PAL to NTSC ac3 audio out of sync

[djskribbles]

not sure where to post this question. sorry if its the wrong place.

i'm converting a PAL xvid video to NTSC MPEG2 DVD. i used the "assumefps(23.976,true)" with avisynth to convert the pal video to ntsc. i demuxed the ac3 audio and ran it through tmpgenc dvd author, but the audio was out of sync. how can i convert this video to NTSC MPEG2 DVD while keeping the ac3 6ch audio in sync?

[setarip_old]

Hi!

Perhaps the simplest way would be to load the .AVI into the excellent (freeware) and easy to use "DVD Flick"...

[Mr_Odwin]

Using the assumefps method you'd have to slow down the audio because your script slows down the video.
I would encode the PAL avi to a PAL (25fps) m2v and then use dgpulldown to pulldown from 25 to 29.97 (use a max GOP length of 12 just to be on the safe side). Your ac3 audio will then remain in sync.
(FAVC would do this for you automatically if you were to use it.)

[djskribbles]

thanks. ill give FAVC a shot.
so would i just have to select NTSC as the target and it will do the conversion automatically?

[Mr_Odwin]

That's correct. (I've not tried DVD Flick so but it may do something similar.)
If you choose to not delete the temporary files then you can ignore the dvd that FAVC produces and author with TMPGenc if you wish to.

[djskribbles]

thanks again.

TMPGEnc DA allows you to author dvd files as well.