Script writting info i just found out

ive just read a article on how to produce a professional short script, in the article it explained that for roughly one minute of on scene footage there should be a pages worth of script written, this means that i have to start writting in more detail every aspect of what is going to happen, who is saying what, where they are going to be standing, the angles there going to be standing, how everything within the shot can effect the outcome of the next shot