Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 419)

Movie Self-Timer
Movie recording can be started by the self-timer.
1.
Select [ : Movie self-timer].
2.
Select an option.
3.
Record the movie.
After you press the movie shooting button or tap [ ], the camera
displays the number of seconds left before recording and then beeps.
Note
To cancel the self-timer, either tap the screen or press the < > button.
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