LibraTool logoLibraTool
🎬

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.

Geen bestandsgroottelimietBestanden blijven privéGeen aanmelding vereistVoor altijd gratis
1. Audio (the soundtrack)

Drop an audio file

MP3, WAV, FLAC, OGG, AAC, M4A, Audio geen bestandsgroottelimiet

Bestanden bladeren
2. Cover image (shown the whole time)

Drop a cover image

PNG, JPG, WebP, Image geen bestandsgroottelimiet

Bestanden bladeren

Jouw bestanden verlaten nooit je apparaat. Alle verwerking vindt lokaal in je browser plaats.

💡 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

Hoe het werkt

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.

Waarom de onze?

✓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

Gerelateerde tools

📏

Eenhedenconverter

Converteer tussen eenheden van lengte, gewicht, temperatuur, oppervlakte, volume en meer.

Probeer het
🔗

URL-encoder en -decoder

URL's en query-strings coderen en decoderen. Ondersteunt encodeURIComponent, decodeURIComponent en query-stringanalyse.

Probeer het
🎬

Videocompressor

Comprimeer videobestanden om hun grootte te verkleinen. Kies kwaliteit, resolutie en uitvoerformaat. Alle verwerking is lokaal.

Probeer hetBestanden blijven lokaal
Was deze tool nuttig?

Veelgestelde vragen