Comments on: DVD Audio Extraction

By: John F

John F — Sun, 12 Dec 2010 03:59:26 +0000

Great stuff. This helped me out immensely. Thanks.

By: Carlton Bale

Carlton Bale — Thu, 12 Aug 2010 19:49:26 +0000

Thanks Matt for the very helpful comments. This will definitely be beneficial to me and to others as well.

By: Matt

Matt — Thu, 12 Aug 2010 13:24:51 +0000

Thanks for this guide – found it very useful, especially the first half.

I had trouble getting lpcm24 to work with my DVD. Ended up using eac3to instead (available from Doom9 site) which allowed more flexibility when interpreting the PCM files.

Noticed an earlier comment about having difficulty batch converting files. I wrote a four line script to do this for me:
REM Add a .pcm extension to the vStripped files to help eac3to
FOR %%I IN (T*) DO MOVE “%%I” “%%I.pcm”
REM Convert 2 channel, 16 bit, 48KHz PCM files to WAVs
FOR %%I IN (T*.pcm) DO eac3to.exe “%%I” “%%~nI.wav” -override -2 -16 -big

To make your own version copy the two lines into a text file using the file extension .bat or .cmd, change the value in the parenthesis to match your files (my files started with a T and had no file extension), then save the file. You might need to experiment with the eac3to parameters to get the desired result.

By: Carlton Bale

Carlton Bale — Fri, 24 Apr 2009 14:25:09 +0000

Phil, this method works for de-muxing the audio file from the DVD video. You’ll need a different program to convert the ac3 audio to a standard format, and I’m not sure what software supports that.

By: Phil

Phil — Wed, 22 Apr 2009 20:43:46 +0000

Carlton, Does this method work with DVD’s that have AC3 2 channel audio rather than the LPCM

By: Phil

Phil — Fri, 03 Apr 2009 14:14:36 +0000

That’s what I’ve been doing as well. It would be nice if someone could develop a nice GUI or work with the multifrontend program to add this program to it. Thanks for the quick response.

By: Carlton Bale

Carlton Bale — Fri, 03 Apr 2009 13:43:11 +0000

Phil, unfortunately, I’ve haven’t found a way to automate the process. I just hit the “up arrow” key to bring up the previous command in the command prompt, edit it, and hit enter to get it to run again.

It is possible to drag a file and drop it on an executable from within Windows File Explorer, but lpcm24.exe requires that an output file name be specified, so I don’t believe this method works in this case.

By: Phil

Phil — Fri, 03 Apr 2009 02:46:13 +0000

Carlton I’ve been using the lpcm24 program. It’s been working great. The one issue I have is the command line for multiple files. I convert a file, then type in the next file, etc. What is the best way to convert multiple files from raw to wav instead of having to type each file name after each conversion. Is there a batch mode syntax for the command line? As always thanks so much for your help.

By: Carlton Bale

Carlton Bale — Mon, 19 Jan 2009 14:11:43 +0000

Phil: You have 2 options. If you want a standard file that is playable by any music application, convert it to a 16-bit, 44.1 kHz wav file. If you want to play by the high-definition original, you’ll need a software player that can send the original 24-bit, 96 kHz file out the digital output of your computer to a receiver that can decode at that bit rate.

For simplicity, I think the down-conversion to a lower fidelity is worth more than the hassles of trying to play back the original audio stream.

By: Phil

Phil — Sun, 18 Jan 2009 21:07:02 +0000

I should probably mention that I ripped the VOB files using DVDfab5.