Fader; Voice - Samsung NX1000 User Manual

You can fade in or fade out a scene using the fader function on the
camera without having to do it on a PC. Use the function appropriately
and add dramatic effects on your videos.
Sometimes, a muted video is more appealing than the one with sound.
Turn the voice off to record a muted video.
_r_OFF Off: Fader function not used.
In: Scene gradually fades in.
Out: Scene gradually fades out.
In-out: The fader function is applied at the start and end of the
scene,