PAL AVI to NTSC AVI

[Shizuko]

Hello all,

I recently downloaded several seasons of a television series. The first season was completely normal. However when I watched the first episode of the second season I immediately noticed that the theme song was almost a semi-tone sharp. As a musician with a good sense of pitch I found this very annoying.

Needless to say, after doing searching I found that the AVIs were encoded in PAL.

I downloaded VirtualDub and BeSweet to try and solve the problem using the method described at http://www.johnisme.com/avi.shtml but when I saved and then converted the audio, I would get a lot of popping and clicking in the resulting WAV, plus the resulting file would be much larger than the WAV I saved from VirtualDub.

Using AviSynth and the AssumeFPS(23.976,true) filter I was able to get the file to play at the correct pitch and length with absolutely no loss in quality.

Naturally I tried to open and save AVS file in VirtualDub as an AVI but when I would do that, the projected file size was about 28 gigabytes whereas the source file is only 360 megabytes.

So I guess my question is: Can I convert the PAL AVI files into NTSC using just the AssumeFPS(23.976,true) filter and VirtualDub and have the size remain the same? If that is not possible then how can I convert the sound without the resulting pops and clicks that I got using BeSweet.

Thank you in advance for any help.

[mats.hogberg]

1) Separate audio and video.
2) Decode audio to wav.
3) Make wav longer (25/23.976 times) using either wavworks or GoldWave Timewarp function.
4) Patch AVI frame rate header value to 23.976 with avifrate.
5) Load patched AVI in VirtualDub
6) Select WAV audio and load your longer wav.
7) Set video to direct stream copy
8) Select appropriate audio compression (mp3 128 kbps?)
9) Save AVI

/Mats