too HUGE .wav files with <virtual Dub

[mangobar]

HI folks

Here comes my problem.
Using the guide Avi2VCD I made my .wav files with Virtual dub
and the files is about 1 000 000 Ko......... :
So, when I want to burn my .mpg movie (making with TMPGenc ) with Nero, the movie becomes so huge (100h) !!!!!!!!!!!
My question is : it's normal that a 1h30 avi movie becomes a 100h one ?
And if not, could somebody explain me what I do wrong

[SLK001]

I don't understand exactly what you are saying. But, a 2 hour two channel .WAV file at 48ksps is :

48,000(sps) x 2(chan) x 2(bytes/samp) x 7,200(sec) = 1.3824 Gbytes long.

Or, for every minute, a 2 channel .WAV is 192 kBytes. If your .WAV file is longer than this, then there was an error in the conversion.

[mangobar]

Thanks for reply !!!
If i undestand my .wav file is ok !
Can you explain me how i do to burn my 1 Gbytes file on a cdr.
Do i have to cut it in two parts even if my original avi file is about 700 Mb??? :cry:

[mkelley]

Just in case you were wondering, the reason the commercial DVDs don't have a problem with large wav files is because they don't use them. All of their sound is encoded as AC3, which is a compressed format similar to the way an MP3 file compresses a CD sound file.

AC3 provides very high quality in a much smaller space -- if you can use AC3 you'll be far better off. BeSweet is a freeware application that can convert your .wav into DVD AC3 compliant files.

[SLK001]

Just in case you were wondering, the reason the commercial DVDs don't have a problem with large wav files is because they don't use them.

Well, I have commercial DVDs that use nothing but LPCM audio. AC3 audio would compress the required space considerable (audio length about 17% of the LPCM length).

But I agree that using Besweet to convert the .WAV to .AC3 would be the intelligent thing to do.

[mkelley]

Hmmmm -- I have hundreds of DVDs (which is why I'm so poor and I've *never* seen one that wasn't dolby digital (even the very oldest ones I have).

I guess I'm just buying mostly mainstream stuff -- would be interested in knowing just what was a title you didn't have DD sound on (I'm strictly NTSC, region 1).