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Create an animated audio spectrogram

Choose a frequency look, preview the animation, then create the video.

How it works
  1. ImportChoose source
  2. EditSet the change
  3. PreviewReview result
  4. ExportCreate file
InputBrowser-decodable video or audioOutputMP4 or WebM video

This renders a spectrogram that moves: a scrolling, colour-mapped history of frequency over time, exported as an MP4 or WebM video. It suits sound design showcases, birdsong and field-recording analysis, music theory explainers, and any clip where you want viewers to see the structure of a sound rather than just an abstract bar animation.

A spectrogram, not a level meter

Ordinary music visualisers show energy in a handful of frequency bands right now. This shows the full spectrum with its history rolling across the frame, so patterns become legible as shapes: a rising sweep really does slope upward, a chord shows as parallel harmonic stacks, and a bird call keeps its distinctive fingerprint frame after frame. That makes it genuinely informative rather than decorative — which is why it is common in analysis videos and rare in music promos.

Colour mapping and scroll speed

The colour map decides which detail you can see. High-contrast maps make faint content pop out of the background, which is what you want for spotting a quiet call under noise; smoother maps look better but hide the quietest material. Scroll speed sets how much history is on screen: slow scrolling shows long-term structure such as the shape of a whole phrase, fast scrolling gives fine detail on transients. Choose based on what you want the viewer to notice, and preview before committing to a long render.

Questions, answered

How is this different from the audio visualizer?

The visualiser produces a decorative reactive animation. This renders an actual scrolling spectrogram, so frequency content and its history are readable on screen — informative rather than ornamental.

What is it good for?

Sound design breakdowns, birdsong and field recording analysis, music theory explainers, and any video where the point is to show viewers the structure of a sound.

Which colour map should I choose?

High-contrast maps reveal faint detail and are best for analysis; smoother maps look better but hide quiet content. Pick by whether the audience needs to see the quietest material.

MP4 or WebM?

MP4 for uploading to platforms and sharing. WebM when you are embedding on your own site and want a smaller file.

Can I generate this from a video file?

Yes. The soundtrack is read straight from the video, so you do not need to extract the audio first.

Useful next steps

Continue with a tool that fits naturally after animated spectrogram.

Next toolAudio visualizerSoundtrack → animated MP4 or WebMNext toolAudio waveformVideo or audio → waveform PNGNext toolAudio spectrogramVideo or audio → frequency PNGNext toolAdd audio to videoAlign, preview and mix any soundtrack