NTSC and PAL are SD analogue broadcast standards - it's mostly just convenience that has seen the abbreviations carry forward into digital systems.

We're still stuck with different broadcast frame rates in different countries, but European TVs have been coping with NTSC signals for years. Someone in another thread said the inverse isn't necessarily true, which is pretty stupid.

There's very little point doing a "PAL" conversion of an "NTSC" project, because a) it's hard to do well and b) we can all play NTSC anyway, even with quite an old CRT screen. And there's little point doing an HD up-conversion for the reasons I've already outlined above.

DE