After rendering a 90 min video, an audio-video sync issue occurs about 1/2 through the wmv. Using media preview, all is in sync but after rendering the problem shows up. No problems with source original encoded wmv.
The only editing done on the piece was cutting two sections out. No overlaping or resizing of content, just straight forward renderinig from wmv to wmv.
Have rerendered on same computer, changed computers, changed computers and used original source files.
Any insights out there?