This video is solid gold, like most of Mr. Eckerts videos!
I can make a brief summary of what he is saying (key points only, rough summary). If you have a specific section you'd like me to translate word for word, I can do that as well (keep in mind that neither German, nor English is my arterial language,so some slight mistakes are likely). I've structured my eplaination differently than his for the sake of brevity:
The main theme of his video is the standard breakshot (with the object ball close to the side of the rack) and how to determine and control where the cue ball is going on these shots.
1: When the cueball strikes the object ball it travels along the tangent line towards the rack. The closer you are to the rack, the less chance you have to alter this path.
2:. The side of the rack is divided into pairs of object balls with the crack between them as the center.
3. Using high/low/left/right has less influence on the cueballs path on these side breakshots than which object ball in a pair is hit first.
4. Depending on which ball is struck first in such a pair, the cueball will move in three different "general directions" or "basic directions".
5. When hitting the ball below the crack first, the cueball will generally travel upwards towards the end rail.You have two possibilities:
A:You can use low, making sure to have enough speed to go to the end rail and back out.
B: You can use high to keep the cueball from going up, thereby keeping the cueball down table. He explains that he does not use a lot of high, but you can travel more down/sideways with more high. In his example he states he used a bit too much and got stuck, but did get a shot.
6. When hitting a ball full the cueball will generally travel towards the middle of the lower side rail/side pocket area. This is a bit more difficult to control exactly. He generally hits these with stun.
7. When hitting the ball above the crack first, the cueball will generally travel downwards to the head rail/corner
When you have a severe angle you have two options:
A: You can use high and hit the head rail, bending the ball forward from the general direction.
B: You can use low and hit the side rail above the pocket. He explains that you can also use sidespin to control the cueball in this case, though he doesn't in his example.
When you have a flat angle (less than perpendicular) you can only use low, since the forward spin won't be effective enough in bending the cueball path and hit the end rail.
(8. "Translators note" :Whenever he says "Basisrichtung", he is referring to the basic direction or general direction)
Hope this helps. Native German speakers are welcome- and encouraged to correct any mistakes.