The longer the file, the more progressively the file falls out sync. It is common for these files to preview in sync with Windows Media Player but are out of sync on the final dvd. Demuxing is basically pulling the files apart and putting them back together into a.
ADOBE ENCORE CS6 AUDIO NOT SYNCING SOFTWARE
This happens outside of the DVDit! software and is not necessarily a bug with DVDit! By following the DVD-Specification for the most compatibility with DVD players, Sonic’s software “demuxes” the interleaved Audio and Video files.
This is usually caused by video frames being dropped either while the file is being digitized into the computer or when the file is converted into the Mpeg format. When I play back my DVD/VCD the audio doesn't match the picture OR it speeds up a few minutes in OR slowly goes of synch. Wish I knew beforehand as I no longer have the source video. You can find more info on "DVD-Ready" on the sonic web site. One solution is to record MPEG2 files in "DVD-Ready" format. If anyone else has info on this topic, I'd love to hear it. Each is transcoded separately and then put back together. As far as I can tell, this is due to the separation of audio and video during the process. Basically, the preview and MPEG2 are fine, its when the file is transcoded to DVD MPEG2 that problems arise. I got this info from Sonic MyDVD after similar audio/video synch problems.
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