Well still no success. Used MeGui and MKV2VOB and files still came up sound out of sync.

In reply to Mr.H the fps convert=true was there in XVid4PSP.

I am trying to encode Coalgirls batch torrent of To Aru Majutsu no Index 1080x720p Blue Ray Flac. Different codecs, different players, all same outcome.

Could anyone help and try to successfully encode it .mkv>.mp4 without sound messing up?

Just for info I can and have encoded other anime no problem at all. This is first file type thats ever given me this problem.