In general the dealers want a fast throw. Taking time to set the dice slows the game, so they mostly do not like it, but may not say anything if you do not take too much time doing it. The video you saw is of a system the casinos are well aware of, and if you consistently set and throw the dice in that manner, you will get a comment from the crew, most likely.
It is NOT cheating, and as long as you throw against the wall, this is a valid throw. If you fail to hit the wall, the throw can be negated and you can be made to throw again. Do it a couple more times, and they may make you pass the dice and you might get skipped for the next roll. They may even ask you to leave the table, or the casino.
This system involves trying to make the dice land on the number you set, and the casino wants to see the dice bounce off the wall and tumble, to get a fair throw.
When I play, I will always set the dice on the table to the number I wish to throw, this takes only a second. Then I move my hand away for a millisecond to display the dice, open palm up, then swoop them up, swirl once and throw them in one movement against the opposite wall. I try to make the throw go a bit higher than the table wall height, bounce on the table and then hit the wall.
No one has ever complained about this, as long as I hit the wall each time.
I also use the Calculated Craps method to bet, it seems to work for me. Here is a link:
http://www.thedoverpro.com/craps.htm
Also, I always am sure to tip by putting a bet on the pass line for the crew before I start throwing. This makes them both happy and a bit more tolerant of me! lol