Video/Audio out of sync after using StaxRip

[supernano]

I used StaxRip for the first time last night to rip a DVD to H.264 with AAC. I decrypted using RipIt4Me (DVDDecrypter) and used StaxRip for encoding using ffmpeg.

I just used the iPhone template for all the settings, just changed the cropping to a larger resolution.

Encoding process went well, but the resulting mp4 has video and audio out of sync. What did I miss? Is there any way to check video/audio sync before encoding?

I'm thinking of using AviDemux to fix the sync but I'm not sure if it's the most effective/efficient way to do it. Any better ideas for this?

Thanks!

[hech54]

I decrypted using RipIt4Me

Latest version:
1.7.1.0 (March 23, 2007)