could someone check this and advise please, im trying to convert an ntsc 23.98fps xvid to an ntsc 23.98fps dvd. im using ffmpeggui to convert the audio to ac3, then i use mainconcept to convert the video on field encoding i choose progressive frame then i choose 23.98 for the framerate. i then change autogop to fast. ive tried converting to 29fps but kept getting sync issues so i figure its easier to keep the framerate as it is. do i have to do anything else to the audio? are my video settings correct?