Canon Rebel SL1 EOS 100D Instruction Manual page 71

Shooting Movies
Connecting the camera to a TV set is recommended to play back the
movies shot (p.262, 265).
When the shooting mode is set to other than <M>, autoexposure
control will take effect to suit the scene's current brightness.
Set the power switch to <_,_, >.
The reflex mirror will make a sound,
then the image will appear on the
LCD monitor.
Set any shooting mode except
<i>.
Recording movie
Microphone
Focus the subject.
Before shooting a movie, focus with
AF or manual focus (p.164-173, 176).
By default, [Movie Servo AF:
Enable] is set so that the camera will
always focus. To stop Movie Servo
AF, see page 207.
Shoot the movie.
Press the <1_11 > button to start
shooting a movie. To stop movie
shooting, press <r_> again.
While the movie is being shot, the
"Q" mark will be displayed on the
upper right of the screen.
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