Movie won't play when the game launches?

I want a short video to play when the game launches before being taken to the main menu screen. In the project settings > movies section, I have a movie placed there with 1 array element. I also have the “wait” box checked. The movie still does not play when I start the game though, even with the “launch” option. Am I doing something wrong? Thanks.

The movie must be placed in your project folder (using your file explorer) under Content/Movies and the movie file must be an mp4 encoded with .h264, and there are some other constraints too.
Check the unreal documentation web page about Startup Movies for more info.
If you get one of the requirements wrong then it will just skip your movie like it doesnt exist.