Adding music and sound effects
- Music library
- Sound effects
Cardboard includes 34+ royalty-free tracks you can use in any project without worrying about licensing.Browse by genre:
- Electronic, Acoustic, Cinematic, Pop, Ambient, Corporate, Rock, Folk, Funk
- Upbeat, Calm, Dramatic, Inspirational, Playful, Chill, Tense, Melancholic, Confident, Mysterious
All music and sound effects in the built-in library are royalty-free. You can use them in commercial and personal projects without additional licensing.
Volume and fades
Per-clip volume
Each clip on the timeline has its own volume control, adjustable from 0% (silent) to 100% (full volume). Select a clip and use the volume slider in the clip inspector to set it.Master volume
The master volume slider controls the overall output level of your entire project. Use it to make a final volume adjustment before exporting.Fade in and fade out
Add smooth audio fades to any clip:- Fade in — Volume ramps up gradually at the start of the clip
- Fade out — Volume ramps down gradually at the end of the clip
Beat detection
Cardboard’s AI can analyze any audio track to detect BPM (beats per minute) and individual beat timestamps. This is useful for:- Syncing cuts to the beat of a song
- Timing transitions to musical accents
- Creating rhythmic montages
AI prompts for audio
You can manage audio from the AI Chat panel too:- “Add upbeat background music”
- “Lower music during speaking parts”
- “Add a click sound effect when the button appears”
- “Fade out the music over the last 3 seconds”
- “Remove background noise from the interview clips”