Samsung SM-A405FN/DS User Manual page 72

Apps and features
Slow motion mode (Galaxy A40)
Record a video for viewing it in slow motion. You can specify sections of your videos to be
played in slow motion.
On the shooting modes list, tap MORE → SLOW MOTION.
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Tap to start recording.
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When you are finished recording, tap
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On the preview screen, tap the preview thumbnail.
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Tap Play slow motion video.
The fastest section of the video will be set as a slow motion section and the video will
start playing. Up to two slow motion sections will be created based on the video.
To edit the slow motion section, drag the section editing bar to the left or right.
Start bracket
to stop.
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Section editing bar
End bracket