---
title: "How to turn audio into a video with a waveform | ToolSugar"
description: "Turn an MP3 or voice note into an MP4 with an animated waveform for social posts, in landscape, vertical or square, with optional captions."
canonical: https://toolsugar.com/blog/how-to-turn-audio-into-a-video
image: https://toolsugar.com/og.png
---

# How to turn audio into a video for social posts

Updated 2026-11-09

To turn audio into a video, put the sound over a picture and export an MP4. Audio to Video draws an animated waveform from your file, in landscape, vertical or square. It runs in your browser. Captions are optional. Turning them on transcribes the audio in your browser with Whisper, and nothing is uploaded either way.

[Open Audio to Video](https://toolsugar.com/tools/audio-to-video)

## Make a video from an audio file

Accepted inputs are MP3, WAV, M4A, AAC, OGG, FLAC or a video file, where only the sound is used.

1. Drop in an audio file.
2. Choose landscape, vertical or square.
3. Leave captions off to skip transcription, or turn them on to have Whisper write them on your device.
4. Make the video and download the MP4.

## Why platforms want a video

Many feeds accept only video files. A podcast clip, a song demo or a voice note has no picture, so the platform rejects it. Wrapping the sound in an MP4 fixes that.

## Which size to choose

Landscape is 1280 x 720 and fits most players. Vertical is 720 x 1280 for full-screen feeds on a phone. Square is 720 x 720. The file is H.264 video with AAC audio.

If you plan to post the same clip in two places, make it once in each shape instead of cropping the video afterward. Each size is rendered for its own shape.

## Post only part of a long recording

The video uses the whole file you give it. To share one moment from a long interview or episode, trim it with Audio Cutter first, then bring the short clip here.

## Add captions so people can follow it muted

Captions show the words on screen for people watching without sound. To make them, Whisper transcribes the audio in your browser, with a speech model that downloads on first use. Nothing is uploaded, and the transcript can contain mistakes.

A run with captions on counts toward the 5 free AI runs shared across tools in any rolling 24 hours. A run with captions off does not count.

## Questions

### Does the waveform match the sound?

Yes. It is drawn from your audio samples frame by frame, so quiet parts look quiet and loud parts look loud.

### Can I add my own photo or album art to the audio?

No. This tool draws a waveform on a dark background. Text to Video accepts a background picture.

### What format is the result?

An MP4 with H.264 video and AAC audio.

[Open Audio to Video](https://toolsugar.com/tools/audio-to-video)

## Related guides

- [How to turn text into a video with captions](https://toolsugar.com/blog/how-to-turn-text-into-a-video)
- [How to convert audio files to MP3, M4A or WAV](https://toolsugar.com/blog/how-to-convert-audio-files)
- [How to cut an audio file to the part you need](https://toolsugar.com/blog/how-to-cut-an-audio-file)
- [How to turn images into a video with a zoom or pan](https://toolsugar.com/blog/how-to-turn-images-into-a-video)