In a video’s soundtrack, you can describe, comment, joke, and annotate the action with a voiceover. The voiceover – a recording of someone speaking – makes your video more compelling, interesting and emotional since it appeals to more senses and involves a human voice instead of just a muted visual. In this post, I’ll share how you add voiceover to a video using free, online tools.

Note: You can also watch Kapwing’s video tutorial on merging audio and video.

1) Record your voice-over

After you film your video, you can use a free tool like Quicktime, Loom, or an app on your phone to record your voiceover. Save the file as an MP3 and trim off any errors/extra sound at the start or end of the video.

Alternatively, you can record your voiceover directly from Kapwing's free online voice recording tool. To add a voiceover to a video, open the Add Music tool and upload the video. Then, click the "Record" button. You'll be able to record your voiceover as the video plays directly from your browser.

2) Merge voice-over MP3 with video file

Open Kapwing’s Add Voice Over to video tool and upload your video. With Kapwing’s add music to video tool, you can upload your video or paste a link to the video if it is already on YouTube or another site.

Then, upload your voice recording MP3 file and choose the start time so that the audio plays at the right moment. You can also adjust the volume of the voiceover and trim the audio file down so that only the section you want appears as an audio overlay on the video.

Kapwing will merge your music with the video’s sound to preserve its existing audio. You can also mute the video’s existing soundtrack to replace it with the new music.

Step 3: Publish and Share

Once your video sounds correct, click CREATE to merge the voiceover together with the video file. Kapwing will process the new video with an added voiceover. Once the final MP4 has been created, you can download the video as an MP4 file or share the page directly on social media or with friends. You can also re-edit the video to add more audio tracks, subtitles, or scenes in the future.

To remove the Kapwing watermark, just sign in! Your voiceover video will be saved to your Kapwing Workspace with the audio merged.

Merging a voice-over into your video can make a screencast, a demo, or a technical video more fun, human, and engaging. I hope this helps you add voiceover MP3 audio tracks to your videos for bet