MP3 to MP4 with an image (and a visualizer that moves)
- Free 720p
- No sign-up
- Audio never uploaded
- MP4 · 16:9 & 9:16
In short: YouTube, TikTok and Instagram won't take an MP3 — they need a video. Add your audio and one image, and this tool makes an MP4 with the picture as the background, an optional audio visualizer and optional lyrics or title. It converts in your browser, so even long files aren't uploaded anywhere. Free MP4s are 720p with no watermark (adding lyrics adds a small one); HD passes start at $4.90 once.
Start from a look
Real frames from this editor. Click one, then drop in your song — every setting stays editable.
How it works
- Upload the MP3 (or WAV/M4A).
- Add one image — it fills the frame.
- Pick 'Lyrics only' for a still image, or any visualizer style.
- Export MP4.
Still image or animated?
Choose the 'Lyrics only' style and turn off Beat pulse for a plain image-plus-audio video. Turn on a visualizer for something that looks alive in the feed — it makes no difference to file size worth worrying about.
What you get for free (and what a pass adds)
| Free | Pass ($4.90 / 24 h, $12.90 / 30 days, $29 lifetime) | |
|---|---|---|
| Sign-up | Not needed | Not needed — pay once, the pass is stored in your browser |
| Song length | Any length | Any length |
| Resolution | 720p, 30 fps | 1080p (24 h) or 4K (30-day / lifetime), up to 60 fps |
| Watermark | None on visualizer videos; small corner mark on lyric videos | None |
| Formats | 16:9, 9:16, 1:1, 4:5 | Same |
| Lyric sync | Tap-to-sync, AI auto-sync (beta), LRC import/export | Same |
| Where it renders | On your device (WebCodecs) — the song is never uploaded | Same |
| Output | MP4 (H.264 + AAC) | Same |
See pricing for details. Passes are one-time payments, not subscriptions.
FAQ
How do I put an MP3 on YouTube?
Convert it to MP4 with an image here, then upload the MP4 to YouTube.
Is there a file size limit?
No server limit, because nothing is uploaded. Very long files (1 h+) need a computer with enough memory.
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