MP3 to MP4
Turn an MP3 into an MP4 video with a picture or a plain background, ready for YouTube. It’s free, with no watermark.
Drop an MP3
Then add a picture or a color, and bars that move with the sound if you like. Nothing is uploaded.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to convert MP3 to MP4 online
Open an MP3, add a cover image or pick a background color, and save an MP4 that plays the song over it. The MP3 to MP4 converter runs in your browser on Windows, Mac, or a phone, with nothing to install and no upload.
Step 1
Choose your MP3Pick a file or drop it into the converter above.Step 2
Add a pictureAdd an image or pick a background color.Step 3
Download the MP4Save the video when it finishes.
What to expect
- Supported inputs
- MP3 files, and any other audio or video with sound this browser can read. Pictures can be PNG, JPEG, or WebP.
- What happens
- The sound plays over a still picture for its full length. MP3 audio is encoded as AAC (MP3 where the browser has no AAC encoder); AAC audio is copied as it is.
- Limits
- One sound file at a time. The picture stays the same for the whole video; use Add audio to video to put a song under moving footage.
Your files stay on your device
Your computer does the work, so the file never has to be uploaded, and that’s also why it’s free: there’s no server time for us to pay for. You don’t need an account, and nothing you make gets a watermark.
“Needed to do a quick video edit with a cover to put a song on youtube. The tool was perfect and easy. Cheers from Brazil!”
Questions
Add a cover image, keep the landscape or picture shape, and save the MP4. YouTube takes it like any other video.
Yes, as AAC at 192 kb/s, which every player and site reads. At that rate, the difference from the MP3 is very hard to hear.
Yes. Skip the picture and the video shows the background color you choose.