Video Thumbnail

index.js

var ffmpeg = require('fluent-ffmpeg');
var path = require('path');

new ffmpeg(path.join(__dirname, 'input.mp4'))
    .takeScreenshots({
        filename: 'thumbnail.png',
        size: '640x480',
        timemarks: [ '50%' ],
    }, __dirname, function(err) {
        if (err) {
            console.error(err);
        } else {
            console.log('screenshots were saved');
        }
    });

npm install --save fluent-ffmpeg