Last time I had to do this, I found it easier, quicker and more precise to do it in After Effects.
If you have access to After Effects. Try this.
Create a text layer, and option-click on the “Source Text” option to open the script window. Paste this script.
rate = -1;
clockStart = 3600;
function padZero(n){
if (n < 10) return “0” + n else return “” + n
}
clockTime = clockStart + rate*(time – inPoint);
if (clockTime < 0){
sign = “-“;
clockTime = -clockTime;
}else{
sign = “”;
}
t = Math.floor(clockTime);
min = Math.floor((t%3600)/60);
sec = Math.floor(t%60);
ms = clockTime.toFixed(2).substr(-2);
sign + padZero(min) + “:” + padZero(sec)
Richard Sanchez
Los Angeles, CA
“We are the facilitators of our own creative evolution.” – Bill Hicks