Wondershare Filmora9
Add audio to your video and edit video with powerful editing tools.
  • Edit audio separately by detaching it from video
  • Enhance videos with 300+ stunning effects
  • Over 50 audio effects and royalty free music

How to Add Audio to Video or Replace Audio in a Video File

May 24,2019• Proven solutions

The audio or music of video can have a dramatic effect on our perception of a video – no matter whether it’s a home movie, a commercial, or a video presentation. But what if all you have is silent footage or with just crackled and distorted audio file that needs to be replaced and at this time, you really want to add a sound to video?

To solve this problem, I humbly recommend Wondershare Filmora9. With it, you can easily add audio to video, or replace the original audio track (stream) with a new audio file or voiceover. Now see the easy steps to add audio to video files or replace the original audio track. So, here, I will let you know how to add audio to a video.

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Wondershare Filmora

  • User-friendly interface enables you to easily edit your videos;
  • Supports almost any video and audio formats (including WMV,MOV,FLV,MTS,etc);
  • Convenient to add audio to video without quality loss;
  • Adding audio to video is so easy
  • Supported OS: Windows (Windows 10 included) & Mac OS X (above 10.6).

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How to Add Audio to Video with Steps

Step 1: Add audio and video files to the program

After downloaded and installed Wondershare Filmora, you can either click Import on the primary windows and select audio and video files from your computer, or simply drag and drop audio and video files to the User's Album.

Add audio and video files to the program

You may also like: 10 Best Free Audio Editor for Windows and Mac

Step 2: Add audio file to video

Drag the audio and video files from User's Album and place them on the respective tracks of the Timeline. This way, the audio file(s) will be merged into the video. Note that the original audio track will be kept.

Add audio file to video

Step 3: Add voiceover to video

Instead of adding music to video, you can also add voiceover to video. It's a fun way to add narration or complementary audio to video. To do so, just click the Record button on the toolbar above Timeline, the Record dialog will appear. Click the red Record button and you can start to talk in 3 seconds. The voiceover will be added to User's Album as well as Timeline when completed.

Add voiceover to video

Step 4: Replace audio track of video

This is similar to add audio to video. Just an extra step is required: delete the video. To do so, right click the video you want to replace audio in it, and select Audio Detach. After that, delete the audio file from the track. As described above, you can then drag and drop a new audio file from User's Album to Audio track.

Replace audio track of video

Step 5: Adjust the audio file (optional)

A variety of audio editing tools are available: set volume, speed up, slow down, change pitch and add fade in/out effect. To change the settings, just double click the audio file on the timeline and drag the slide bar. Hit "Return" to confirm the settings and go back to the main interface.

Adjust the audio file (optional)

Step 6: Export video with new audio track

When all is ready, click "Create" and select "Format". From the list, choose any format you want as the output format. If necessary, also change the advanced settings. Finally, click "Create" button to export a new video file to the specified folder on computer. Besides export video your computer, you can also create video for devices like the iPhone, iPad, iPod, directly upload video to YouTube, or burn to DVD for playing on TV. All in one video editor, no extra software required.

Adjust the audio file (optional)


Above are the steps to add audio to video. If you want to know how to use another way to add audio to a video, you are welcome to leave a comment to us.

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Liza Brown
Liza Brown is a writer and a lover of all things video.
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