Controlling Time Indicator with a slider

[Dan Ebberts]

>Is this possible?

It should be. Just turn on time remapping for the video layer and use an expression to link the video time to the slider. Time remapping expects a value in seconds, so you need to do whatever math is necessary to convert the slider value to the desired video time in seconds. Shouldn’t be too tough.

Dan

[Glenn Tak]

Well I’ve managed to get the slider to control the Time Remapped movie in a comp which works great if you have the Time Indicator placed at the last frame. But if you move the time indicator it changes the effect of the slider.

And if you use this movie comp as a precomp in another comp then the Time indicator moves according to the Time indicator in the master comp and that changes the position of the Remap… which effects the relationship to the slider numbers.

I suspect I need some line of code that tells the slider expression to always start from frame 0 of the comp no matter where the time indicator is.

I have copied the expression I am using below. Any thoughts?

spd = thisComp.layer("MOVIE SLIDER").effect("Slider Control")("Slider")
n = spd.numKeys;
if (n > 0 && spd.key(1).time < time){
accum = spd.key(1).value*(spd.key(1).time - inPoint);
for (i = 2; i <= n; i++){
if (spd.key(i).time > time) break;
k1 = spd.key(i-1);
k2 = spd.key(i);
v2 = spd.valueAtTime(k2.time-.001);
accum += (k1.value + v2)*(k2.time - k1.time)/2;
}
accum += (spd.value + spd.key(i-1).value)*(time - spd.key(i-1).time)/2;
}else{
accum = spd.value*(time - inPoint);
}
accum/100


______________________

“Nothing is Easy”
Jethro Tull