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• How to decode the video stream of an mp4 file and save the decoded images to local directory in NodeJs

  8 août 2018, par Rohit Verma

  How to decode the video stream of an mp4 file and save the decoded images to local directory in NodeJs. I have tried ffmpeg and fluent ffmpeg but didn’t get clear idea how to use,As I was getting error while using fluent ffmpeg

  Code snippet :

      const ffmpeg = require('fluent-ffmpeg') 
  
      const probe = require('ffmpeg-probe')
  
  
  
  const info = await probe('input.mp4')

  and in case of ffmpeg I have tried this,

   var ffmpeg = require('ffmpeg');
  
  
  
   try {
  
      var process = new ffmpeg("VID_20160805_121411556.mp4");
  
      process.then(function (video) {
  
          // Callback mode
  
          video.fnExtractFrameToJPG('C:/Users/PcName/Documents', {
  
              frame_rate : 1,
  
              number : 5,
  
              file_name : 'my_frame_%t_%s'
  
          }, function (error, files) {
  
              if (!error)
  
                  console.log('Frames: ' + files);
  
          });
  
      }, function (err) {
  
          console.log('Error: ' + err);
  
      });
  
  } catch (e) {
  
      console.log(e.code);
  
      console.log(e.msg);
  
  }

  Nothing is working and I didn’t get any clue how to do so.

• Invalid data when processing input ogg in ffmpeg

  23 mars 2023, par Albert Gomáriz Sancha

  I am getting an ogg file and I am trying to convert it to a mopo3 file using fluent-ffmpef node library. When trying to convert it, then this error is shown :** An error occurred : Error : ffmpeg exited with code 1 : pipe:0 : Invalid data found when processing input**.

  


  Can someone help me please ?

  


  This is my code :

  


   const input = createReadStream(getPath("temp.ogg"));
  // console.log(input);
  // ffmpeg.setFfmpegPath(ffmpegPath);

  // const output = createWriteStream(getPath("temp.mp3"));
  // spawn(`ffmpeg -i ${getPath("temp.ogg")} ${getPath("temp.mp3")}`);
  ffmpeg(input)
    .setFfmpegPath(ffmpegPath)
    .toFormat("wav")
    .on("data", (data) => {})
    .on("error", (err) => {
      console.log("An error occurred: " + err);
    })
    .on("progress", (progress) => {
      // console.log(JSON.stringify(progress));
      console.log("Processing: " + progress.targetSize + " KB converted");
    })
    .on("end", () => {
      console.log("Processing finished !");
    })
    .save(getPath("temp.mp3")); //path where you want to save your file


  


• AWS Lambda for generate thumbnail save empty file

  30 octobre 2019, par Milousel

  I need to create aws lambda for creating thumbnail from video by using ffmpeg, which is saved on S3 and this thumbnail saved into S3 too.

  I downloaded ffmpeg from https://johnvansickle.com/ffmpeg/ page, set ffmpeg into nodejs file and send it into .zip. From this zip file I created ffmpeg layer. After that I connect my lambda with this ffmpeg layer. When I test it I receive Success response, but I save empty file (0 B size) into S3.

  const AWS = require("aws-sdk");
  
  const { spawn } = require("child_process");
  
  const { createReadStream, createWriteStream } = require("fs");
  
  
  
  const s3 = new AWS.S3();
  
  const ffmpegPath = "/opt/nodejs/ffmpeg";
  
  const allowedTypes = ["mov", "mpg", "mpeg", "mp4", "wmv", "avi", "webm"];
  
  const width = process.env.WIDTH;
  
  const height = process.env.HEIGHT;
  
  
  
  module.exports.handler = async (event, context) => {
  
    const srcKey = "test/0255f240-efef-11e9-862e-3949600f0ec9.mp4";
  
    const bucket = "video.devel.abc.com";
  
    const target = s3.getSignedUrl("getObject", {
  
      Bucket: bucket,
  
      Key: srcKey,
  
      Expires: 1000
  
    });
  
    let fileType = "mp4";
  
    console.log("srcKey: " + srcKey);
  
    console.log("bucket: " + bucket);
  
    console.log("target: " + target);
  
    if (!fileType) {
  
      throw new Error(`invalid file type found for key: ${srcKey}`);
  
    }
  
  
  
    if (allowedTypes.indexOf(fileType) === -1) {
  
      throw new Error(`filetype: ${fileType} is not an allowed type`);
  
    }
  
  
  
    function createImage(seek) {
  
      return new Promise((resolve, reject) => {
  
        let tmpFile = createWriteStream(`/tmp/screenshot.jpg`);
  
        const ffmpeg = spawn(ffmpegPath, [
  
          "-ss",
  
          seek,
  
          "-i",
  
          target,
  
          "-vf",
  
          `thumbnail,scale=${width}:${height}`,
  
          "-qscale:v",
  
          "2",
  
          "-frames:v",
  
          "1",
  
          "-f",
  
          "image2",
  
          "-c:v",
  
          "mjpeg",
  
          "pipe:1"
  
        ]);
  
  
  
        ffmpeg.stdout.pipe(tmpFile);
  
        ffmpeg.on("close", function(code) {
  
            console.log('code: ' + code);
  
          tmpFile.end();
  
          resolve();
  
        });
  
  
  
        ffmpeg.on("error", function(err) {
  
          console.log(err);
  
          reject();
  
        });
  
      });
  
    }
  
  
  
    function uploadToS3() {
  
      return new Promise((resolve, reject) => {
  
        let tmpFile = createReadStream(`/tmp/screenshot.jpg`);
  
        let dstKey = srcKey
  
          .replace(/\.\w+$/, `.jpg`)
  
          .replace("test/", "test/shots/");
  
        //const screensFile = "test/shots/";
  
        console.log("dstKey: " + dstKey);
  
        var params = {
  
          Bucket: bucket,
  
          Key: dstKey,
  
          Body: tmpFile,
  
          ContentType: `image/jpg`
  
        };
  
  
  
        s3.upload(params, function(err, data) {
  
          if (err) {
  
            console.log(err);
  
            reject();
  
          }
  
          console.log(`successful upload to ${bucket}/${dstKey}`);
  
          resolve();
  
        });
  
      });
  
    }
  
  
  
    await createImage(1);
  
    await uploadToS3();
  
    return console.log(`processed ${bucket}/${srcKey} successfully`);
  
  };

  When I test it I receive these logs :

• srcKey : test/0255f240-efef-11e9-862e-3949600f0ec9.mp4
• bucket : video.devel.abc.com
• INFO processed video.devel.abc.com successfully
• code : 1
• bucket : video.devel.abc.com
• dstKey : test/shots/0255f240-efef-11e9-862e-3949600f0ec9.jpg
• successful upload to video.devel.abc.com/test/shots/0255f240-efef-11e9-862e-3949600f0ec9.jpg
• processed video.devel.abc.com/test/0255f240-efef-11e9-862e-3949600f0ec9.mp4 successfully

So file is really created, but it is empty (size is 0 B), which is not ideal.