After Effects│複数の動画素材を個別にレンダリングする方法

(function () {
    if (!app.project) { alert("Open a saved practice project first."); return; }
    var selected = app.project.selection.slice(0);
    var valid = [], skipped = 0, made = 0;
    for (var i = 0; i < selected.length; i++) {
        var x = selected[i];
        if (!(x instanceof FootageItem) || !x.hasVideo || x.mainSource.isStill ||
            x.footageMissing || !isFinite(x.width) || Math.floor(x.width) != x.width || x.width < 4 || x.width > 30000 ||
            !isFinite(x.height) || Math.floor(x.height) != x.height || x.height < 4 || x.height > 30000 ||
            !isFinite(x.duration) || x.duration <= 0 || x.duration > 10800 ||
            !isFinite(x.frameRate) || x.frameRate < 1 || x.frameRate > 99 ||
            !isFinite(x.pixelAspect) || x.pixelAspect < 0.01 || x.pixelAspect > 100) {
            skipped++; continue;
        }
        valid.push(x);
    }
    if (!valid.length) { alert("No supported moving-image footage selected."); return; }
    app.beginUndoGroup("Create selected video compositions");
    try {
        for (var j = 0; j < valid.length; j++) {
            var item = valid[j];
            var comp = app.project.items.addComp(item.name, item.width, item.height,
                item.pixelAspect, item.duration, item.frameRate);
            comp.layers.add(item);
            made++;
        }
        alert("Created: " + made + ", skipped: " + skipped);
    } catch (e) {
        alert("Stopped after " + made + " completed items: " + e.toString() +
            "\nUndo this group or reopen your saved practice copy.");
    } finally { app.endUndoGroup(); }
}());

(function () {
    if (!app.project) { alert("Open a saved practice project first."); return; }
    var queue = app.project.renderQueue;
    if (queue.rendering) { alert("Stop rendering before adding items."); return; }
    var selected = app.project.selection.slice(0), comps = [];
    for (var i = 0; i < selected.length; i++) {
        if (selected[i] instanceof CompItem) { comps.push(selected[i]); }
    }
    if (!comps.length) { alert("Select compositions in the Project panel."); return; }
    var added = 0;
    try {
        for (var j = 0; j < comps.length; j++) {
            var item = queue.items.add(comps[j]);
            item.render = false;
            added++;
        }
        alert("Added, not enabled for rendering: " + added +
            "\nSet unique outputs and formats, then enable only the intended items.");
    } catch (e) {
        alert("Stopped after " + added + " items: " + e.toString() +
            "\nInspect the practice queue; no render was started.");
    }
}());