Agfdhyk

I am call three block inside aws lambda function so there i want to execute call code block one by one means should be wait executetion time
can see my code

in this i have mentioned first block, second block and third block
i want to execute my first block code after that run second block and then third block should be execute.

I never want to use setTimeout function, i think this is not correct.

'use strict';



const ffmpeg = require("fluent-ffmpeg");



const finalVideoPath = __dirname + "/bin/video.mp4";



const margeVideoPath = __dirname + "/video/videofinal.mp4";



const Jimp = require("jimp");



const frames = [



  __dirname + "/images/FullSizeRender-1.jpg",

  __dirname + "/images/FullSizeRender-2.jpg",

  __dirname + "/images/FullSizeRender-3.jpg",

 __dirname + "/images/FullSizeRender-4.jpg",

 __dirname + "/images/FullSizeRender-5.jpg",

 __dirname + "/images/FullSizeRender-6.jpg",

 __dirname + "/images/FullSizeRender-7.jpg",

 __dirname + "/images/FullSizeRender-8.jpg",

 __dirname + "/images/FullSizeRender-9.jpg",

 __dirname + "/images/FullSizeRender-10.jpg",

 __dirname + "/images/FullSizeRender-11.jpg",

 __dirname + "/images/FullSizeRender-12.jpg",

 __dirname + "/images/FullSizeRender-13.jpg",

 __dirname + "/images/FullSizeRender-14.jpg",

 __dirname + "/images/FullSizeRender-15.jpg",

 __dirname + "/images/FullSizeRender-16.jpg",



];



 module.exports.hello = async function



(event, context, callback) {

 return new Promise(function (resolve, reject) {









/* First block*/

//resize images

frames.forEach(element => {

  Jimp.read(element, (err, lenna) => {

    if (err) console.log('error', err);

    lenna

      .resize(1000, 1000) // resize

      .quality(10) // set JPEG quality

      .write(element); // save

  });

  console.log('resize');

});





/* second block*/ 

//create video

setTimeout(() => {

ffmpeg().addInput(__dirname + "/images/FullSizeRender-%1d.jpg")

  .complexFilter([{

    filter: "zoompan",

    options: {

      x: "iw/2-(iw/zoom/2)",

      y: "ih/2-(ih/zoom/2)",

      z: "if(lte(zoom,1.0),1.5,max(1.001,zoom-0.0040))",

      d: "125",

      s: "200x200"

    }

  }])

  .addInputOption(["-framerate 20", ])

  .addOutputOption(["-c:v libx264", "-r 30", "-pix_fmt yuv420p"])

  .addOption("-crf", 26)

  .format("mp4")

  .videoBitrate("1024k")

  .videoCodec("mpeg4")

  .on("error", function (er) {

    console.log("error occured: " + er.message, er);

    reject('er.message');

  })

  .on("end", function (data) {

    console.log("created video has been completed");



  }).save(finalVideoPath);



}, 10000);





  /* thitrd block*/ 

// marge video

setTimeout(() => {



  new ffmpeg({

      source: finalVideoPath,

      nolog: true,

    })

    .mergeAdd(__dirname + "/video/video.mp4")

    .mergeAdd(__dirname + "/video/video2.mp4")

    .mergeToFile(margeVideoPath, function () {



      console.log("marge video");

      resolve();

    });





}, 20000);



})





};