AC3 decoding question....

[DJScorp]

Hello, I'm trying to create a SVCD out of a DivX file (Windtalkers), now when I rip the ac3 sound with VirtualDub I get an ac3 file, I put it in Headach3e, and convert it to a wav file... now the problem is: i'm getting a wave file with the volume of the sound effects in a much much higher volume than the speech... It's almost impossible to hear what they are saying cuz the volume is so low. What should I do to get my speech etc. as loud as the sound effects ??

Greetz Scorp

[0 kewl]

If audio was fine in your original AVI then just multiplex your WAV with your AVI with Virtual Dub using this guide:

http://www.doom9.org/index.html?/virtualdub_procedures.htm
(you need only section called Multiplexing)

It should play fine now.

[miketree]

I have the same/similar problem. WHen I save the sound as wav file then re-encode with tmpgenc, the sound is rather quiet & the speech is sometimes drowned by the music etc.

Is it 'cos the sound is 5.1 and wav doesn't know that? Is there a better wat to produce my mpg from a divx with great sound?

[fantomlord]

try using besweet GUI to do audio separately, and on the SSRC tab, select "normalize the wav file"
That may help

[miketree]

doesn't that just make the overall volume of the wav the same level. It won't make the quiet voices louder, but not he music in the background, will it?

[banjazzer]

When you load the ac3 into HeadAC3he, click the options button. You can adjust the individual channels to your liking.

[roach76]

This audio file needs to have it's Dynamic Compression changed. A program like BeSweet or Headac3he can do this. If you increase the Dynamic Compression and use say the 'Normal' Setting it will increase the low volume sounds and decrease the louder sounds, compressing the overall range from the lowest to the highest volumes. If you set this higher to say like the 'Heavy' setting, the lower volumes will be increased and the higher ones decreased even further. I use the 'Normal' setting because if you go too far you could have a scene where someone is whispering almost as loud as an explosion going off.

But because the higher volume sounds have now been lowered the file has to be normalized after the compression has been changed.