Audio to video. Turn an MP3 or any song into an MP4 with your cover art, for YouTube, TikTok, Reels and Instagram, free, in your browser.

Questions

How do I convert an MP3 to an MP4 for free?

Drop the MP3 into this page, add a picture if you want one, choose the shape and press Download. The MP4 is made in your browser: no watermark and no upload, and downloading asks for a free account.

Can I upload an MP3 to YouTube, TikTok or Instagram?

Not directly: they only take video. Converting the song into an MP4 with a still picture is the usual way to post music there, and that is what this tool does.

Is my audio uploaded?

No. The audio and the picture are read inside your browser tab and the video is made there. Nothing is sent to a server.

Does it change the sound?

The soundtrack is encoded as AAC, the format every video site expects, at the song's own sample rate. Songs longer than ten minutes are cut to the first ten.

What size picture should I use?

Any. A square cover is shown whole in every shape, with the background colour around it. For a picture that fills the frame, use one in the same shape as the video.

Which browsers work?

Current Chrome, Edge, Firefox and Safari 16.4 or later make the video faster than the song plays. Firefox for Android and older Safari record it in real time, so keep the tab open until it finishes.

Can I post the video?

The video is yours to post. Only use audio and pictures you have the rights to: converting a file doesn't change who owns it.