I know that this is an ancient thread but I felt like sharing that all Umemaro products seem to hate Windows 10. In my case they'll run once but after trying to make it go full screen and back on my 4k monitor the videos utterly fail to reload. I've tried every troubleshooting tip I could find.
1) Run in compatibility settings with 8 bit colors
2) Download a bunch of codecs and other stuff that's supposed to make this product compatible
3) Reinstall the game folder and re-running it 17 billion times.
Etc.
I don't know how this movie UI was coded but it's clearly from some kind of horrifically ancient dark ages. In the end, all I could do was to use
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to run it (via a shared folder) on a virtual version of Windows XP (easy to find; Microsoft officially
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at this point in its age).
Only then do any of Umemaro's work finally work. I'm disappointed in this in it's programming. =/
Nonetheless the final product is AMAZING though. But yeah. To any reading this, all I can say is get familiar with virtual box (if you're not already) and install this on a VM.