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Rhad ac am ddim 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.

Dim cyfyngiad maint ffeilMae ffeiliau'n aros yn breifatNid oes angen mewngofnodiAm ddim am byth
1. Audio (the soundtrack)

Drop an audio file

MP3, WAV, FLAC, OGG, AAC, M4A, Audio dim cyfyngiad maint ffeil

Pori ffeiliau
2. Cover image (shown the whole time)

Drop a cover image

PNG, JPG, WebP, Image dim cyfyngiad maint ffeil

Pori ffeiliau

Nid yw eich ffeiliau byth yn gadael eich dyfais. Mae'r holl brosesu yn digwydd yn lleol yn eich porwr.

💡 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

Sut Mae'n Gweithio

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.

Pam defnyddio ein un ni?

✓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

Offer Cysylltiedig

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Trawsnewidydd Uned

Trosi rhwng unedau o hyd, pwysau, tymheredd, arwynebedd, cyfaint, a mwy.

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Amgodio URL a Dadgodio

Amgodio a dadgodio URLs a llinynnau ymholiad. Cefnogi amgodioURICComponent, dadgodioURICComponent, a dosrannu llinyn ymholiad.

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Cywasgydd Fideo

Cywasgu ffeiliau fideo i leihau eu maint. Dewiswch ansawdd, datrysiad, a fformat allbwn. Mae'r holl brosesu yn lleol.

Rhowch gynnig arniFfeiliau aros yn lleol
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