Win98, it looks like this is anything but "easy street." It's got me totally stumped. Even the fact that it's on Youtube...not helping at all, considering there's no search advanced enough to sort by length (yes, I tried :o hax).
The fact that it's a FMV cutscene hurts, because it's hard to tell what era the in-game graphics are from.
Could it be Daggerfall or Elder Scrolls: Arena? Random guess...