Apply Background Audio/MP3 to Video

Overview

What is Apply Background Audio/MP3 to Video?

Apply Background Audio/MP3 to Video replaces your clip’s soundtrack with a chosen MP3 — pick a copyright-free Mixkit track or upload your own audio. FrontendGeek muxes video and audio online, then lets you preview and download a clean MP4. Browse more free tracks with Download Copyright Free Music, grab source footage via YouTube Video Downloader or YouTube to MP4 Converter, extract audio with YouTube to MP3 Converter, or swap formats with MP3 to MP4 Converter and MP4 to MP3 Converter.

How to use

How to apply background MP3 to a video online?

1. 1

   Upload your video

   Drop an MP4, MOV, or WebM up to 50 MB and preview the clip. For a broader convert-and-save flow, try the MP4 to MP3 Converter.

2. 2

   Choose background audio

   Select a copyright-free track from the list or upload your own MP3 (up to 20 MB).

3. 3

   Apply Background Music

   Click Apply Background Music. The MP3 loops if needed and is trimmed to the video length.

4. 4

   Preview and download MP4

   Play the finished video with the new soundtrack, then download the MP4.

Features

Features of Apply Background Audio/MP3 to Video

Safety & license tips

Only combine video and audio you own or have permission to use. Check Mixkit license terms before monetizing.

Guides

Audio & Video Converter Guides

Format comparisons and audio/video conversion help from the Tools Guide.

• Understand Video Format & Quality — Best Video Quality to Download
• MP4 vs WebM — Understand the Difference
• MP4 vs MOV — Understand the Difference
• How to Convert Youtube to MP4 for Free
• How to Extract Audio from YouTube Video — Convert YouTube to MP3
• Why Sometimes YouTube Downloads Have No Audio [Troubleshooting]