简单测试案例运行后无响应，求解答

[wxbool]

const path = require('path');
const colors = require('colors');
const { FFCreatorCenter, FFScene, FFImage, FFCreator } = require('ffcreator');

const img1 = path.join(__dirname , './data/img/01.jpg');
const img2 = path.join(__dirname , './data/img/02.jpg');
const img3 = path.join(__dirname , './data/img/03.jpg');

const tts1 = path.join(__dirname , './data/audio/1.wav');
const tts2 = path.join(__dirname , './data/audio/2.wav');
const tts3 = path.join(__dirname , './data/audio/3.wav');

const outputDir = path.join(__dirname, './output/');
const cacheDir = path.join(__dirname, './cache/');

// create creator instance
const width = 576;
const height = 1024;
const creator = new FFCreator({
    cacheDir,
    outputDir,
    // cover,
    width,
    height,
    //log: true,
    highWaterMark: '3mb',
    parallel: 8,
    // audio,
    // render:"blur",
});

// create FFScene
const scene1 = new FFScene();
const scene2 = new FFScene();
const scene3 = new FFScene();

let img1Obj = new FFImage({ path: img1, x: 0 , y:0});
// img1Obj.addEffect('fadeInDown', 1, 1.2);
img1Obj.setDuration(5);
scene1.addChild(img1Obj);
scene1.setTransition('TricolorCircle' , 1)
// scene1.setDuration(5)

let img2Obj = new FFImage({ path: img2, x: 0 , y:0});
// img2Obj.addEffect('fadeInDown', 1, 1.2);
img2Obj.setDuration(6);
scene2.addChild(img2Obj);
scene2.setTransition('HangAround' , 1)
// scene2.setDuration(5)

let img3Obj = new FFImage({ path: img3, x: 0 , y:0});
// img3Obj.addEffect('fadeInDown', 1, 1.2);
img3Obj.setDuration(4);
scene3.addChild(img3Obj);
scene3.setTransition('HangAround' , 1)
// scene3.setDuration(4)

creator.addChild(scene1)
creator.addChild(scene2)
creator.addChild(scene3)

//启动
creator.start();
creator.openLog();

creator.on('start', () => {
    console.log(`FFCreator start`);
});

creator.on('error', e => {
    console.log(colors.red(`FFCreator error: ${e.error}`));
});

creator.on('progress', e => {
    console.log(colors.yellow(`FFCreator progress: ${(e.percent * 100) >> 0}%`));
});

creator.on('complete', e => {
    console.log(e)
    console.log(
        colors.magenta(`FFCreator completed: \n USEAGE: ${e.useage} \n PATH: ${e.output} `),
    );
});

以上代码通过 node test.js 运行后无结果响应，仅输出：

FFCreator start

如果将代码中的 第2、3场景注释掉，仅保留一个场景，就可以正常输出视频。

// creator.addChild(scene2)
// creator.addChild(scene3)

素材是没有问题的，但是不知道什么原因，很奇怪。 求解答，感谢！

运行环境： node v14.17.1 windows 10 专业版