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Gratis Audio to Video

Turn an audio file plus a cover image into an MP4 — the standard way to upload a song, mix, or podcast to YouTube. Runs entirely in your browser.

Ingen filstorleksgränsFiler förblir privataIngen inloggning krävsGratis för alltid
1. Audio (the soundtrack)

Drop an audio file

MP3, WAV, FLAC, OGG, AAC, M4A, Audio ingen filstorleksgräns

Bläddra bland filer
2. Cover image (shown the whole time)

Drop a cover image

PNG, JPG, WebP, Image ingen filstorleksgräns

Bläddra bland filer

Dina filer lämnar aldrig din enhet. All bearbetning sker lokalt i din webbläsare.

💡 Combine an audio track with a still image to make a simple MP4 — the standard way to put a song, mix, or podcast episode on a video platform. Files stay in your browser; nothing is uploaded. (Keep total size under ~2 GB on this device.)

Optimize for your platform

Upload a Song to YouTubePost a Podcast Episode as VideoShare Audio on InstagramPublish a DJ Mix as VideoTurn a Voice Recording into a Video

Så här fungerar det

Video platforms like YouTube need a video file, not just audio. The standard trick is to show a single cover image for the whole track. This builds that MP4 with FFmpeg in your browser.

  1. 1
    FFmpeg.wasm loads once
    The WebAssembly build downloads on first use and is cached afterwards.
  2. 2
    You add an audio file and a cover image
    Both are read locally — never uploaded.
  3. 3
    FFmpeg renders the video
    The still image is looped for the full length of the audio (-shortest) and encoded to H.264 MP4 with the audio as an AAC track.
  4. 4
    You download the MP4
    The result is ready to upload to YouTube, Instagram, or anywhere that needs video.

Turn a song, DJ mix, or podcast episode into an uploadable video without sending your audio to a server — everything runs on your device.

Varför använda vårt?

✓Completely free — no hidden costs, ever
✓No account, email, or login required
✓Files stay on your device — processing happens in your browser
✓Works on any device — phone, tablet, desktop
✓No watermarks on any output
✓Browser memory limits may apply for very large files

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