![]() Television programs commonly run in 30 minute increments, so drop-frame timecode should work in such a way that it is guaranteed to be a correct representation of the running time at least every 30 minutes. Let’s think about how drop-frame timecode works for 29.97. 23.976 drop-frame timecode is not part of the SMPTE timecode spec and most editing programs don’t have a 24p drop-frame option. In NTSC countries, 24p footage actually runs at 23.976 fps. Again, we’re not going to worry about those distinctions here. As with integer division, modulo behaviors vary among programming languages when negative numbers are involved. Most languages use the same % notation for modulo. 30 / 7 is 4 with a remainder of 2, so 30 % 7 would be 2. Modulo refers to the remainder that’s left after division.
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