MP3 to MP4 Converter — Free, No Watermark
Turn a track of up to 10 minutes into a video: your picture on screen, an optional moving waveform, and an MP4 that YouTube accepts.
Free · No signup required · Your files stay private
What you can do with it
YouTube will not take an audio file. Give it your cover art and get a Full HD MP4 it accepts, with no watermark and no editor to learn.
Take a minute of the episode, add the moving waveform and post it square or vertical — something happens on screen, so the clip stops being a still image.
The picture fills the frame with a blurred copy of itself behind it, so the cover is never cropped, never stretched and never sits in black bars.
How it works
Upload your file
We put your picture behind the track, draw the waveform if you asked for one, and encode it as an MP4
Download the result
Frequently asked questions
Is it free, and is there a watermark?
It is free, there is no signup and nothing is written over your video. What you download is your picture, your track and — if you asked for it — the waveform, and nothing else.
Do I need a background image?
No. Without one you get a dark background, which is enough for YouTube and for a podcast clip. Add a picture and it fills the frame: a blurred copy covers the edges and the whole picture sits in the middle, so nothing is cropped away and nothing is stretched.
Which video size should I pick?
16:9 at 1920×1080 for YouTube, 1:1 for a square post in a feed, and 9:16 for Reels, Shorts and TikTok. Pick the one for the place the video is going — reframing later means losing part of the picture.
What does the moving waveform look like?
A wave along the bottom of the frame that moves with the sound, in the colour you choose. It is the strip you see on music channels, and it is the simplest way to show a viewer that the track is playing.
How long can the track be?
Up to 10 minutes. Drawing and encoding video costs many times more than converting audio, so we cap the length to keep the tool free and quick for everybody. For a longer track, cut the part you need first.
Which files can I use?
Any common audio file — MP3, WAV, M4A, FLAC, OGG — and a JPG or PNG for the picture. You get back an MP4 with H.264 video and AAC audio, the combination every player, phone and platform accepts.
Why is the video 25 frames per second?
Nothing on screen moves except the waveform, and 25 frames a second is already smooth for it. A higher rate would only make the file bigger and the render slower, and every platform accepts 25.
Do my files stay private?
Yes. Your track and your picture are processed on our own servers, deleted automatically afterwards and never shown to anyone. The download link is unguessable and is not listed anywhere.
Before you upload the video
All free to try, no signup.
Automate it
Every tool here is also available to AI assistants and developers via our MCP server and REST API.
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Customer Reviews
Perfect even with opera, jazz, etc. It's like a dream...🥹
Perfect même avec de l'opéra , Jazz etc... Comme un rêve ...🥹
It's a bit annoying that I have to select the conversion type every time, and my initial selection doesn't stick. Other than that, everything's fine.
קצת מעצבן שכל פעם צריך לבחור סוג המרה ולא נשאר מה שבחרתי ראשון חוץ מזה הכל טוב
If you want to analyze everything from the individual instruments to the vocal arrangements in a song, VocalRemover is exactly what you need. You can listen to every component of your song in detail. I don’t usually leave comments, but I decided to leave one here because I imagine that if someone has made it this far and has doubts or needs encouragement to use VocalRemover, they should go ahead and do it—they won’t regret it!!
Si buscás estudiar desde cada uno de los instrumentos hasta cada arreglo vocal de una canción, vocalremover es lo que buscás. Podés escuchar cada componente de tu canción al detalle. No suelo dejar comentarios, pero decidí dejar uno acá porque imagino que si alguien llegó hasta acá y tiene dudas y necesita ánimo para usar vocalremover que lo haga tranquilo, no se va a arrepentir !!
Really great—the best of the best
muy buenazo mejor de lo mejor
files
Converted in last hour
seconds
Wait time for a conversion
99.95 %
Uptime of last 30 days
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