Nikon D780 Reference Manual page 320

5
Confirm the new start point.
If the desired frame is not currently
displayed, press 4 or 2 to advance
or rewind (to skip to 10 s ahead or
back, rotate the main command dial;
to skip to the first or last frame, rotate
the sub-command dial).
6
Choose the end point.
Press Q / g ( U ) to switch from the
start point ( w ) to the end point ( x )
selection tool and then select the
closing frame as described in Step 5.
The frames after the selected frame
will be removed when you save the copy in Step 10.
7
Create the copy.
Once the desired closing frame is displayed, press 1 .
274 Options for Movie Recording and Editing