 uneven number
It should be noted that 23.98 (or 23.976, depending on what manufacturer it is) has no drop-frame option because of the integer number of frames.
At 29.97 non-drop timecode, there are 107,892 frames in an hour. At 29.97, you lose .03 frames per second in your count, which equates to 108 lost frames in an hour. If you drop frames on every minute except the 10th, you drop 2 frames * 54 minutes = 108 frames. The difference in the number of frames over the course of an hour between non-drop and drop frame timecode (108) is an whole number which makes the impementation of dropped frames practical in that it can represent clock time.
At 24fps timecode, there are 86,400 frames in an hour. At 23.98(.976) timecode, there are 86,313.6 frames in an hour. The difference here is 87 frames (rounding down) or 88 frames (rounding up). The point is there is rounding involved, so there is no whole number relationship, thus negating the ability to drop frames and get an accurate clock time on the content. If anyone says they are working at 24 drop, they are not correct. |