Originally Posted by incredible

You can choose the OTA options of Besweet to convert the 25fps to 23.976fps audio speed. But if you are not in Besweet you can choose the following way....:

Change your AVS as following:


So as you see, delete the ",false" in your import-line so the audio also will be treated. Adding the ",true" to AssumeFPS() keeps the audio in sync by rising/lowering the Khz of your audio which will be served. But finally the Audio won't be at 44.100khz anymore .... but we'll fix this in HeadAC3che later ....

So, :arrow: .... open this .avs in Vdub :arrow: ... go to the audio tab and choose "no compression" :arrow: finally choose in Vdub "Save WAV as..." to safe your well sync'ed audio to HD as WAV ...

Now as your WAV in this state doesn't run at 44.100khz anymore you load this WAV into HeadAC3che and do your mp2 encoding settings INCLUDING choosing .... "Resample Audio to: 44.100"!!!!! Maybe its called in there "Convert Audio..." well you'll recognise. And continue doing your mp2 conversion as known ...

After this "Audio Session" you go back to your .avs and insert again the "..., false" to your Import Line. :arrow: Continue with your video encoding as you do it in regular.

Its also possible to add a "ResampleAudio(44100)" at the end of the .avs so you don't need to do the conversation in HeadAC3che...
BUT!: I figured out that the resampling quality of Avsiynth isn't that good in comparison to HeadAC3che.

I hope this helps...

Inc.

PS: Just converting the audio of a 25.000 FPS to 23.976 ... will let you hear (as DialHot said) a recognisable low tone audio.
You can avoid this by using Goldwaves internal tone pitch option to pitch the tone of the WAV you safed without resizing the audio .... try the quality.