How to use MarkerKey to control the start time and end time

[youkaze]

This is the example here：

I want to know how to make the same effect like this example, dragging the IN tag on the diagram to change the duration of the effect, there is a keyframe and eval expression on time remap, but I can't understand the expressions in the example cause they are messy code.

[zlovatt]

Check this out: http://www.motionscript.com/design-guid ... -sync.html

[youkaze]

Check this out: http://www.motionscript.com/design-guid ... -sync.html

thank you, I have already solved this problem with this solution.

time =thisComp.duration

linear(time, inPoint, marker.key(1).time, 0, 1) - linear(time, marker.key(2).time, outPoint, 0, 1)