Audio to Video Converter
Turn any song, podcast, or recording into a real MP4 — free. Pick an animated beat-reactive scene, a clean black screen, a waveform, or your own photo. No watermark, no signup, nothing leaves your browser.
How do I convert an MP3 to MP4 for YouTube?
Upload the MP3, pick a scene — black screen and waveform are the classic YouTube choices — select 16:9, and press Generate. You get a real MP4 that YouTube accepts directly. For TikTok or Reels, pick 9:16 instead.
Is it really free, no watermark, no signup?
Yes to all three. The conversion runs entirely inside your browser — there's no server cost to pass on, and your audio never leaves your device.
Can I use my own picture as the background?
Yes — the Your Photo scene cover-fits any image to your format and adds a slow cinematic drift, so it looks produced rather than static.
What makes the scenes beat-reactive?
They listen to your actual audio: glows pulse on the kick, city windows flicker with the bass, the waveform bars are your real frequencies. It's generated from your song, not a stock loop.
Which browsers can export?
The preview runs everywhere. The MP4 export uses WebCodecs, available in Chrome and Edge (desktop and Android). On other browsers you'll see a notice instead of a broken download.
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