Hi CountMRVHS,
Sadly, this CTD is a frequent occurance in my game too - I think it may be related to taking the city of Rome. However, playing it again always, oddly, fixes it for me. If this tactic doesn't succeed, then, fortunately, you can easily watch the victory video outside of the game.
You can take this measure by simply entering your "C:\Program Files\The Creative Assembly\Rome - Total War\data\fmvs\win" folder, if you have Gold, or "C:\Program Files\Activision\Rome - Total War\data\fmvs\win" if you don't. Sadly, though, I may have got this path wrong since I haven't got R:TW installed to check it. Luckily, though, a quick Windows search for "fmvs" should yield the required results.
Once you are in the "win" folder, you can easily click on any video which you want to watch and see it's beauty. Hope this helps, enjoy the videos, cheers!
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