rmvb to avi, sound syncing problems, any tips or tricks

[dudeboy]

hi just needing a bit of advice im new to this forum so correct me if iv done something wrong.

iv searched countless posts with no clear direction.

i hav a bunch of rmvb files that iv converted on ffmpegx to avi, which i then put on a data disc to watch in xbox 360 n dvd player.
But the sound is a bit out of sync. just wondering if there are any settings i can change on ffmpegx, so it comes out better. like up the quality or something,

or if i should convert to something befor goin straight avi.

or if theres a program thatl do it after

just keep in mind theres like 300 episodes n dont reallly want to edit them individually

any advice willl be most appreciated
=]

[AlanHK]

I don't know if you can use Avisynth on Mac, but I do it like this in Windows, with a source nominally 25 fps:

DirectShowSource("file.rmvb", fps=25, convertfps=true)
EnsureVBRMP3sync()

That kept it in sync.

[dudeboy]

yeah i tried to do that on ffmpegx couldnt figure out wat convertfps=true was
but it seemed to help a bit stilll not perfect tho

thanks for the help tho