Well, with modern TVs at least the PAL versus NTSC question no longer exists, but do you really have an analogue video source? I can't think of anything video I encounter nowadays that is analogue. The Amiga Video Toaster really does only one thing that is hard to do in current technology, that is to insert characters in a live analogue video stream. Everything else is far better and faster on a modern computer.
I love the Amiga for it's retro feel but let's not delude ourselves, the world has come a long way in a decade and a half.