What is your source video? Are you mixing an audio track to the video? Answer these questions I may be able to be mroe helpful, but otherwise, if your using the PC while it is exporting/encoding the clip - that may be doing it, or otherwise your PC may not be equipped to handle the processing required. Without being at your PC it's hard ot say much, but answer those first two questions and I'll see what I come up with
Bookmarks