Convert MP3 to MP4 for free, right in your browser. Drop a file, wait a few seconds and download. Add a cover image and the MP4 is ready for YouTube, TikTok or Instagram, which only accept video files.
Yes. The MP3 to MP4 Converter is free with no sign-up and no watermark. It converts on your device, so your file is never uploaded.
Convert MP3 to MP4 right in your browser. Files never leave your device, so there is no upload wait and no size queue.
Optional cover image
Shown for the whole video. Leave empty for a black frame.
Drop your MP3 file or tap to choose
Up to 1 GB. Converted on your device.
How the MP3 to MP4 converter works: drop a file, it converts on your device, download the result.
Drag it onto the box, or tap to choose it.
Your browser decodes and re-encodes it while a bar shows progress.
Preview it, then download a file named like the original.
YouTube, TikTok and Instagram only take video files, so a song, a podcast episode or a voice note has to become an MP4 before it can be posted. This page pairs your MP3 with one still frame and encodes the sound as AAC at 192 kbps.
The image is optional. PNG, JPG and WEBP work, fitted into a 1280 x 720 frame without cropping, so square album art sits centered and a 16:9 thumbnail fills the frame. Pick something readable at phone size, like the single artwork or the episode title.
The frame is written once per second, which keeps encoding light, but a two-hour recording still takes a while because your own device does the work. Leave the tab open until the download appears, and check the start and the end of the MP4 before you upload it.
YouTube, TikTok and Instagram reject audio files, so a song, a podcast episode or a voice note has to become a video before you can post it. This page is a free audio to video converter for that job: it wraps your MP3 in an MP4 with a still frame, and the audio itself is encoded as AAC at 192 kbps. Nothing is uploaded, so long recordings convert without a queue. For WAV or M4A sources, use the WAV to MP4 and M4A to MP4 pages, which work the same way.
Drop the MP3 first, then the cover, and press convert. Pick the image people should see while they listen: the single's artwork for a music upload, the show cover for a podcast episode, or a title card for a lecture. The file name of the MP4 matches your MP3, so a batch of episodes stays easy to sort before you upload them.
A single picture is the fastest way to get audio onto YouTube, but viewers on TikTok and Reels scroll past a frozen frame. If the track deserves visuals that change with the music, the music visualizer page builds a video from your audio with AI scenes, word-synced captions and a bars, linear or circular waveform. It runs in a FacelessGenie account and uses credits, and you see the cost before anything renders.
Drop the MP3 in the first box, then drop a PNG, JPG or WEBP in the cover image box. Press convert and the download is an MP4 that shows your image for the full length of the audio.
YouTube only accepts video. Add a cover image here, convert the MP3 to MP4 and upload the MP4. The image shows for the whole length of the audio.
It is a plain black 1280 x 720 frame with your audio. Adding album art, a podcast cover or a thumbnail makes it look far better in feeds.
Not on this page, which makes a still-image video. The music visualizer page turns a song or voice track into a video with AI-generated scenes and an optional waveform overlay, using credits from a FacelessGenie account.
No. It converts inside your browser, on your own device. Nothing reaches FacelessGenie or any other server.
Files up to 1 GB work. Long recordings simply take longer on slower devices.
Recent Chrome, Edge and Safari handle every format here. Firefox opens most audio. For MP4 problems, Chrome or Edge is the safest retry.