How do you guys manipulate you avi audio

Cooldraft wrote on 3/31/2003, 3:29 PM

I have a avi file that I need to change the volume and do some other housekeeping. If I open the file in Soundforge, it takes forever to save. Is there a better way other thatn rendering the avi to wav amp the wav merge it back to the avi file?

Comments

Chienworks wrote on 3/31/2003, 9:30 PM

If the entire clip is low volume, i'll Normalize in Vegas which will bring the loudest peaks up to around 0dB, then cut back from there if necessary. If there are any much louder peaks then this won't work well at all, although you could split around the peaks and normalize the sections individually.

TorS wrote on 3/31/2003, 11:46 PM

I often use Graphic Dynamics in Vegas, set it to a "mild" compression*). There's a function there that maximizes the volume after the effect. I use that instead of normalizing. Normalize is like the brightness filter - you know what BillyBoy says about that. You don't? - well typography is hardly able to relay it anyway.

*) Usually I select the preset 2:1 at -18dB or the 3:1 at -15dB. If that doesn't keep the master metre below the red I try to lower the attack from 1.0 ms towards (if need be) 0.1 ms. That usually does it.

Finally - you must render the file. You can of course do the same in Sound Forge.
Tor

mcgeedo wrote on 4/1/2003, 6:32 AM

TorS,
For DVD, I have been setting the master control so that peaks run about -15 dB or so. This doesn't maximize the dynamic range, I know, but it makes the volume control setting on the external DVD player about the same for my DVDs compared to commercial DVDs. For clients who want output on VHS media, I run it a bit higher, maybe -6 dB. Does what I'm doing make sense?

Cooldraft wrote on 4/19/2003, 4:21 PM

So, if I am correct, you don't see the results of the normalization until you render? Is there a way to amplify the audio track on the timeline other than the volume control (which is all the way up)

GaryKleiner wrote on 4/19/2003, 4:47 PM

>Is there a way to amplify the audio track on the timeline other than the volume control (which is all the way up)<

I assume you mean thevolume slider in the track header. If you also add a volume envelope (hit the v key) you can drag it up for even more volume.

Gary

Paul_Holmes wrote on 4/19/2003, 7:10 PM

I've been doing what Tor has been doing more in the case of speech. In one case the speaker had a microphone but he refused to stay near it, so I used the Dynamics filter at 3:1 compression with auto-gain and tweaked it a little so it didn't sound distorted (lessened the threshold a little). Worked great. If there's music you have to be more subtle and maybe the Graphic Dynamics filter is better for that. Just noticed it now that Tor brought it up.