How to generate mp4 files in nodejs

Node.js is a very popular backend development language that is very powerful in web application development. If you want to use Node.js to generate mp4 files, in this article we will show you how to generate mp4 files using Node.js and FFmpeg.

FFmpeg is an open source, cross-platform audio and video processing tool that can realize multiple functions such as audio and video recording, transcoding, editing and merging. In this tutorial, we will use Node.js to call FFmpeg.

Before starting, please make sure that Node.js and FFmpeg are installed on your machine.

Step One: Install FFmpeg

Before calling FFmpeg in Node.js, you need to install FFmpeg first. You can download and install the credited version of FFmpeg from the FFmpeg official website.

In a Mac or Linux environment, you can use a package manager such as Homebrew or apt-get to install FFmpeg. In a Windows environment, you can use Cygwin or other Unix emulation environments.

After you install FFmpeg, enter the following command line in the command line to test it:

ffmpeg -version

If you see output similar to the following, FFmpeg is installed successfully:

ffmpeg version 4.3.1

Step 2: Install the fluent-ffmpeg library

fluent-ffmpeg is a very popular Node.js library that provides a series of functions for processing audio and video files. In this tutorial, we will use the fluent-ffmpeg library to process audio and video files.

You can use npm to install fluent-ffmpeg and add it to your project:

npm install fluent-ffmpeg

Step 3: Generate mp4 file

Now, let’s do Take a look at how to generate mp4 files using Node.js and fluent-ffmpeg. The following is a sample code:

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

ffmpeg("myvideo.avi")
  .output("myvideo.mp4")
  .on("end", function () {
    console.log("转换完成！");
  })
  .run();

The function of the above code is to convert the myvideo.avi file into a myvideo.mp4 file. When the conversion is complete, it will output "Conversion Complete!".

In the above code, we use fluent-ffmpeg to create an ffmpeg object and use the output() method to set the name of the output file. Next, we use the on() method to set up a callback function that will be executed when the conversion is completed.

Finally, we use the run() method to perform the conversion process. This will start the FFmpeg process and send it a command to perform the desired action.

In addition to converting files, fluent-ffmpeg also provides many other functions, such as adding text watermarks, taking screenshots, adding audio tracks, etc.

Conclusion

In this article, we introduced how to use Node.js and FFmpeg to generate mp4 files. FFmpeg is a very popular audio and video processing tool that can realize various functions such as audio and video recording, transcoding, editing and merging. fluent-ffmpeg is a very popular Node.js library that provides a series of functions for processing audio and video files. If you need to process audio and video files in Node.js, then FFmpeg and fluent-ffmpeg will be your good helpers.

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