The problem with that idea is that you can’t go from 1 to 5 (for instance) with a slider without going through 2, 3 and 4 in between.
Perhaps hold keyframes would work. If the transitions between states are the same length in time (X frames), a loop backwards X frames to see if the value of the slider was different during that time and basing the position on the time progress from that point (current time minus X frames to current time, and where the change happened within that time frame) to interpolate between the two keyframe positions in question.
If the timing needs to vary, a second slider could conceivably be used to vary the transition time. Should work as long as the motions don’t overlap.
Kalleheikki Kannisto
Senior Graphic Designer