Intro einfügen

#target aftereffects
var mainComp = app.project.activeItem;

function MainSetup() {
    if (mainComp == null || !(mainComp instanceof CompItem)) {
        alert("No Comp selected");
        return;
    }

    InsertIntro(); //Fügt das Intro ein, und schneidet alles passend

    SelectMainComp();
    DeleteKeysOnOtherLayers(); //Löscht alle Marker auf allen anderen als der oberen ebene. Dies bringt rein der übersicht etwas, da sonst hunderte marker angezeigt werden mit der zeit
}

function DeleteKeysOnOtherLayers() {
    var ignoreLayer = GetTopMostLayer("premComp").index;
    for(var i = 1; i <= mainComp.layers.length; i++) {
        if(i !== ignoreLayer && mainComp.layers[i].name == "premComp") {
            for(var j = mainComp.layers[i].marker.numKeys; j >= 1; j--) {
                mainComp.layers[i].marker.removeKey(j);
            }
        }
    }
}

function GetTopMostLayer(startOfName) {
    for (var i = 1; i <= mainComp.layers.length; i++) {
        if (mainComp.layers[i].name.substring(0, startOfName.length) == startOfName) {
            return mainComp.layers[i];
        }
    }
    return null;
}

function GetTopMostActiveLayer(startOfName) {
    for (var i = 1; i <= mainComp.layers.length; i++) {
        if (mainComp.layers[i].active && mainComp.layers[i].name.substring(0, startOfName.length) == startOfName) {
            return mainComp.layers[i];
        }
    }
    return null;
}

function InsertFootage(comp, name) {
    var layer = comp.layers.add(GetFootageByName(name));
    layer.startTime = comp.time;
}

function InsertIntro(name) {

    var newPremLayer = GetTopMostActiveLayer("premComp");

    var curInpoint = newPremLayer.inPoint;
    var curOutpoint = newPremLayer.outPoint;
    var curStarttime = newPremLayer.startTime;

    newPremLayer.startTime = 0;

    newPremLayer.inPoint = newPremLayer.inPoint + (mainComp.time - curInpoint) - 1;

    newPremLayer.startTime = curStarttime - (mainComp.time - curInpoint) + 6;

    mainComp.time = curInpoint;

    InsertFootage(mainComp, "intro.avi");
}

function GetFootageByName(name) {
    for (var i = 1; i <= app.project.items.length; i++) {
        if (app.project.items[i].name == name) {
            return app.project.items[i];
        }
    }
    return null;
}

function SelectMainComp() {
    for (var i = 1; i <= app.project.items.length; i++) {
        if(app.project.items[i] !== mainComp)
            app.project.items[i].selected = false;
        else
            mainComp.selected = true;
    }
}

app.beginUndoGroup("Youtube - Insert Intro");
MainSetup();
app.endUndoGroup();