Yes. And no. You can fit any timeline with whatever you want, but, obviously, a timeline has its own framerate. So, you can add a 29.97fps clip to a 23.976 timeline, but then you have to choose do you want to keep the 29.97fps clip running at its original “clock time”, by timewarping it 125%, or, play it at 23.976, and it effectively runs slow?
Sure thing. Theres a preference somewhere in Flame / Preferences, I think its called “Auto Timewarp” and it automagically assigns the right timewarp for you…so, I 24fps going into 25 does a 96% (or is it 104%?), a 24 to 30 does an 80%,etc…