Start up movies will only play for a second or two and then the level will load.

If you place a mp4 file into the startup movies section of the Project Settings, the movie will only play for a brief time before the level loads.

If you play the play the level with the startup movie in Mobile preview, the movie will fully play in its entirety.

1) Open a new project template ( Any template is fine)
2) Once the project opens, go into the Project Settings under the Edit tab at the top of the editor
3) Find the Movies subsection in the Project Settings.
4) Add a new element to the Startup movies
5) Place the attached movie into the startup movies by browsing for the file (be sure to have the file previously downloaded)
6) Exit the project settings and then save.
7) From the File tab, package the project for Windows (64-bit). This issue also worked with an iPhone 5s OS 7.1
8) Once the project packages, locate the file in your Windows explorer where you packaged the project to.
9) Windows: Open the project by double-clicking the .exe file.