I got a small question about my Sony Vegas Pro 9.0. Earlier today I made this video that I first rendered in the "preview tool". It lasted about 2 minutes when I played it in my media player on my computer. I uploaded the video on YouTube and it suddenly appeared as 4 minutes in length instead of 2 in the player window, because apparently it starts over again once it's supposed to be done. I tried uploading it several times, but it's the same thing. I then tried to render it again in SV using "render as" in mp4-format, and I can still see that the video starts over again when it is ment to be done. What have I done wrong? Is there some repeat-button I've accidentally clicked on?
Thanks in advance