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4 Ways to Merge MP4 and MP3

The rising trends in audio and visual effects have introduced the media industry to new dimensions of technology. The screens around us are flickering 24/7 with videos on several topics. But, without the perfect background audios, their underlying message remains unheard. Hence, a balance of sound and picture is necessary to entice the audience and break the monotony. You can also create personalized videos by merging various video clips and adding the background sound afterwards. For this purpose, all you need is a tool that can add audio to your videos.

Let's look at four different ways of merging audios and videos. The tools will help you craft high-end videos without involving any complex steps. You can make your videos beautiful by using the following easy to use tools.

  • Filmora Wondershare
  • VLC
  • Photos App on Windows 10
  • Using the Online Converter

Merge MP4 and MP3 Using Filmora Wondershare

Filmora Video Editor is an editing tool that brings your creativity and productivity to a whole new level. It comes with several editing options for both audio and video. All you need is to let your imagination run wild to give a personalized touch to your videos.

If you want to record podcasts, narration or voiceovers with lowered background music under speech, its audio ducking feature comes in handy. Filmora's auto-synchronization feature is the cherry on top. It facilitates matching your audio with your video in a crispy way. Thus, making the whole experience of customizing video more professional.

Adding more to it, the Filmora Montage maker edits your video automatically to make it smooth with the music of your choice. This auto-beat sync feature is user friendly and convenient. Hence, you cannot deny that from beginners to intermediate, Filmora is empowering creators over the globe.

Filmora comes with an in-built audio library that serves the purpose of adding different sounds in the background. Its drag and drop feature make its interface more user friendly.It allows you to add audio files (.AAC, .MP3, or .WMA) to videos (.Avi, .MP4, .MKV).It supports different audio and video formats that help you create awesome videos.

Free Download

For Win 7 or later (64-bit)

Free Download

For macOS 10.14 or later

Here is a step-by-step guide for adding sound to your videos.

Step 1: Importing the Media files (Both Audio and Video)

After you finish installing Wondershare Filmora from the official website on your computer, launch it.

You can import the MP4 and MP3 files by going to the File menu and then selecting import media files.

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Tip: The software comes with a huge built-in library. You can also use it to add sound to your project.

Step 2: Adding media files to Timeline

  • Now, hover the mouse over the media files that you have imported.
  • Use the drag and drop feature to add the mp4 and mp3 files to the timeline.
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If you want to modify the audio, the audio panel can be seen by double-tapping the audio from the timeline. This panel will appear at the top of the screen.

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You can explore different options ranging from ducking to denoising.

Step 3: Exporting the File

Now that the audio has been added to the video, select the 'Export' tab so that you can export your video.

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 The exported file can be saved in different formats. (MP4, WMV, etc)

 Tip: You can rename and define the resolution for better output.

Merge MP4 and MP3 Using VLC Media Player

VLC is an open-source media player that works for different platforms (Windows, Mac and Linux). The media player comes with features ranging from compression to conversion. This multimedia framework supports audio formats like AAC, AC-3, DV Audio, FLAC, MP3, Speex, Vorbis. It also supports different video formats.

If your video has no background sound, you can add it to your videos by following simple steps. Not only that, but you can also change the original audio track to make your video an exquisite piece of art.

The majority of people consider VLC as only a media player. But, it works as a video editor as well. Therefore, it allows you to add background sound to your videos. This handy tool supports various streaming protocols along with almost all multimedia files.

Here is a demonstration for adding audio to your video.

Step 1: Installation

The first step would be installing the VLC media player on your computer and launching it afterward.

Click on Media and then select Convert/Save.

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 A pop-up window will appear in which you have to select the Add option. This will help you load the targeted video.

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Step 2: Playing both audio and video in a synchronous manner

  • After loading the video, at the bottom of the dialogue box, tick the Show more options.
  • Select the option named 'Play another media synchronously.
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 Click Browse to import your desired audio. It will open another window.

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Step 3: Adding audio

 Click + Add on the second Open Media window. It will load the audio files for the video.

  • Now, you’ll have your video and audio files in the formats of mp4 and mp3 respectively.
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  • Click on Convert/Save
  • A pop-up window will appear asking about the format you wish to have for your video.
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  • Also, by selecting Browse, select the destination where you want to save your video.
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  • Click on Start so that the video and audio can be merged.
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Merge MP4 and MP3 Using Windows Photo App

Windows Photo App is home to all audio and video files on your PC. You can view, edit and store your audio and video files in it. It also allows you to share those among your family and friends. The tool comes with an AI-powered assistant to manage your media efficiently. Hence, you can find your required media files faster.

With its editing features, you can bring dull moments to life. It lets you integrate photos and videos into third-party apps so that you may transform your mundane videos into extraordinary ones.

The App also comes with a backup feature that makes it a safe home for your life's memories.

If you want to merge recordings of small video clips in no time, then Windows Photo App will assist you in doing it in a jiff. It is a built-in app for Windows 10 and comes with the easiest ways of adding sound to your videos.

Have a look at the following steps.

You can find the Windows Photo app on your desktop or press the Windows + S to open the Start menu search and type Photos in the search box.

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  • Click on the video editor tab.
  • Select the New Video project to start a blank project.
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A dialogue box will appear asking to add the desired project name. Enter the name.

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You'll see an add button on the left side. By selecting it, a drop-down menu will appear. It will show you different options for adding video to your project.

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Select the desired option and add the video clips.

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Adjust the order of your videos by dragging the videos in the storyboard.

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  • You can trim, split and rotate your videos here.
  • It also allows you to use various filters, texts and 3D effects.
  • After completing the editing, select the finish video button on the menu bar.
  • Select your preferred video quality.

You can add audio by selecting the Custom Audio option.

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You will see a window-pane on the right side with different options for adding the sound. You can add it by the drag and drop feature or by clicking on the add file option.

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  • Select Done to complete the process.
  • You have successfully added mp3 to your video file.
  • Tap on Finish video in the upper right corner to complete the process.
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  • You can also select the quality of your video.
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Click on Export to save your file to your desired destination.

Merge MP4 and MP3 Using Using Online Converter

Different online resources on the internet will help combine videos. You do not have to go through the hassle of downloading and installing third-party apps. Online Converter supports different formats like MP4, AVI, FLV, MOV, 3GP, MKV, etc. With it, you can combine multiple video files into a single file in no time. The most popular output format is MP4.

The procedure is simple. You have to upload your video clips on Online Converter in the order that you want in the final output.

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You’ll navigate to a page with options for adding the media files by clicking on the choose file.

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After uploading the media files. You will also see options for the audio in a drop-down menu.

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Select the Add option to merge mp3 to mp4.

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After the mp3 is merged to the mp4, you can download the converted file or share it via social media as well.

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Disadvantages:

  • If your internet connectivity is poor, the videos may take longer to upload.
  • If the response time is slow, you need to cancel the process and re-submit the data.
  • Encrypted or protected video files are not supported for the merger of the videos.

Conclusion

Each tool comes with its pros and cons. With the wide range of video editing options, you can explore these different platforms and add life to your moments. Whether you are a beginner or an intermediate, editing multimedia files has been made easy by these different tools.

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