[MEncoder-users] muxed vs. unmuxed/demuxed mpeg clarification

[Nicolas Hesler]

My understanding is that Mencoder uses timestamp information to try to 
maintain sync when encoding. 

The DVD authoring program DVD Studio Pro for the mac only accepts 
unmuxed m2v and audio files.

This prompted me to wonder...

1. Is video editing software (such as Final Cut Pro) able to make 
unmuxed files that are perfectly resyncable? In this case, is the video 
and audio treated seperately and therefore there is no danger of having 
sync issues when remuxing the files in a DVD authoring program?  Is it 
because the audio/video are being served up raw from the software?

2. Is it only when you are transcoding compressed muxed files that you 
can are liable to lose sync?

3. Is sync guaranteed or otherwise better if you go from uncompressed 
windows AVI (other video formats?) to separate m2v and audio files?


Any help on clarifying this issue is much appreciated.