Is there a watermark on the video?

No. The video has only what you choose: the bars or waveform, your colours, your background photo and your title. There is no logo, no watermark and no sign-up.

What video format and sizes do I get?

An MP4 with H.264 video at 30 frames a second and AAC sound at 128 kbps, which plays on phones and computers and uploads to the common social and video sites. Pick square 1080 × 1080, landscape 1920 × 1080 or vertical 1080 × 1920.

How long can the audio be?

You can open files up to 100 MB and 30 minutes and pick any part of up to 5 minutes for the video. The page draws and encodes every frame on your device, so a long video takes a while to make and a short clip is quicker.

Does the audio visualizer work on a phone?

The preview works in current phone browsers. Saving the video needs the browser's video and AAC encoders: Chrome on Android has both, and on an iPhone or iPad Safari has them from version 26. The page checks when you open it and tells you if this browser cannot save the video.

Is my audio file uploaded?

No. The audio and any photo are processed in your browser and are not uploaded: the page decodes the sound, draws the frames and writes the MP4 on your device. It records ordinary analytics events, such as the style and size you chose, not the file, its name or your title.

Audio Visualizer

Turn a song, podcast clip or voice recording into a video with moving bars or a waveform that follows the sound. Watch the preview while it plays, then save an MP4 in square, landscape or vertical size. Free, no watermark, no sign-up; the audio is processed in your browser and is not uploaded.

Checking whether this browser can make video…

Drop your song, podcast clip or recording here or click to browse

MP3, M4A, AAC, WAV, OGG, OPUS, FLAC, WEBM or MP4, up to 100 MB and 30 minutes. Videos up to 5 minutes.

The audio and the picture are processed in your browser and are not uploaded.

How to make an audio visualizer video

Three steps, in your browser.

1
Drop the audio
MP3, M4A, WAV, FLAC and other common formats up to 100 MB and 30 minutes. Press play and the preview moves with the sound.
2
Pick the look
Choose bars, mirrored bars, a line waveform or circular bars, a colour preset or your own colours, an optional background photo and a title. Pick the part you want, up to five minutes, and the size: square, landscape or vertical.
3
Make the video
The page draws every frame from the sound at 30 frames a second, encodes it as H.264 with AAC sound and hands you an MP4. A progress bar shows how far it is, and you can cancel.

Need a still picture instead? The Audio Waveform Generator makes a PNG or SVG of the waveform. For a cover image or a title card over the sound, use MP3 to MP4.

Four styles

Frequency bars (audio spectrum visualizer)
Each bar is a slice of the spectrum, from deep bass on the left to the highest treble on the right, spaced the way we hear pitch. Kick drums move the left bars, cymbals and S sounds the right ones.
Mirrored bars
The same spectrum drawn up and down from a centre line. It reads well behind a title and suits square and vertical videos.
Line waveform
The sound wave itself, drawn as a line that shakes with the sound. Good for a voice: you see each word as it is spoken.
Circular bars
The spectrum around a circle. Put a logo or a photo behind it and the bars ring around the middle of the frame.

Music visualizer online: what people make with it

A podcast audiogram
Cut the best minute of an episode, add the episode title and post it as a square or vertical video. A moving waveform tells people there is sound to turn on.
A voice note on LinkedIn
Record a short story from a customer call or a thought from the road, then post it as a video so the feed shows something moving instead of a plain audio file.
A track for YouTube
YouTube needs a video. A landscape visualizer with the track name gives a song or a mix something to look at for the whole length.
Reels, Shorts and TikTok
Pick the vertical size and keep the part under a minute. Your own photo as the background keeps it recognisable.

Turning recordings into posts: podcast show notes, AI for journalists and sales storytelling.

Video sizes

Every video is 30 frames a second with 128 kbps AAC sound. Estimated size for one minute:

Size	Pixels	Fits	About a minute
Square	1080 × 1080	Feeds: LinkedIn, Instagram, Facebook	15.2 MB
Landscape	1920 × 1080	YouTube and most players	26.3 MB
Vertical	1080 × 1920	Reels, Shorts, TikTok, stories	26.3 MB

Estimates at the encoder's target bitrate; a plain background usually comes out smaller. Videos up to 5 minutes. 1 MB = 1,048,576 bytes.

Which browsers can make the video

The preview works in any current browser. Saving the video needs two parts of the browser's WebCodecs: a video encoder that can write H.264 and an audio encoder that can write AAC. Whether a browser can encode H.264 depends on the browser and the device, so the page checks when you open it.

Browser	Video encoder	Audio encoder (AAC)	H.264 here
Chrome	Since version 94	Since version 94	Checked when you open the page
Edge	Since version 94	Since version 94	Checked when you open the page
Safari (Mac, iPhone, iPad)	Since version 16.4	Since version 26	Checked when you open the page
Firefox on a computer	Since version 130	Since version 130	Checked when you open the page
Firefox on Android	Not available	Not available	No

Where each encoder exists, per MDN's browser compatibility data. If this browser cannot save the video, the page says so above the drop zone.

Visualizer, waveform image or MP3 to MP4?

This page makes a moving video: the bars or the line react to the sound frame by frame, the way a music visualizer does. Use it when you want motion that follows the audio.

If you only need a picture of the sound, for a thumbnail, a slide or a print, the Audio Waveform Generator makes a still image. If you want a cover image or a title card with the sound under it, MP3 to MP4 does that, with a simple waveform that fills in as an option.

Long recordings: the video is limited to 5 minutes because the page draws and encodes every frame on your device and keeps the finished video in memory until you save it. Pick the best part of a longer file.

Find the clip worth posting

The minute worth turning into a video usually sits inside a longer interview, meeting or call. ParrotNotes records the conversation on your phone and gives you the transcript and a summary, so the quote is easy to find. Free for 100 minutes of recording a month.

Get ParrotNotes free

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