Instant Video Creator

Assemble Audio + Image to MP4

The fastest way to turn your music or podcasts into shareable videos. Just upload one image and one audio file, and we'll do the rest.

Instant Muxing
Local Processing
Universal Compatibility
Developer Access

Build with our Audio Image Assembler API

Integrate our high-speed conversion engine directly into your own applications. Get free api keys for audio image to mp4 api and more.

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High-Fidelity Audio

We preserve your original audio quality. Whether it's a 320kbps MP3 or a lossless WAV, your sound will be perfect.

Static Image Video

Create a solid video stream from a single image. Ideal for YouTube uploads where only audio and a cover matter.

Browser-Side Power

No cloud uploads needed. FFmpeg.wasm processes your files right in your browser, keeping your data private and conversion fast.