AfterEffectsでiPhone用アニメーションイメージ生成

Movie2CombinedImage_forAE.jsx

//created by @swifee
#target "aftereffects"

var activeItem = app.project.activeItem;
if ((activeItem == null) || !(activeItem instanceof CompItem)) {
    alert("コンポジションを選択した状態でスクリプトを実行して下さい。");
}else{
    var comp_x = activeItem.width;
    var comp_y = activeItem.height;
    var comp_fDur = activeItem.frameDuration;
    var comp_dur = activeItem.duration/comp_fDur;
    
    var newComp = app.project.items.addComp("CombinedImage", comp_x, comp_y*comp_dur, 1, 1, 1);
    
    var t;
    for(i=0;i<comp_dur;i++){
        t = newComp.layers.add(activeItem);

        t.anchorPoint.setValue([0, 0, 0]);
        t.position.setValue([0, comp_y*i, 0]);
        t.timeRemapEnabled = true;
        t.timeRemap.setValueAtTime(0, i*comp_fDur);
    }
}