01
Add audio
Drop an MP3, WAV, FLAC or similar file, or open one from Your Library. Decoding stays on your device.
Live Audio Visualizer
Turn any track into a moving waveform, frequency bars or circular spectrum. Match colors to your brand, pick a size for YouTube Shorts, TikTok or Reels, and record the result to video — processing stays in your browser.
Drop an audio file here
or choose a recording from your computer
MP3 · WAV · FLAC · AAC · M4A · OGG · OPUS
Presets
Style
Size
Colors
Sensitivity
1.0×
Motion smoothing
78%
Lower values react sharply to transients; higher values create smoother, flowing motion.
Recording captures the canvas and the audio into a WebM file in your browser. Length matches playback from when you start recording until you stop.
Visualization and recording run locally in this browser — your audio is not uploaded to our servers.
What is the Live Audio Visualizer?
Live Audio Visualizer plays a track and draws a reactive graphic from its frequency data: vertical bars, a classic waveform, a circular ring or a dense spectrum. Creators use it for lyric videos, podcast openers, social clips and looping backgrounds without opening a heavy video editor.
You choose the look, the color palette and the frame size. Presets cover landscape YouTube, vertical Shorts / TikTok / Reels and a square feed format. When the motion matches the track, you can record the canvas together with the sound and download a WebM video ready to upload or convert.
Everything is designed to run on your device. The file is decoded in the browser, the analyser drives the canvas in real time, and MediaRecorder builds the video from those frames — no cloud render queue.
How it works
02
Pick a style and size
Switch between frequency bars, waveform, circular, spectrum or mirrored bars. Set 16:9, 9:16 or 1:1 and tune primary, secondary and background colors.
03
Play and adjust
Hit Play and watch the visualizer react. Change sensitivity if the bars feel too flat or too aggressive for the mix.
04
Record and download
Start recording, let the track play, then stop. Download the WebM and upload it to Shorts, TikTok, Reels or convert it to MP4 if needed.
Common problems and what to do
Visualizer looks flat
Raise Sensitivity or switch to Frequency bars / Spectrum. Very quiet masters need a higher analyser boost; extremely compressed tracks may still look dense at any setting.
Recording has no sound
Start recording only after the file has finished loading. Keep the tab active while recording — some browsers throttle background tabs and may drop audio into the capture stream.
Vertical crop feels tight
Use the 9:16 preset before you record. Changing size mid-recording is not applied to the file already being captured; stop, pick the size, then record again.
WebM will not open in my editor
Many NLEs prefer MP4. Convert the downloaded WebM with the site’s video tools, or import it into a player that supports VP8/VP9 + Opus and re-export.
Colors look different on upload
Social platforms re-encode video. Slight shifts are normal. Keep contrast high between bars and background so the motion still reads after compression.
File will not play
Try converting the source to WAV or MP3 first. DRM-protected or unusual codecs may fail in the browser decoder even if the visualizer UI loads.
Frequently asked questions
Does my audio get uploaded?
No. Decoding, analysis and recording run in your browser. The tool reads the audio on your device, draws the animation from its frequency data, and builds the video locally, so Sound Booster does not need the file on a server. That makes it suitable for unreleased tracks, client work and private recordings.
Which visual styles are available?
There are five: Frequency bars, Waveform, Circular, Spectrum and Mirrored bars. You can also start from a preset such as Neon, Minimal, Retro, Spectrum or Ambient Glow. You can change style while the track is paused or playing, which makes it easy to compare looks before you record.
Can I export for TikTok or Shorts?
Yes. Choose the 9:16 size, which is built for Shorts, TikTok and Reels, then record the performance and download the WebM. Pick the size before you start recording, because it cannot be changed mid-capture. If a platform or editor requires MP4, convert the WebM afterwards.
How does video recording work?
The browser captures the canvas stream and mixes it with the playing audio via MediaRecorder. Recording begins when you press Record and ends when you stop, so the video length matches that stretch of playback. The result is a WebM file saved on your device, with no cloud render queue involved.
Is there a time limit on recordings?
The tool does not set a fixed limit; the video length equals the time between pressing Record and Stop. In practice the limit is your device’s memory and the browser tab staying active. For long podcasts, record shorter sections or export several takes instead of one very large file.
What do Sensitivity and Motion smoothing change?
Sensitivity scales how strongly the graphic reacts to the music, from 0.4× up to 2.5×. Raise it for quiet masters that look flat, and lower it if the bars hit the ceiling. Motion smoothing runs from about 15% to 95%: low values react sharply to every transient, while high values give a slower, flowing movement.
Which style works best for music, speech or podcasts?
Frequency bars and Spectrum suit beat-driven music because they respond to bass and highs separately. Waveform is a natural fit for speech and podcast clips, where a clean line follows the voice. Circular and Mirrored bars look good as centered visuals for lyric videos or intros. Try two styles on the same section and choose by eye.
How can I add my logo or cover art to the video?
The visualizer concentrates on the animated graphic itself, and you set the primary, secondary and background colors to match your brand. To place a logo, album cover or title, record the visualizer first and then add those elements in a video editor. Choosing a solid background color also makes it easier to key out or overlay later.
How do I turn the recorded WebM into an MP4?
Download the WebM, then open the WEBM to MP4 converter on Sound Booster and convert it there. The conversion also runs in your browser. Do this when your editor, a social app or an upload form rejects WebM files. Keep the original WebM until you have confirmed the MP4 plays correctly.