Apple Final Cut Pro 6 - Manual (Page 1149)

364 Part II Effects
To see how speed settings affect the timecode view, try the following:
1 Open a clip in the Viewer.
2 Choose Modify > Speed (or press Command-J).
3 Type “25” in the Speed field, then click OK.
The clip now plays back frames from the media file at 25 percent speed. The source
timecode plays back just as slowly.
4 In the Viewer, move through the clip one frame at a time using the Left and Right
Arrow keys.
Note that the timecode numbers change once every four frames. This is because the
speed-adjusted clip holds each video frame for a duration of four frames, and the
native timecode numbers are displayed. The video frames and the timecode numbers
change only every fourth frame when viewed in the speed-adjusted clip.
5 Control-click the Current Timecode field, then choose View Native Speed from the
shortcut menu to deselect it.
Note: When View Native Speed is deselected, the timecode field is no longer italicized.
6 In the Viewer, move through the clip one frame at a time using the Left and Right
Arrow keys.
Final Cut Pro now increments the timecode at the frame rate of the clip, ignoring any
speed adjustments. This timecode is not accurate to the timecode of the media file, but
it allows you to see the timecode counter increment each time you advance a frame.
If you want to see the actual source timecode of each frame of the media file, leave
View Native Speed selected.