Hmm, okay, I've tried adding custom resolutions for 640x480 with 8-bit, 16-bit, and 32-bit color, but it still crashes (in fact, when I set the custom resolution to 8-bit color, it actually crashed at the Obsidian video instead of after it). I can set the refresh rate; I tried 60 Hz, but would something else be better for these .bik movies? There's another setting for "Timing Standards" with the options "GTF", "CVT", and "CVT-RB"; the default is "GTF." Should I mess with those? Should I mess with another setting for "Underscan Percentage"?
(Thank you for your feedback, this has been very helpful already!)