Amplify AC3 and MP3 using VirtualDubMod

[pc_speak]

Looking for a way to easily increase the gain on AC3 or MP3 audio in AVI videos I wrote a batch file that uses VirtualDubMod.
I'd like someone to test.
Please?

http://www.megaupload.com/?d=DFNQ1T1X

The contents of the zip file go into a folder with the AVI(s).
Double click on AudioBoost.cmd
The output is written to the \complete folder. The original videos are NOT touched. (Please allow for HDD space needed.)
When the vdubmod window opens click on 'Options/Show status window' for a progress view.

Two things have come to light when I run this batch file.
1. If you select MP3 and the input audio is AC3 then you end up with an AVI with MP3 audio that has perfect sync. (Neat conversion tool? :) )
2. If you select AC3 and the input audio is MP3 then you end up with, usually, unsynced garbage.

:thanks: for your time.

[setarip_old]

Hi!

Looks interesting ;>}

Can't the same thing be accomplished by, in VirtualDubMod, setting "Audio" to "Full Processing", selecting "Volume" (and inputting % of increase desired) and then using VirtualDubMOD's "Job Processing"?

[tebasuna51]

Can't the same thing be accomplished by, in VirtualDubMod, setting "Audio" to "Full Processing", selecting "Volume" (and inputting % of increase desired) and then using VirtualDubMOD's "Job Processing"?
Yep, is the same.

VirtualDub(Mod) is a useful soft to edit video and mux/demux audio but like audio converter is very limited.

The recommended method is use VDM to demux the audio, convert the audio with BeLight-BeSweet, Foobar2000 or BeHappy-AviSynth and then remux with VDM.

VD(M) audio converter problems:
- You don't know how much you can amplify without cut (you need tools like maximize/hybridgain/Normalize...)

- The ac3 internal decoder is limited to stereo and you can't control if want use DialogNorm or DynamicRangeControl.

- The encoders are also very limited. You can use LameACM for mp3 but for ac3 the Ac3ACM is not recommended.

[pc_speak]

Thanks. :)

I just wanted a method where I could dump a bunch of videos into a folder and give the audio a boost.

Amplification of John Wayne's voice with clipping? Would I notice. :D

Thanks again.