I discoverd some oddness related to when MovieFactory 2 trys to re-encode my already encoded MPEG's when trying to author a DVD. I am aware of the don't convert compliant switch and the fact the input has to be lower quality than what is selected in MovieFactory.

I had video encoded by TMPGENC at 8000K CBR. MovieFactory insisted I re-encode it, i.e. rendering may take a while popup. I cancel. I get a copy of CCE and give it a try. I encode my video at 7800K CBR. Imports fine and MovieFactory does not try to re-render it. I learn more and get ambitious with CCE and do a VBR encode with average of 7800K and max of 9000K. CCE produces separate audio and video files. I use TMPGENC to combine them (haven't figured out how to do that in bbMPEG yet). MovieFactory tries to re-render this file. A tip off is that the file is around 3gig but the video in the time strip says 2gig. I also try a VBR with a max rate just under 8000K. I don't bother muxing it and use the replace audio feature of MovieFactory. MovieFactory is happy. I then try the higher bit rate video only file. MovieFactory shows the correct file size. I select replace audio and add the audio track. I am now able to create a DVD with MovieFactory leaving every thing alone.

Any one have any experience in how well the audio is sync'ed with video when MovieFactory does it? My source material is hard to judge because the audio is a music track to a dance video so it is not that tightly sychronized to begin with.