I can't find reverse and loop options in my S9+

[Aimroch]

I can't find reverse and loop options for video on my S9+. Also, when I swipe from regular pic to slow motion, the frame suddenly gets super dark and grainy.

 

[UdiBerry]

Reverse and Loop only works with Super Slow-Mo.
Open the video in the gallery, tap the three dots on the top right and tap Details.

 

[UdiBerry]

Re the grainy frame in SSM, you need to be in a well lit area and remember that the resolution is only 720p.