I have a problem I can not define in one word. So I can't Google it properly.
I edit and upload my .mp4 videos to my website which has flowplayer. But when I want to watch them, I need to wait for the video to be fully loaded. But I want them to start right away. Which setting do I need to choose before I render them in Vegas?

I used to do this with visualhub on my mac but there was not a special setting. Choosing .mp4 format was enough.