tc ↔ frames ↔ real time, drop frame handled.
tc ↔ frames ↔ real time, drop frame handled.
drop frame skips numbers, not time — frame numbers ;00 and ;01 vanish each minute except every tenth, so 29.97 stays on the clock.
type any of the three — timecode, total frames, or real seconds — and the other two follow. rates run 23.976 through 60, drop and non-drop. it corrects an impossible drop frame value rather than quietly taking it.
drop frame skips numbers, not time: ;00 and ;01 vanish at the top of every minute except every tenth, which keeps 29.97 on the wall clock. non-drop 29.97 and 23.976 do not, and slide about 3.6 seconds an hour.
agree the rate with video and audio in one sentence before anybody stripes anything, and write it on the drive. ltc tops out at 30 fps, so the higher rates here are counting math only.