Originally Posted by orbitlee

Guys, don't bother madshi with the trouble by pirated nero keygen.

Thanks!

Quote:

Originally Posted by orbitlee

madshi, great work. I managed to build the filter chain in graphedit for TrueHD. Looks like it's time to consider the truehd source file :-)

That would be very nice!!

Rectal Prolapse · 22nd May 2007, 16:58

orbitlee: Confirmed. I couldn't get the NIN Blu-ray working with Nero either. No TrueHD track to select.

Borbus · 22nd May 2007, 17:07

I'm using this with the Sonic Audio Decoder. I have the decoder set to environment quiet. I've tried converting eac3 to wav. I have the soundtrack in eac3 and ac3 from a DVD. Comparing eac3 decoded with this to ac3 decoded with foobar2000 this seems to be obviously dynamically compressed.

Has anyone else noticed this? Is it a bug with Sonic?

madshi · 22nd May 2007, 17:18

Quote:

Originally Posted by Borbus

I'm using this with the Sonic Audio Decoder. I have the decoder set to environment quiet. I've tried converting eac3 to wav. I have the soundtrack in eac3 and ac3 from a DVD. Comparing eac3 decoded with this to ac3 decoded with foobar2000 this seems to be obviously dynamically compressed.

Has anyone else noticed this? Is it a bug with Sonic?

Try using "environment normal". That might do the trick. At least that's what I'm using.

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21st May 2007, 10:36	#61 \| Link
Neo Fagin Mmmmmmmmangoscam! Join Date: Sep 2006 Posts: 51	Retrying now, I'll let you know if it works or not.

21st May 2007, 10:58	#62 \| Link
Neo Fagin Mmmmmmmmangoscam! Join Date: Sep 2006 Posts: 51	Seems to work now. May as well ask for a "feature" so to speak - since this tool writes raw/wav files to disk as intermediates to the process, would it be possible to make this tool capable of doing two transcodes at once if given the option - ac3 and flac on the same command line? Saves having to run it twice since the raw/wav files are already created on disk for either process individually.

21st May 2007, 13:08	#66 \| Link
Neo Fagin Mmmmmmmmangoscam! Join Date: Sep 2006 Posts: 51	The output appears to be okay 5.1 AC3. I haven't loaded it into Vegas or the like to do a comparison with ac3 made from the eac3 via sonic, though, but during playback the channels all appear to be in the right spots etc. Could it be possible to do the flac/ac3 at once transcode thing if the -keep24 switch is used, thusly both flac and ac3 would logically use the same 24-bit raw file? Flac's primarily an archival medium in this instance so filesize isn't a terrible concern. If not, no big deal, just the thought occured to me. I suspect it's maybe a half-dozen lines of code to implement at any rate.

21st May 2007, 13:40	#69 \| Link
ACrowley Registered User Join Date: Apr 2006 Posts: 1,008	mhh strange When i want to type in the Nero HDDVD/BluRay Plugin Serial, Nero tells me i have to upgrade to newest Version first. i use the lstest Version....?

21st May 2007, 17:05	#73 \| Link
madshi Registered Developer Join Date: Sep 2006 Posts: 9,140	As far as I can see the latest version is 7.8.5.0.

21st May 2007, 17:12	#74 \| Link
Darth Pinous Registered User Join Date: Feb 2007 Location: In a galaxy far, far away Posts: 51	This means that the serial is wrong, nothing to do with a version problem. If you buy the plug-in from the Nero website, you will see that the serial they will give you is waaay different from the one you're trying to use... Just tested Nero plugin to convert Matrix Reloaded Dolby TrueHD track into Wavpack lossless track. Man, what a killer audio track ! I tried first to convert the WAV file to 16 bits with WaveWizard before converting it to Wavpack, then to convert directly the 24bit WAV file to Wavpack. The 16bits Wavpack was 1,43 GB (which make a 1,5 Mbps average bitrate, quite dynamic movie !) while the 24bits Wavpack was 2,9 GB (I use option -h for Wavpack reencodes). Despite the huge size difference, I couldn't hear any differences between the two audio tracks. So, not sure that there is one. Does anyone know how to mux an elementary audio track (let's say a demuxed Dolby TrueHD track) in an EVO container or could anyone point me to a guide explaining how to do it ?

22nd May 2007, 04:33	#76 \| Link
orbitlee Registered User Join Date: Apr 2006 Posts: 78	Guys, don't bother madshi with the trouble by pirated nero keygen. madshi, great work. I managed to build the filter chain in graphedit for TrueHD. Looks like it's time to consider the truehd source file :-) BTW, I got a sample of m2ts with TrueHD audio track(from Blu-ray Nine Inch Nails), unfortunately nero splitter does not split it correctly(only ac3 audio track, no truehd).

22nd May 2007, 16:58	#78 \| Link
Rectal Prolapse Registered User Join Date: Mar 2005 Posts: 433	orbitlee: Confirmed. I couldn't get the NIN Blu-ray working with Nero either. No TrueHD track to select.

22nd May 2007, 17:07	#79 \| Link
Borbus Registered User Join Date: Sep 2006 Posts: 52	I'm using this with the Sonic Audio Decoder. I have the decoder set to environment quiet. I've tried converting eac3 to wav. I have the soundtrack in eac3 and ac3 from a DVD. Comparing eac3 decoded with this to ac3 decoded with foobar2000 this seems to be obviously dynamically compressed. Has anyone else noticed this? Is it a bug with Sonic?