song ripped from DVD

Autraya · Post by **Autraya** » Wed Oct 31, 2007 7:40 pm

so I've been unable to find CD's for some ending theme's I like so I ripped em off DVD.
this is actually how I did it:
1.) Ripped the chapters I needed with DVDdecryptor
2.) Ran DGIndex choosing .wav output format (48khz and the english language track, I think -note i was barely awake when I did it and now I'm at work so the settings are a little fuzzy in my mind). Usually I disable my audio in DGI instead of later with avs but that's besides the point

When I play the song it's really only at 1/2 (ish) the volume of songs I've gotten from CD, now I remember when I made 'Code Red' I had to jack up the decibles(sp) on the audio from Spriggan to the max premiere allowed and export .wav, then import, jack it up to max again, export etc (rinse repeat) about 5 times i was after a quick fix 'cause I didn't think I'd ever have to get audio from DVD again -_-
Anyway what I'm actually wondering is why the audio is so soft in terms of volume from DVD how should I be ripping to get it louder?

Note: I still will not feed Shagg's after midnight for halp

Scintilla · Post by **Scintilla** » Wed Oct 31, 2007 8:11 pm

This is pretty consistent with most DVDs I've seen, but it does make sense.

On audio CDs, all you have is the music, so it's not a problem to bump each track up as loud as it can go.

On animé DVDs, you have to worry about the sounds from the entire rest of the feature. It's highly likely that the music will not be the loudest thing in an episode, so they can't encode it at max volume. (If they did, they wouldn't have any headroom left for other, louder sounds.)

In short, I don't think you're ripping it wrong; I think it's just stored at that volume. Take the WAV into your favorite audio editor and Normalize it to get it to max volume in one shot.*

* If that still isn't loud enough for you, then consider hard limiting, which will bump it up past the limit, but then flatten out the peaks so that there's no clipping. This can be very useful if you don't overdo it.

Qyot27 · Post by **Qyot27** » Thu Nov 01, 2007 12:27 pm

It's actually a feature of AC3 encoding, which is why it's widespread. DVD players control the volume on output to manage and mitigate the effects of the much loader sounds in the track, and to make the softer sounds more audible at the same time without the load parts blowing out your eardrums. Blame Dolby.

If it's MP2, though, then the same principle probably applies, but I doubt it's actually a part of the standard like it is with AC3. Same with PCM tracks (although PCM tracks are probably even more rare than MP2 ones are, although it does seem to be more common for Japanese R2s and apparently music - as in concert or music video - DVDs).

Typically if it's too soft in volume I take the file into Nero Wave Editor and normalize it to 0, and if it's still too soft I manually raise the decibels myself, usually no more than 4 or 5 db above what the normalize function did. I just tell DGIndex to demux the audio, not to decode it to WAV.

Qyot27 · Post by **Qyot27** » Thu Nov 01, 2007 12:30 pm

Qyot27 wrote:It's actually a feature of AC3 encoding, which is why it's widespread. DVD players control the volume on output to manage and mitigate the effects of the much loader sounds in the track, and to make the softer sounds more audible at the same time without the load parts blowing out your eardrums. Blame Dolby.

My goodness, I sleep for 10 or 11 hours and I still end up spelling 'loud' and 'louder' wrong.

Autraya · Post by **Autraya** » Tue Nov 06, 2007 11:58 pm

Qyot27 wrote: My goodness, I sleep for 10 or 11 hours and I still end up spelling 'loud' and 'louder' wrong.

lol I didn't notice ('cause usually my spelling is so bad(I type too fast and can't touchtype >.<) I don't really care if others is.
I'll try demuxing when i get home (i totally fergot what i did before)
anyway thanks guys

yoshi1001 · Post by **yoshi1001** » Thu Dec 06, 2007 4:38 pm

This is also a good thing to be mindful of when you burn videos to dvds. DVDs have a larger dynamic range since the audio uses 24 bits per sample instead of 16 bits per sample for CDs. As a result, you'll need to drop the audio level by 8-12 db if you're putting your video with CD audio on a playable DVD to avoid waking the dead.

At least it's not as bad as when I watch HDTV on my computer. The volume level is so low sometimes I have to turn my computer all the way up to hear it.

Calf · Post by **Calf** » Fri Jan 18, 2008 1:45 am

Как много буковок. Сейчас загружу свой переводчик.