Adding Special Effects to Gameplay Video

Hello all,

I played a game and screencasted it. Now I’d like to add some nice effects with the compositor and the vse.
I have a scene where my hero fires an arrow. I want to add a “shining star” on the tip of the arrow. Here is an example how it should look like: have modeled, animated and rendered the star with lens flares in a mpeg file. I also cut the scene where I want to add this effect and
saved it in a seperate file.
How do I combine these 2 videos in the compositor so that the star is exactly on the projectile?
Thanks for your efforts.

Use the Movie Clip Editor to track the tip of the arrow. You can use this information to place the star on top of the clip. There are many tutorials on line for this sort of thing.