Music Story Video Maker: Turn An MP3 Into A 9:16 Story Video

The Music Story video maker is a free Storrito tool that turns an MP3 into a 9:16 Instagram Story video, complete with cover art, title, artist and an animated audio visualizer. Everything runs in your browser — no upload, no signup, no watermark.

You can find it at storrito.com/tools/music-story-maker.

What you can do with it

• Pick an audio file: drop in an MP3, M4A, WAV or OGG. The file stays on your device — decoding happens in the browser.
• Style the frame: add a title and artist, upload cover art, pick a visualizer style, and tune the colors. The preview updates live.
• Pick a clip window: 15, 30 or 60 seconds — the native Story durations.
• Export an MP4: 1080x1920 at 30 fps with AAC audio, encoded with H.264 inside an MP4 container. Ready for Instagram Stories, Reels or TikTok with no re-encoding.

How it works under the hood

The browser's AudioContext decodes your file into raw audio samples. For every visualizer frame the tool sweeps a short window of samples around the playhead and converts the loudness into bar heights, which is why the bars breathe with the music rather than spiking on every peak. The whole render happens in the browser tab — nothing leaves your device.

Where it fits

The tool is free and standalone. No Storrito account is required. The MP4 you generate is yours to post however you like. If you'd like to schedule the Story video for a specific time, the main Storrito product handles that.

A note on copyright: the tool will render any audio you give it, but whether you can legally post the result on Instagram or TikTok depends on the rights to the music. Use your own recordings or a royalty-free library if you're not sure.

If you have feedback or run into trouble, reach out to support.