Startup movies on Gear vr?

Who know the correct method to display the startup movies On Gear Vr. Generally ,the startup movies only display during engine initialization, but you know,at this moment, the Gear VR pluging is not initialed yet , So the Gear VR’s Loading-Icon Mode can’t work yet, that’s mean these movies can’t rendered in stereo mode. Or remove these movies,then the program will stay in a dark screen for a long while. I don’t think the both can be accepted by oculus. Any ideas?