Rip Individual Audio Channels from Blu-Ray Disc?

[EmpireSB]

Hi. I was wondering how you can rip individual audio channels (namely, rear speakers) from a 5.1 (or 7.1) channel mix on a Blu-ray disc. With DVDs, I would rip the .ac3 file with DVD Decrypter and I would extract the audio channels (such as the left and right rear channels) I wanted with HeadAC3 into a single stereo WAV file. Is there a process similar with Blu-ray? Is there a program like DVD Decrypter for BD's? And a similar HeadAC3 program for DTSHD files? Thank you.

[Inspector.Gadget]

eac3to E: 1) 3: someaudio.wavs

Mix as appropriate with Audacity, etc.

[EmpireSB]

Hey, thanks for that. Everything seemed to be fine until I imported it in the Audacity. I imported the front left and right channels to create a single stereo track except the left and the right channels are exactly the same so it created a "stereo" mono track. I used the libav decoder. I don't have ArcSoft or the Sonic decoder. Thanks.

[EmpireSB]

Anyone know why I am getting these mono "stereo" tracks?

[tebasuna51]

Because your source have the FL = FR?.

Isn't an eac3to bug.
If you think so put a sample.

[nurbs]

If you want a stereo track you can do something likeeac3to E: 1) 3: someaudio.wav -down2for a proper 5.1 -> 2 channel downmix.

[EmpireSB]

Because your source have the FL = FR?.

No, the FL isn't the same as the FR. It may very well be a bug. How should I post a sample? The FR and the FL should form a stereo track, but each channel the same. It extracts the center speaker just fine. It is the same problem with the rear speakers. What I think it is doing is mixing the FR and FL together, but creating two separate files from the FR and FL. I hope I am making sense.

[EmpireSB]

If you want a stereo track you can do something likeeac3to E: 1) 3: someaudio.wav -down2for a proper 5.1 -> 2 channel downmix.

What I would like are the stereo files from the front channels, and or rear channels. Is what you suggested convert the whole 5.1 mix to 2 channels?

[nurbs]

Yes. (filler)

[EmpireSB]

Thanks for the reply and trying to help, but I am looking to extract only the rear channels from a 5.1 DTSHD soundtrack, but whenever I do that, it comes out as a "stereo" mono track.

[nurbs]

If you think it's an eac3to bug post a sample. Demux the track and cut a piece from the beginning.

[EmpireSB]

I will do that. Where should I post it at? Thanks.

[tebasuna51]

First you need post (copy & paste like text) the complete log of the eac3to extraction.

To upload samples you can use many ways, for instance http://www.sendspace.com/

[EmpireSB]

I am trying to make a sample and I am running into more problems. I am using "UsEac3to: A different GUI for eac3to". The .dtshd file loaded just fine.

I typed in the following code:

eac3to E: 1) 3: someaudio.wavs

And I got this error message:

The parameter "1)" can only be 1st or 2nd parameter. <ERROR>


Then I typed in this code:

eac3to input.dtshd output.wavs

And I got this error message:

Source file "C:\Users\ESB\Desktop\Sample\1_3_audio.dtshdeac3to" not found. <ERROR>

It was working fine before with the first code, but now it isn't working at all. I linked the latest version of eac3to to the GUI and it imported the file fine. I am not sure why it isn't working now. Thanks for any help.

[tebasuna51]

If you load the .dtshd in UsEac3to you only need:

1) Select 'wavs' in 'Output format'

2) Click in 'Add'. Now 'Command line parameters' show:
%_.wavs

3) Click 'RUN commnad line'

You don't need write 'eac3to' or the input file

[EmpireSB]

That worked great, thanks. And now the the sound is in stereo instead of the "stereo" being mono. Also, the DTSHD file is a 7.1 mix but only 6 channels were extracted (including LFE). It didn't extract the side speakers. Does eacto not support 7.1 mixes? Thanks, again.

[tebasuna51]

You need ArcSoft decoder to extract the 7.1 channels in dtshd, with only libav you can extract the standard dts 'core' 5.1 inside the dtshd.

[Prerlerm73]

Can someone list in order from best to worst all the audio formats currently supported by Blu ray?


Thanks,

Richard.

[Audionut]

Prerlerm73, there is no best.

But you can have,

PCM
Dolby TrueHD
DTS-HD Master Audio.

Which are all lossless files.

Then the lossy ones such as,

Dolby Digital
DTS.