The MIDI standard supports four of the seven commonly used timecode formats: the 30 fps and 29.97 fps (frames per second) formats are not differentiated in the MIDI specification.
Logic Pro X needs to determine the intended format of incoming MTC (MIDI Time Code) and interprets it as follows:
23.976 fps is interpreted as 24 fps.
24 fps is interpreted as 24 fps.
25 fps is interpreted as 25 fps.
29.97 fps is interpreted as 29.97 fps.
29.97 fps drop frame is interpreted as 29.97 drop fps.
30 fps drop frame is interpreted as 29.97 drop fps.
30 fps is interpreted as 29.97 fps.
Note: MIDI Time Code (MTC) is the MIDI equivalent of the audio-based SMPTE (Society of Motion Picture and Television Engineers) timecode format.
Manually set a frame rate
Choose a frame rate in the File > Project Settings > Synchronization > General > Frame Rate pop-up menu. This setting overrides the automatic detection and interpretation of frame rates.