MP3 to MP4
Turn an MP3 into an MP4 with a cover image, ready for YouTube, Instagram or TikTok.
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How to convert MP3 to MP4
From a track to a finished MP4 in three steps
11. Upload your MP3
Drag the track onto the page or click “Upload”. Up to 1 GB per file, far more than a single track will ever need.
22. Add the cover image
Pick a JPG or PNG for the cover image. YouTube takes 1920 by 1080, while Reels and TikTok want 1080 by 1920.
33. Download and publish
The finished MP4 works on any platform that requires a video track, and the audio keeps the bitrate it already had.

No second round of compression
The MP4 container can carry an MP3 stream as it is, so the track is not encoded a second time. What you upload sounds exactly like the original file.

Almost the same size as the MP3
A single still frame compresses to almost nothing, so the video track adds very little. A four-minute track at 320 kbps comes out at about 10 MB with the cover image.
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