Do I need a cover image?

No. The image is optional. If you add one it shows for the whole video; if not, Sondra uses a plain dark background.

Is my file uploaded to a server?

Never. Everything runs locally in your browser. Your files never leave your device.

Will the audio quality stay the same?

The audio is re-encoded to AAC at a high bitrate, so it sounds essentially the same as the original.

How long can the audio be?

As long as you like, within the file size limit. Longer tracks just take a bit more time to process.

Which formats can I use?

Audio: MP3, WAV, AAC, FLAC, M4A and OGG. Image: JPG, PNG, WEBP and BMP. The result is saved as MP4.

Yes. Turning audio into video on Sondra is free, with no signup and no watermark.

Can I do this on my phone?

Yes. Sondra works in mobile browsers, with files up to 100MB on mobile and 500MB on desktop.

Why is the frame rate low?

The picture is a still image, so a low frame rate keeps the file small without changing how it looks. The audio plays at full quality.

Does it work without internet?

After the page has loaded once, the work runs offline in your browser. You only need a connection to open the page the first time.

Audio to Video - Turn MP3 into MP4

Turn a song or audio file into a video with a cover image, ready to upload anywhere video is required. Free, private, and in your browser.

Audio file

Cover image · optional

Add a cover image, or leave it out for a plain dark background.

Add an audio file to continue.

Fast 100% private Free

How to turn audio into video

Add your audio

Drop in or pick the MP3 or audio file you want to turn into a video.

Add a cover (optional)

Choose an image to show, or skip it for a dark background.

Download

Save your MP4, ready to upload.

Why turn audio into a video?

Many platforms only accept video. To share a song, a podcast episode, a mix, or any audio on YouTube and similar sites, it has to be a video file. Turning your audio into an MP4 with a still image is the simplest way to get it there.

Sondra loops a cover image under your audio at a low frame rate, so the file stays small and the sound quality is kept. If you do not add an image, it uses a clean dark background. Either way you get a ready-to-upload MP4.

It works with MP3, WAV, AAC, FLAC, M4A and OGG audio and common image formats, adds no watermark, and runs entirely in your browser, so nothing is uploaded.

What you can do with audio to video

Turning audio into a video opens up the platforms that only take video. Here are the most common uses.

Upload a song to YouTube

Put a track on YouTube with your cover art as the picture.

Share a podcast

Post an episode as a video so it can go where audio cannot.

Make a music visual

Pair a mix or beat with artwork for a simple visualizer.

Audiograms

Turn a clip of a talk or interview into a shareable video.

Audio to video for any platform

An MP4 with your audio plays everywhere video is accepted. A few notes for the most popular places.

YouTube

Upload a song or podcast with your cover art as the video.

Instagram and TikTok

Get audio onto video-only feeds with a still image.

Facebook

Share a track as a video post.

Websites

Embed audio as a small MP4 where a player is easier to drop in.

Private by design

Most online audio to video tools upload your file to a server first. Sondra does not. All the work happens inside your browser on your own device, so your audio and image are never sent anywhere and nobody else can see them.

That also means there is no waiting for a long upload, no account to create, and no limit on how many videos you make. Close the tab and nothing is left behind.