MP3 to MP4 Converter

Social apps and YouTube only take video, so a song, podcast episode or voice note needs a picture to go with it. Pick the audio, pick a picture, choose the shape for where you are posting, and tap Make MP4. You get a video with your picture on screen for the whole length of the audio. Everything happens inside your browser with ffmpeg, the open-source engine behind many video apps. Your file is not uploaded to our server.

MP3 to MP4 converter turning a song and a cover picture into a 16:9 video
A 30-second MP3 and a portrait cover turned into a 16:9 MP4 with a blurred background, in 5 seconds.

How to convert MP3 to MP4 with an image

  1. Tap Choose an audio file and pick your MP3, WAV, M4A or other audio file.
  2. Tap Choose a picture and pick the image to show: album art, a photo or a title slide.
  3. Pick the video size: 16:9 for YouTube, 1:1 for Instagram and Facebook posts, 9:16 for Reels, Shorts and WhatsApp Status.
  4. Tap Make MP4 and download the video when it is ready.

What if my picture is a different shape?

The picture is never stretched or cropped. It is placed in the middle and the empty space is filled with a blurred copy of the picture, which looks natural on YouTube and Instagram. You can choose plain black or white instead.

How long does it take?

The video uses a still picture, so it is quick to make: a 4-minute song usually takes well under a minute on a computer, a little longer on a phone. The audio is saved in AAC at 192 kbps, the format YouTube and Instagram expect.

Frequently asked questions

Can I upload the MP4 to YouTube?

Yes. The video is a standard MP4 (H.264 and AAC), which YouTube, Facebook, Instagram, WhatsApp and TikTok all accept.

Will there be a watermark?

No. The video contains only your picture and your audio.

Is there a length limit?

No fixed limit, but very long audio, over about an hour, can run out of memory in a phone browser. A computer handles long files better.

Can I use a song I don’t own?

Only if you have the rights to it. Platforms like YouTube may block or mute videos that use copyrighted music.

How do I turn a video back into MP3?

Use the video to MP3 converter.

More free audio and video tools

Scroll to Top