How to Replace Video Background Music: A Professional Guide with Filmora and Online Tools

Background music can make or break a video. Whether you’re refreshing a mood, avoiding copyright trouble, or simply wanting a different vibe, swapping the track is straightforward—and can be done with a powerful editor or a convenient online tool.

Part 1. Using Filmora’s Smart BGM Generator

The first step in any audio swap is to remove the original track. Once that’s done, Filmora’s Smart BGM Generator automatically creates a perfectly timed, royalty‑free soundtrack that matches the tone of your footage.

1. Launch Filmora and create a new project.
2. Import your video and drag it onto the timeline.
3. Right‑click the clip, choose Detach Audio, then delete the detached track.
4. Click the Smart BGM icon on the toolbar (add it via Custom Toolbar if missing).
5. Press Start—Filmora will analyze the clip and generate a matching background track.
6. Drag the new track onto the timeline, adjust volume in the property panel, and preview.
7. Export the finished video via Export → Local or Social Media.

Part 2. Creating a Custom Track with Filmora’s AI Music Generator

For a truly personalized sound, Filmora’s AI Music Generator lets you specify mood, genre, and length. This feature produces a royalty‑free track tailored to your project’s exact needs.

1. After detaching and deleting the original audio, open the Audio tab and select AI Music.
2. Choose Mood, Theme, and Genre; set Duration if desired.
3. Click Generate and preview the track.
4. Download the track, drag it onto the timeline, and fine‑tune its volume.
5. Export the final video.

Part 3. Selecting a Royalty‑Free Track from Filmora’s Music Library

Filmora’s built‑in library offers thousands of licensed tracks across genres. Browse, preview, and add any song directly to your timeline.

1. Detach and delete the original audio.
2. Go to the Audio tab, click Music, and search or filter by category.
3. Preview a track, then click the download icon.
4. Drag the downloaded track onto the timeline, adjust its level, and export.

Part 4. Changing Background Music Online with Free Tools

If you prefer a browser‑based workflow, platforms such as Kapwing, Clideo, and Online Video Cutter offer quick, no‑download solutions.

1. Visit Online Video Cutter (no sign‑up required).
2. Upload your video via Open File.
3. Detach and delete the original audio.
4. Upload a new audio file or choose from the limited online library.
5. Place the track on the timeline, adjust volume, and click Save → Export to download the edited video.

Changing the background track can dramatically alter a video’s impact—whether you’re aiming for a fresh feel or resolving copyright concerns, these methods give you the control and quality you need.