Reproduced 3/3 times, issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression.
I've tried enabling the Media Movie Streamer plugin & Electra Player plugins, but Game crashes the same regardless.
Actual Result: Game freezes on last frame of 1st Movie, then crashes
Expected Result: All Startup Movies should play
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-173500 in the post.