Applying a scale change through scripting

[richard_ikosoft]

Hi,

I'm trying to get to grips with JavaScripting on Premiere Pro CC 12 and my first task is to apply a scale change to a series of videos which runs for the first second scaling from 100 to 200 and then for another second scaling from 200 to 300. It seems as though everything is being correctly set when debugging the script but in the project window the keys I've made are not showing up and the final scaling is applied from time 0 so the end effect is that it's full size from the outset.

what am I missing?

TIA

Richard

var proj = app.project;

var seq = proj.activeSequence;

var time = seq.getPlayerPosition();         // CTI = Current Time Indicator.

var time2 = seq.getPlayerPosition();

var time3 = seq.getPlayerPosition();

time2.seconds += 1;

time3.seconds += 2;

var videoTracks = seq.videoTracks;

for (var i = 0; i < videoTracks.numTracks; i++) {

var track = videoTracks;

for (var j = 0; j < track.clips.numItems; j++) {

var clip = track.clips;

if (clip.name == "Rectangle 720 576.png") {

for (var k = 0; k < clip.components.numItems; k++) {

var component = clip.components;

if (component.displayName == "Trajectoire") {       // Trajectory

for (var l = 0; l < component.properties.numItems; l++) {

var property = component.properties;

if (property.displayName == "Echelle") {        // Scale

if (!property.isTimeVarying()) {

property.setTimeVarying(true);

}

property.addKey(time);

property.addKey(time2);

property.addKey(time3);

var k = property.getKeys();

if (property.areKeyframesSupported() == true) {

var result = property.getValueAtKey(time);

property.setValueAtKey(time, 100, true);

property.setValueAtKey(time2, 200, true);

property.setValueAtKey(time3, 300, true);

}

}

}

}

}

}

}

}

[Jim_Simon]

This might be better asked in the SDK forum.  You're more likely to find programming folks there.

[richard_ikosoft]

Is it possible to get it moved or should I just repost?

[Justin T - Hyper Brew · Accepted solution]

Working fine for me when changing to Motion > Scale. Is that the same effect, just in a different app language? What is the timecode of your project?

var proj = app.project;
var seq = proj.activeSequence;
var time = seq.getPlayerPosition(); // CTI = Current Time Indicator.
var time2 = seq.getPlayerPosition();
var time3 = seq.getPlayerPosition();

time2.seconds += 1;
time3.seconds += 2;

var videoTracks = seq.videoTracks;

for (var i = 0; i < videoTracks.numTracks; i++) {
  var track = videoTracks;

  for (var j = 0; j < track.clips.numItems; j++) {
    var clip = track.clips;

    if (clip.name == "Rectangle 720 576.png") {
      for (var k = 0; k < clip.components.numItems; k++) {
        var component = clip.components;

        if (component.displayName == "Motion") {
          // Trajectory

          for (var l = 0; l < component.properties.numItems; l++) {
            var property = component.properties;

            if (property.displayName == "Scale") {
              // Scale

              if (!property.isTimeVarying()) {
                property.setTimeVarying(true);
              }

              property.addKey(time);
              property.addKey(time2);
              property.addKey(time3);
              var k = property.getKeys();

              if (property.areKeyframesSupported() == true) {
                var result = property.getValueAtKey(time);
                property.setValueAtKey(time, 100, true);
                property.setValueAtKey(time2, 200, true);
                property.setValueAtKey(time3, 300, true);
              }
            }
          }
        }
      }
    }
  }
}

You could remove a few loops if you are trying to change the Scale, since the Motion effect is on every video clip in Premiere and Scale is always at the same index on all clips:

clip.components[1].properties[1]; // Scale

[Евгений23717184utxk]

I mean... you use collections instead of collection elements. There's a reason why you have those 'for' loops.

...

var track = videoTracks;  -->  var track = videoTracks[i];

...

var clip = track.clips;  -->   var clip = track.clips[j];

...

var component = clip.components;  -->  var component = clip.components[k];

...

var property = component.properties;  --> var property = component.properties[l];

...

etc