HydrogenAudio

Hydrogenaudio Forum => General Audio => Topic started by: adlai on 2006-03-31 06:19:18

Title: extracting music from a dvd
Post by: adlai on 2006-03-31 06:19:18
I have a dvd. It has a LPCM track, which from what I googled is an uncompressed format (that's why the music quality was so good!)

anyways, there are mixes of songs on the dvd that I can't get on cd, and so I want to extract it. I'm also hoping that the LPCM is already broken into tracks so I don't have to do it manually in audacity... how can I access the LPCM layer for lossless compression and tagging?
Title: extracting music from a dvd
Post by: rohangc on 2006-03-31 06:53:41
Use DGIndex to demux the audio track. Make sure that all audio processing like normalization or downsampling to 44.1 KHz is turned OFF.

For more details, visit Doom9 (http://www.doom9.org/) and read the tutorials.
Title: extracting music from a dvd
Post by: Synthetic Soul on 2006-03-31 06:56:22
I have previously done this with DGIndex, but I think the more direct approach is to use DVDDecrypter.  There's a good explanation here (http://www.doom9.org/index.html?/dvddec.htm).

You could take a look at my thread here (http://www.hydrogenaudio.org/forums/index.php?showtopic=40292&hl=), which discusses ripping the audio as one file with cuesheet, which may help a little also.
Title: extracting music from a dvd
Post by: rohangc on 2006-03-31 06:57:33
Quote
I have previously done this with DGIndex, but I think the more direct approach is to use DVDDecrypter.  There's a good explanation here (http://www.doom9.org/index.html?/dvddec.htm).

You could take a look at my thread here (http://www.hydrogenaudio.org/forums/index.php?showtopic=40292&hl=), which discusses ripping the audio as one file with cuesheet, which may help a little also.
[a href="index.php?act=findpost&pid=377343"][{POST_SNAPBACK}][/a]



I agree. DVDDecrypter is easier and better. Why didn't I think of that? Too much coffee too late at night. 
Title: extracting music from a dvd
Post by: adlai on 2006-03-31 21:05:16
one quick question. The LPCM file is 48 hz, while redbook cd is 44hz. My intent is to convert this to ape and then transcode to mp3. would there be a loss in fidelity in downmixing it to 44hz? Do I even have to?
Title: extracting music from a dvd
Post by: AndyH-ha on 2006-03-31 21:35:58
You must resample to 44.1kHz for audio CD. If you use good software, the resampling will be transparent. Resampling is rather involved, however. Not all approaches are equal.
Title: extracting music from a dvd
Post by: adlai on 2006-03-31 21:44:03
I don't plan on burning it to cd... but rather to ape. I think ape can handle 48 hz... but what's some good resampling software? I tried chap2cue but it requires 44hz...
Title: extracting music from a dvd
Post by: Digga on 2006-03-31 21:58:12
Quote
I don't plan on burning it to cd... but rather to ape. I think ape can handle 48 hz... but what's some good resampling software?
if the Monkey can handle 48KHz there is no need to resample at all.

anyway, a high quality resampler (GUI version) is available here:
http://www.rarewares.org/files/others/srcdropV0.5.zip (http://www.rarewares.org/files/others/srcdropV0.5.zip)
Quote
A high quality sampling rate converter by john33 using SRC libsamplerate V0.1.2 from Erik de Castro Lopo.

for other option see here:
http://www.rarewares.org/others.html (http://www.rarewares.org/others.html)
Title: extracting music from a dvd
Post by: Firon on 2006-04-01 02:27:25
Unless you're gonna burn to CDDA, there's no point downsampling it. Better to keep it as 48KHz. And yes, Monkey's Audio can support 48KHz.
Title: extracting music from a dvd
Post by: adlai on 2006-04-01 07:46:06
well, I ended up cutting it up in audacity

it took a while, but then I don't rip many LPCM tracks so that's okay.

Oddly enough, the APE files sounded a little different from the DVD... there wasn't as much volume. Maybe because of all the processing that it went through? Also, how does LAME handle 48 hz?