OpenCV: FFMPEG: tag 0x7634706d/'mp4v' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'

[cherishman2005]

Error Message

# node video_decoder.js 
OpenCV: FFMPEG: tag 0x7634706d/'mp4v' is not supported with codec id 13 and format 'mp4 / MP4 (MPEG-4 Part 14)'
OpenCV: FFMPEG: fallback to use tag 0x00000020/' ???'
decode end, exiting.

Manual Build - Environment Information

source code( video_decoder.js ):

const cv = require('opencv4nodejs');

const grabFrames = (videoFile, delay, onFrame) => {
  const cap = new cv.VideoCapture(videoFile);
  let done = false;
  const intvl = setInterval(() => {
    let frame = cap.read();
    // loop back to start on end of stream reached
    if (frame.empty) {
      cap.reset();
      //frame = cap.read();
      clearInterval(intvl);
      console.log('decode end, exiting.');
    }
    onFrame(frame);

    const key = cv.waitKey(delay);
    done = key !== -1 && key !== 255;
    if (done) {
      clearInterval(intvl);
      console.log('Key pressed, exiting.');
    }

  }, 0);
};

let fps = 24
//let fourcc = cv.VideoWriter.fourcc('X264');
let fourcc = cv.VideoWriter.fourcc('mp4v');
let videoWriter = new cv.VideoWriter('testVideo.mp4', fourcc, fps, new cv.Size(640, 360))

let count = 0;
const delay = 50;
grabFrames('../data/traffic.mp4', delay, (frame) => {
  count++;
  cv.imwrite(__dirname + `/../archive/video/frame_${count}.jpg`, frame);
  videoWriter.write(frame);
});

videoWriter.release();

OpenCV version : 3.4.1

With OpenCV-contrib? (extra modules): yes/no?

OS: Ubuntu14.04