Error when encoding a wav file

[mataharimata]

Hi everyone,

I have a few .avi files that I would like to put on a DVD. They all need to have their sound re-done. The way that I do it is first save the .wav with VirtualDubMod.exe, then use TMPGenc Xpress for the video only so that I get .m1v files and then I use Wave Lab to convert the .wav files to .mp2. Then patch the video and the audio files together with TMPGenc Plus. And then use TMPGenc DVD Author where I add all the resulted .mpg files to make a DVD. I don't know if this way is the correct one, but it has always worked for me.

Now, there this one .wav file that cannot be converted into .mp2, it always gives me an error at the same place. I even tried demux-ing the file as .mp3 and .ac3 with VirtualDubMod.exe, but same thing happends - I get an error. When I play the .avi file it doesn't seem to have anything wrong with the audio accept the delay, which of course is the reason why I need to re-do all the sound.

Is there anyway of fixing the audio?

Thank you, I appreciate it!

[Baldrick]

try convert to wav with something else like avi2wav or goldwave.

[mataharimata]

The file that I extracted is wav, so do you mean from wav to wav?

Thanks

[thor300]

Goldwave has sometimes worked for me where everything else has failed. Load the AVI, let it extract the audio, then save as wav. Audio sync problems can also be fixed with goldwawe, use the timewarp effect.

[Baldrick]

no, i mean open the avi in avi2dvd or goldwave.

[mataharimata]

I think I am going to need a little more help with doing this... I opened the avi in Goldwave, then File>save as... It saved it as wav but the file is 1.2 GB... which I don't think is right. Also I don't understand what I have to do with the Timewarp effect... please help me, I am sorry I just have never done it this way...

[Baldrick]

It should be big if you choose uncompressed wav, about 10MB/minute.

[thor300]

When I play the .avi file it doesn't seem to have anything wrong with the audio accept the delay, which of course is the reason why I need to re-do all the sound.

Thats why i mentioned the timewarp, you can stretch or squeeze the audio there (if the sound goes more an more out of sync as it plays).
The filesize of 1.2GB is promising, that indicates Goldwave managed to extract the full audio. Now convert that Wav file to MP2.

[mataharimata]

So, I extracted the wav from Goldwave and as I said it was 1.2GB. Then I thought that I should just proceed as normal and Save the wav as mp2 in Wave Lab. Well, I got the same error message...
I think that I must be doing something wrong with Goldwave, as also I didn't understand the part of Timewarm...

[mataharimata]

Oh, I am sorry Thor300, I didn't see your message. It is very difficult to determine if the sound goes more and more out of sync as it plays, I believe it does. However, I don't understand how I can use Timewarm to stretch or squeeze the audio as I don't know where to do so and of course also how to do so... Please help

[thor300]

Then you better find a step by step guide or something like that, click on ALL GUIDES in the menu to the left.

[mataharimata]

OK, thanks, I will do that.

[mataharimata]

I went through the Goldwave guide (avi to wav) and here is what I did:
First I resampled the file from 48000 Hz to 44100 Hz, then I used Timeward and selected 1.0427% for PAL, and then saved it as wav on 16 bit stereo.
In Wave Lab it finally manage to go all the way through and now I am extracting the video only with TMPGenc Xpress.
So far it's all going really good but I am a little worried as the wav file became more then a minute shorter and does not match the length of the avi, which means it will probably also not match the m1v... but I am guessing. However, we did do something right as yesterday when I did this for the first time with Goldwave and just saved the wav without changing anything, I did get the error again, which means that now by changing it works, the question is whether it will match, and if it doesn't, do I then resample the Hz only or change to 1.0427% for PAL. I have a feeling that if there is a mismatch then it will be the resampling.
I will post when I have the results.
Thank you all for the help!

[thor300]

Not to confuse you, but was a NTSC to PAL conversion what you wanted to do? I might have confused you in the first place with mentioning goldwaves timewarp Anyway, what you want to do is to sync the audio to the video, and to do that you need to find a custom timewarp rate, IF the audio goes more and more out of sync as the video play. If the audio desync is constant you just need to set Audio Skew Correction in for example virtualdub. This can be done in goldwave also, but its not common to use it, most people would use virtualdub for that i think. SOMEONE PLS WRITE A GOLDWAVE GUIDE!
But IF the audio goes more and more out of sync you use goldwaves timewarp. Try to determine how much out of sync it is at the end of the video, and this is the value you enter into the timewarp. For example, if the audio was 3 seconds late then you subtract 3 seconds from the "Length(s)" in timewarp dialogbox, so if it was lets say 1:30:45.095 then your new value is 1:30:42.095. If the audio plays early your new value will be 1:30:48.095. Now you can resample if needed and save the wav, multiplex it with the video and test. Expect to try and fail more than once
There are other/better tools to use for audio syncing, sorry i dont know anything about them, hope someone else can help if they have an easy solution.

[mataharimata]

Wow, I must say this is the longest period of time that I have spent on a single avi file... Here is what I did:
After extracting the video with TMPGenc Xpress, and going through TMPGenc Plus, the video and audio were further apart then ever, so that was definately a no go.
Then I managed to sync the video and audio with VirtualDub as the difference was constant, THANKS for the tip!
Then I anyway tried saving the audio as wav in VirtualDubMod and converting it to mp2 with Wave Lab, but didn't work. Then I tried Goldwave, I first only resampled and run it through Wave Lab, got the error again at the same place. Then I only ran the Timewarp in Goldwave, setting the time to match to the length of the video, but the result that it authomatically gave me was somehow 33ms higher than want I needed, tried it again and again, and still got the error in Wave Lab... so I got real tired of the whole thing... and... decided to convert that single avi to DVD in DVD Santa, it worked, so I have it now on a DVD which anyway was the end result that I wanted to reach. I normally wanted to put 2 or 3 avi files on a DVD as they are each about 2 hours long, but hey this way is OK, and I can play it on my DVD player so that's the most important.
Thank you all for you good advise! I really appreciate it!