Add Music to Video
Audio Sync & Library
Video without audio is just surveillance footage. Music is the emotional engine of storytelling. Sync tracks, handle copyright, and mix levels automatically.
Trusted by creative teams at
Sonic Sync Engine
Royalty-free library & AI mixer
Trending Tracks
Future Bass Dreams
Electronic • 128 BPM
Acoustic Morning
Folk • 90 BPM
Urban Streets
Hip Hop • 105 BPM
Cyberpunk Night
Dark Synth • 140 BPM
The Emotional Engine of Storytelling
Finding the right song is hard. Finding a song that doesn't get you copyright striked is harder. Syncing that song so the bass drop hits exactly when you reveal the logo is a technical skill.
FlowVideo AI solves the 'Music Problem' holistically by offering 100,000+ commercially licensed tracks safe for all platforms, combined with semantic search and automatic sync tools.
Our rhythmic engine handles the heavy lifting—from beat detection to automatic 'Ducking' that ensures your voiceover is never drowned out by the background score.
Why Use our Music Tool?
The science of Sonic Branding.
Copyright Safety
Avoid revenue claims or mutes. Our tracks include a 'Commercial Clear' license. We embed a digital token in metadata to whitelist your video on YouTube before strikes happen.
Emotional Cueing
Music hits the limbic system. Filter by 'Mood' (Angry/Hopeful/Quirky) instead of just genre. Our AI identifies harmonic structures that match your psychological intent.
AI Audio Ducking
Prevents voiceovers from fighting the music. The 'Auto-Duck' feature listens for speech and lowers music volume (-15dB) instantly, swelling it back when talking stops.
Sonic stingers
Increase production value with whooshes and stingers. Sync a 'Swoosh' sound perfectly to a flying text box or logo reveal with frame-perfect precision.
The Technology: Beat Detection & Elastic Audio
How we make the music fit the video.
Transient Analysis
We scan waveforms for sharp drum spikes (transients) to create a hidden 'Beat Grid'. Video clips magnetically snap to this grid for effortless on-beat cutting.
AI Elastic Time
Don't just fade out early. Our 'Smart Cut' rearranges song structures (Intro/Verse/Outro) to fit your video's exact length while maintaining a natural musical finish.
Stem Separation
Isolate tracks—get just the drums, bass, or instruments. Extract vocals or mute them while keeping the beat. You are the DJ with full multi-track control.
Sonic Layering Workflow
From Silent to Symphonic.
Upload Video
Drag your MP4 or MOV. Watch it dry to identify emotional turning points and where the music should peak.
Select Track
Browse our library by Mood, Genre, or Duration. Preview instantly and drag your choice to Audio Track 1.
Trim & Sync
Slide the waveform so the 'Drop' hits the visual climax. Use Loop handles to seamlessly extend short tracks.
Add Sound Effects
Layer SFX (Camera Shutter, Whoosh) on Audio Track 2. Set volume to -10dB for subtle professional texture.
Master Mix & Export
Ensure master levels don't peak above -3dB. Verify voice clarity over music, then bake everything into your finished MP4.
Industry Use Cases
Fitness Videos
Match 128 BPM Techno to cardio heart rates. Sync cuts to the beat to maintain workout momentum.
Meditation Apps
Use 432Hz Ambient drones to induce theta waves. Long cross-dissolves match the naturally slow meditative tempo.
Tech Reviewers
Modern Synthwave/Lo-fi vibes. Auto-ducking is critical here for clear technical spec narration over music.
Travel Vlogs
Tropical House tracks for that vacation feeling. Fast cuts on the beat for high-energy travel montages.
What Users Are Saying
Sounds like professional studio production.
“The beat-sync tool is a game changer. I just drop my clips and they snap to the music. It makes my workout reels look perfectly edited.”
Leo R.
Fitness Influencer
“The auto-ducking feature saves me so much time. I don't have to manually lower the music volume every time I start talking anymore.”
Maya V.
Corporate Trainer
“Having royalty-free music and sound effects in the same timeline is great. No more searching across five different sites for one swoosh.”
Chris P.
YouTube Tech Channel
Frequently Asked Questions about Adding Music
Half of video is audio. If you ignore the sound, you are failing half the senses. FlowVideo AI's Add Music tool gives you the power of a sound engineer and the library of a record label.