Emulator

Yeah, the entire thing is a mess. I think what we're doing now is the best possible "easy" solution in that it will work with the least amount of work for the most usecases. TASers don't like using "dirty" saves anyway in most cases. They'll actually do a verification movie that plays up until a new-game plus run in most cases too. That would get around Dolphin's problem.

The bigger issue is that project moration actually breaks some games on netplay, and I wonder if that carries over into movie recording.

Not a full solution (doesn't allow using the full NAND), but an improvement in functionality regardless: https://github.com/dolphin-emu/dolphin/pull/4546

That got merged in 5.0-2413, so save files for the initially booted game can now be used.

This issue is now tracking the ability to use a whole NAND if desired.