Spectrum visualizer
Turn a song into a video of its audio spectrum: bars from the lows to the highs that move with the music. Free, with no watermark or upload.
Drop your song
Then pick how it looks and save a video that moves with the sound. Nothing is uploaded.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to make an audio spectrum video
Open a song and save an MP4 of its spectrum: a row of bars, lows on the left and highs on the right, that rise and fall with the music. Put them in the middle or along the bottom, or bend them into a ring. This audio spectrum visualizer runs in your browser, so the song is never uploaded.
Step 1
Choose your songPick an MP3, WAV, M4A, or other sound file.Step 2
Set the barsChoose a place, a color, and a size, or bend them into a ring.Step 3
Download the MP4Save a video of the spectrum moving with the music.
What to expect
- Supported inputs
- Songs and other sound files, such as MP3, M4A, WAV, FLAC, and OGG. Pictures can be PNG, JPEG, or WebP.
- What happens
- The sound is split into 64 bands, from about 45 Hz to 16 kHz, 30 times a second. Each song is scaled to its own loudness, so a quiet recording moves as much as a loud master.
- Limits
- One song per video. The spectrum is drawn from a file, not live from a microphone or a browser tab.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark