The S-350 has three missiles it uses, two versions of the 9M96 and a smaller missile called 9M100.
The 9M96 is designed to fit four tubes into the space of one S-300 missile, but on the S-350 all the tubes are the size of the 9M96.
This means that the S-350 can carry 12 9M96 missiles in its 12 tubes, or it can carry 48 9M100 missiles in its 12 tubes (4 missiles in each tube).
That video was talking about the middle sized missile of the S-350 system which I describe above as having a range of 50km.
The bigger 9M96 missile has a range of 150km, though if the smaller missile has a range of 60km perhaps the bigger missile is a 160km range weapon.
When first revealed the smaller missile was described as having a range of 40km and the larger missile 120km.
Note these missiles are intended to replace early model S-300s in the Russian inventory with ranges of about 90km so these new missiles are much more capable.
This is what redut VLS should have been instead of the 8 cells that are way too big for 9M96 and unable to hold 48N6. Gordhkov would be holding 48 missiles right now while Steregoutchy could have 24.
Redut is a ship based system... these land based S-350 systems will likely be based with S-400 systems to fill out numbers so they don't need the bigger missiles.
The naval systems need to be able to use the full sized S-400 missiles in the 250km and 400km flight range sizes. Each tube can either take a 400km or 250km range S-400 missile or 4 x S-350 missile of either 60km or 160km range, or 16 missiles of the 9M100 type that are short range CIWS type missiles.