Introduction to Fluent-FFmpeg: The Ultimate Solution for Video Processing

Fluent-FFmpeg is a powerful Node.js library that provides a fluent API for running FFmpeg commands. It’s ideal for developers who want to integrate video and audio processing capabilities into their applications without diving deep into FFmpeg command-line syntax.

Getting Started with Fluent-FFmpeg

First, you need to install Fluent-FFmpeg:

$ npm install @ffmpeg-installer/ffmpeg fluent-ffmpeg

Basic Usage

Convert a video from one format to another:

const ffmpeg = require('fluent-ffmpeg');
ffmpeg('input.mp4')
  .output('output.avi')
  .run();

API Examples

Transcoding Video

Transcoding allows you to convert video files between different formats:

ffmpeg('input.mov')
  .output('output.mp4')
  .videoCodec('libx264')
  .audioCodec('aac')
  .run();

Extracting Audio

Extract audio from a video file:

ffmpeg('video.mp4')
  .output('audio.mp3')
  .noVideo()
  .run();

Taking Screenshots

Take screenshots at specific timestamps from a video:

ffmpeg('video.mp4')
  .screenshots({
    count: 3,
    folder: 'screenshots',
    size: '320x240'
  });

Video Filters

Apply filters to your video:

ffmpeg('input.mp4')
  .videoFilters('grayscale')
  .output('output.mp4')
  .run();

Combining Videos

Combine multiple video files:

ffmpeg()
  .input('part1.mp4')
  .input('part2.mp4')
  .mergeToFile('output.mp4', 'tempDirectory')
  .on('end', () => { console.log('Merging finished!'); });

App Example

Let’s build a simple Express app that provides an API endpoint to convert videos:

const express = require('express');
const ffmpeg = require('fluent-ffmpeg');
const multer = require('multer');
const app = express();
const upload = multer({ dest: 'uploads/' });

app.post('/convert', upload.single('video'), (req, res) => {
  ffmpeg(req.file.path)
    .output('uploads/output.mp4')
    .on('end', () => {
      res.send('File has been converted!');
    })
    .run();
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

This code sets up an Express server, uses the Multer middleware for handling file uploads, and converts uploaded videos to MP4 format.

With Fluent-FFmpeg, the possibilities for video processing are almost endless. Start exploring and unlock the full potential of video processing in your applications.

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