Why turn audio into a video
Many platforms accept only video. YouTube, Instagram, TikTok, Facebook and messengers with video status all need an MP4, even if your content is a song, a podcast episode or a voice message. Converting audio to video solves this: the tool combines your sound with a picture and, if you like, a moving visualisation, and saves a standard MP4 file. The video is created in your browser. Neither the audio nor the image is uploaded.
Picture options
- Your own image: album art, a photo, a logo or a podcast cover. JPG, PNG and WEBP work. The image is fitted to the video size.
- A solid colour: simple and clean, good with a waveform on top.
- A gradient: the tool creates a simple background for you, useful if you have no image ready.
Formats for each platform
| Format | Size | Best for |
|---|---|---|
| 1080p (16:9) | 1920 × 1080 | YouTube, websites, high quality |
| 720p (16:9) | 1280 × 720 | smaller files, faster to create |
| Square (1:1) | 1080 × 1080 | Instagram and Facebook feed posts |
| Vertical (9:16) | 1080 × 1920 | TikTok, Reels, Shorts, status videos |
Animated waveform and spectrum
A static image is fine, but a moving element keeps viewers watching and shows that the video has sound. The tool can draw an animated waveform, which follows the shape of the sound, or a spectrum, bars that move with the frequencies. Both are drawn from your audio, so they react exactly to the music or speech. For speech, a calm waveform works well; for music, the spectrum is more lively.
Rendering time
The video is encoded on your device. A still image with no animation is fast. Animation needs every frame to be drawn and encoded, so a long podcast with a spectrum can take a while, especially at 1080p. For long content, 720p is a good compromise. Keep the tab open while it renders.
A few practical tips: for a podcast episode of an hour, a still image at 720p gives a small file that uploads quickly, and listeners rarely watch the picture anyway. For a 30-second music teaser for social media, use the vertical format with an animated spectrum, because movement makes people stop scrolling. For a full song on YouTube, use 1080p with the album cover and a calm waveform. Before you render a long file, make a short test with the first minute to check that the image is placed well and the animation looks right.
Need only a part of the audio for a short clip? Cut it first. If you have an MP3, the MP3 to Video page does the same job. For the opposite direction, taking the sound out of a video, use Video to Audio.