Node.js Fluent-FFMPEG Example to Change Video Resolution & Compress to Smaller Size in Command Line

Welcome folks today in this blog post we will be using the fluent-ffmpeg library to change the video resolution and compress to smaller size in node.js . All the full source code of the application is shown below.

Get Started

In order to get started you need to make a new node.js project using the below command as shown below

npm init -y

npm i fluent-ffmpeg

And after that you need to make an index.js file and copy paste the following code

index.js

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

const inputPath = 'video.mp4';
const outputPath = 'output.mp4';

const width = 640;
const height = 480;
const bitrate = '800k';

ffmpeg(inputPath)
  .size(`${width}x${height}`)
  .videoBitrate(bitrate)
  .save(outputPath)
  .on('end', () => {
    console.log('Video resolution and file size have been changed successfully!');
  })
  .on('error', (err) => {
    console.log('Error: ' + err.message);
  });

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

const inputPath = 'video.mp4';

const outputPath = 'output.mp4';

const width = 640;

const height = 480;

const bitrate = '800k';

ffmpeg(inputPath)

.size(`${width}x${height}`)

.videoBitrate(bitrate)

.save(outputPath)

.on('end', () => {

console.log('Video resolution and file size have been changed successfully!');

})

.on('error', (err) => {

console.log('Error: ' + err.message);

});

As you can see we are importing the fluent-ffmpeg library and then we are providing the path of the input video file and then we are changing the bitrate using the videoBitrate() method and then we are compressing the size using the size() method. And then we are saving the video using the save() method.