Turn a track into a video, in this tab
Load audio, let the lab read its duration, tempo and energy, then shape a storyboard with eight canvas looks and export WebM, a poster PNG and subtitle files. Nothing is uploaded and no account is needed.
3 · Storyboard
0 scenesScenes stay contiguous: change a start or a length and the neighbours are clamped to fit. Picking an image switches that scene to the slideshow look.
Export
IdleWebM recording runs in realtime: the track plays from the top while the canvas and audio are captured. Keep this tab in front until it finishes.
1 · Audio
No track yetWaveform overview — white lines mark the detected energy sections.
2 · Words
Unstamped lines are spread over the track; stamped lines anchor and the gaps between them are interpolated.
4 · Look & render
The eight looks
Every scene picks one of these; the planner chooses by section role, and you can override per scene or for the whole video.
Questions
Does my audio leave the browser?
No. Files are decoded locally with Web Audio.
Why WebM and not MP4?
MediaRecorder in browsers encodes WebM.
How are sections detected?
The RMS envelope is smoothed and quantised into loudness bands.
Can I test it with no audio?
Yes — the demo track synthesises a ten-second clip in the page.