30 fps

That 0.03 shortfall is a leftover from the arrival of colour on NTSC television, and it is the reason timecode there needs drop frame counting to stay honest against the clock. On 50Hz mains, 25 fps fills the same role. The look sits between the slight strobe of 24 and the smooth, live feel of 60, which suits pieces to camera, tutorials and anything built around talking. Match it to your lighting. Shooting 30 under 50Hz mains lights can produce a rolling flicker band unless the fixtures are flicker-free or you set a shutter that divides cleanly into the mains frequency.