NTSC <-> PAL Audio Trouble

[WebNutTimo]

I guess I'm just brain farting. I have tried several times to convert vids from NTSC to PAL and NTSC (film) to PAL to no avail.

I have no trouble with the video stream. The audio stream has me pulling hairs! I know that the audio has to be streched or compressed to match the new video length, but I can't figure out a simple (yea right) way to get it correct

Does anybody have this knowlage that they are willing to share? Maybe a GOOD tutorial, FAQ or how-to out there someone could point me to?

Thanks Tons and Happy viewing,
WebNutTimo

[dreassica]

Feed the file u want to convert with avisynth to Vdub with the AssumeFPS(25,1,True) line in it, to convert the movie to PAL speed, so that in Vdub u can see by going to the end of the clip what it's exact running time is at that speed. write it down.
Now load the unaltered WAV file into an external Audio editing program like Cooledit or soundforge and load it in. Now u just have to preform a timestretch operation, which can be used the other way around too, there u enter the number u noted from vdub as it's destination running time. let the prog do it's work and if everything has gone right, u should have an audio file which should run en synch with the video!!

[WebNutTimo]

Thanks for the reply!

I will give your method a try and let you know the outcome in a couple days.

Is there a special reason you feed the vid into VirtualDub via avisynth? I can change the framerate and filter the vid directly thru VDub.

Thanks again,
WebNutTimo

[dreassica]

i use it becauseof the speedincrease when doing it through Avisynth, u doný need to convert the colorspace to RGB for vdubs filters to work, which saves a lot of time of encoding. I only use Vdub to check it's total running time after PAL speed up.
I then resize,crop, add borders and use sharpening in avisynth and frameserve the script to CCe for SVCD/CVD encoding.
Works like a charm. And with the audio altering method i use, i get perfectly synched audio too. If the results aren't exactly right, i just alter the final running time in Soundforge accordingly. Just try it once. Multiplex the audio with the video, FFWD the video in any software DVDplayer to close to the end of the video and listen of the audio is suynch then, if it is u are done, if it is slightly off, u can alter the running time again in Soundforge!!

[WebNutTimo]

Thank you ever so much for your suggestions!!

The audio strech worked 100% and I am very happy for your suggestion to check out AVISynth. That little DLL does wonders! It's surprizing that more folks aren't using it

Thanks again!