[Mac Lad]

Solution;

Removing if (m.key(n).time > time) n–; works for me

Final working expression

m = thisComp.layer("Action").marker;
n = 1;
if (m.numKeys > 1){
n = m.nearestKey(time).index;
}
if (n > 1){
t = m.key(n).time-.5;
time - t ;
}else
0

[Mac Lad]

In case if it helps here is ae file that can help to understand my problem

Simple-Transition-file.aep 136 KB After Effects Project Files - Click to view

• Copy Download Link

[Mac Lad]

hey, thanks for reply but I have already tried it and it does not works ..it does slides the transition .5 earlier but trims the start of the transition by .5

[Mac Lad]

some modifications and it worked ..thanks a lot!!

[Mac Lad]

Thanks Dan, that works!!! Didn’t knew I can use .length in split …thanks!!!

[Mac Lad]

Thanks Dan for explaining.

[Mac Lad]

It works…Thank you Dan. Is it possible to explain what does t = n%2 ? dur – time%dur : time%dur; does here

[Mac Lad]

Thank you so much!!! that really helps man…I am new to scripting and especially new to “toWorld” expression. Made a few tweaks on my side to work as I needed. Final expression is bellow

L = thisComp.layer("bar");
r = L.sourceRectAtTime(time,false);
s=L.toWorld([r.width/2,r.top]);
[value[0],s[1]];

[Mac Lad]

This Works Man !!! Thanks a ton

[Mac Lad]

Thank You, Dan…! Some changes to expression, made it worked as I needed
But still, don’t understand why we use “txt+=”.
Below is the changed Expression
var txt= “”;
var i;
var a=5
for (i=0; i<=a; i++) {
txt += “n=” + i + “\n”;
}
txt