Nikon D3300 Reference Manual page 58

4
Start recording.
Press the movie-record button to start
recording. A recording indicator and
the time available are displayed in the
monitor.
5
End recording.
Press the movie-record button again
to end recording. Press the a button
to exit live view.
A
Recording Movies
See page 155 for more information on recording movies.
38 "Point-and-Shoot" Modes (i and j)
Movie-record button
Recording indicator
Time remaining