You need at least 10 seconds. Change the 00:00:00:00 timecode to 00:00:10:00 and you should be good to go. You probably have a 3 second preroll and then add a second or two for handles and a few seconds are needed for slop.
hey man i found this because i was looking for the same answers. Try a quick forum search before you post next time because sometimes your problem will have already been answered.
Have a good
james