Add MP3 to MP4 - Add Audio MP3 to MP4 with Ease

Also Add Audio WAV, AAC, AC3, WMA, M4A and More to MP4 and Other Video Files

Jun 16, 2018, Posted by Shirley White

I've got a video which is an amazing MP4 file from YouTube. But I don't like the music. I want to add a special MP3 music to it. However, the program I use does not allow me to add separate audio. I tried Windows Movie Maker. Obviously, Windows Movie Maker hates MP4. So, any ideas?

Sometimes you may be in need of adding MP3 to your MP4 video in order to create a new movie for work, for fun or for other reasons. What you might not know is, for most video converting and editing software, adding audio to video is just a tiny part of their potential capability. Hence, which program you choose to finish the job would be the problem if you don't have much experience in this area. This article mainly focuses on how to add MP3 to MP4 on Mac and Windows. Just read it and get the answer.

Faasoft MP3 to MP4 Adder

To archive the goal of adding MP3 to MP4, getting professional and easy-to-use software is the efficient way. The popular Faasoft MP3 to MP4 Adder (for Mac, for Windows) works well in taking care of this task. Using it, you can add audio MP3 to MP4 easily and fast. In addition to add MP3 to MP4, this modern software tool also comes with a lot of additional useful features as below:

  • Add MP3 to MP4 to replace the original MP4 audio as well as keep the original MP4 video quality;
  • Add other audio to MP4 like add WAV to MP4, add AAC to MP4, add AC3 to MP4 and more;
  • Add audio in a variety of formats like MP3, WAV, M4A, AAC, etc to video in format MOV, FLV, AVI, WMV, MKV, etc;
  • Add watermark/effects/subtitles to a wide range of video, trim, crop and rotate video, change audio channel, and many other powerful editing features;
  • In addition to editing video, it also works as a great video and audio converter as it enables you to convert between a lot of video to video and video to audio;
  • Convert video and audio to optimized preset for almost all of the devices like iPhone, Android, Xbox, and more;
  • Compatible with both Mac and Windows.

The Steps to Add MP3 to MP4

How amazing this software is! If you decide to give it a try, click "Free Download" to get the trial version and install it by following the set-up wizard. Now, let's see how you can add MP3 to MP4 with detailed steps.

Step 1 Load MP4 file
Simply drag and drop your target MP4 to the main interface of Faasoft MP3 to MP4 Adder. It is the easiest way to import file.

Step 2 Load MP3 file
Go to "Effect" button in toolbar and click "Audio" tab. Note that if your source MP4 video has an audio, it will show in the box. Click "+" icon to browse your computer and select the MP3 audio that you want to add to MP4. The MP3 audio will appear in the box under the "+" icon. Now, just click "Ok" button if you are satisfied with everything. If you'd like to add multiple audio, just repeat this step.

Note that just uncheck the original MP4 audio and other audio if you want to replace the original MP4 audio with a new audio or you don't want to add the audio to your MP4 video.

Step 3 Add MP3 to MP4
Click the drop-down button beside "Profile" to choose output format if you are in need of converting your MP4 file to other video formats like AVI, MOV, FLV, etc. Now, everything is ready and just click "Convert" button on the bottom to start adding MP3 to MP4.