Add Music or Audio to Any Video
Add music, voiceovers, and sound effects to your video right in your browser. Arrange and adjust your audio, then export it when it sounds right.
Over 1 million creators use Flixier every day including brands like:
How to Add Audio to Video Online
Sync Your Favorite Tracks to Your Video
Add Music and Voiceovers
Import audio straight from Google Drive, your phone, or your computer with no extra steps or file conversions. Drop it onto your video and trim it to fit exactly where you want it.
Balance Volume Automatically
Use Flixier’s AI audio enhancer presets to automatically balance volume levels on your audio track. Lower background music under dialogue without having to manually adjust every clip.
Add Free Stock Audio
Skip external stock sites and copyright risk. Choose from Flixier's built-in library of over 4 million royalty-free music and sound effect tracks, ready to drop straight onto your timeline.
Layer Multiple Tracks
Add more than one audio element to the same video, from background music or a voiceover to fun sound effects, on separate tracks you can mix independently.
Everything you need to create
and finish AI videos
Who This Is For
Marketers
Add voiceover and music to ads or promos, and pull tracks from Flixier's built-in library when you need the right mood fast.
See How It WorksPodcasters
Musicians
Social Creators
Unlike any tool
you've used before
I have over 11 years in the broadcast industry, building teleproductive facilities, using high-end editing equipment. And this is better than anything else I've used in my lifetime.
Still have questions?
We got you!
How can I add music to videos online for free?
Upload your video to Flixier's browser-based audio editor and drag a music track onto the timeline. The free plan supports videos up to 2 hours long and includes access to the built-in royalty-free music library.
How do I add a voiceover to video?
Upload a pre-recorded voiceover file, record it directly in Flixier, or generate an AI voiceover. Once it's on the timeline, you can arrange it however you like until it matches your video's pacing.
Can I layer multiple audio tracks on one video?
Yes. With Flixier, you can add background music, voiceovers, and sound effects to the same video, each on its own track, and mix them independently.
What audio formats does Flixier support?
Flixier supports MP3, WAV, AAC, OGG, and FLAC. Upload compressed files for quick web use, or go for higher-fidelity formats when you need studio-quality source audio.
Can I fade audio in and out?
Yes. You can apply a fade-in or fade-out to any audio clip in Flixier, so transitions between music, dialogue, or sound effects feel intentional rather than cut off.
