Since I moved my trackpoints I got this jumps where the line of a trackpoint jumps from the red to the green curve(and the other way around). This happened to points that I moved, so maybe that's the reason. Is there a simple solution, or do I have to replace all these trackpoints?
see blender.stackexchange.com/questions/14330/… – cegaton 56 mins ago
So my answer is solved now I think. After reading this I know, that the "jumps" the lines are doing are caused by moving them. Because if you move one its speed increases immensely. And if the lines indicate the speed of a tracker, they will go up too. That's causing the jumps.
The other points where the red and the green line is connected. A new Trackpoint was created.
You need to track those markers again, and then resolve the camera motion. To do this, go to the "Motion Tracking" prespective, by chosing it from this menu:
Then select the markers that need to be tracked, open the Toolshelf (press T) and go to the subsection "Track" and click the track button, as shown here: