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Free tools › Audio and video

WebM to MP4

Screen recordings and browser downloads, into the MP4 editors and phones accept.

This one runs on your credits. Screen recordings and browser downloads, into the MP4 editors and phones accept.

Sign in and get 500 free credits every month — enough for many files — then drop the file in the workbench and run webm to mp4 there.

Pick a file below to see exactly what it would cost.

Sign in and run it — free credits included

More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.About the extension

How to convert WebM to MP4

  1. Drop the video.
  2. Nothing to choose.
  3. Press Convert and download the MP4.

What happens to your file

The video is decoded and re-encoded as H.264 with AAC sound in a fast-start MP4 — the one file phones, TVs, Windows, Macs and every browser play — at a quality most people cannot tell from the original.

WebM is what browsers record and what some sites serve; editors and phones often refuse it. The MP4 holds the same picture.

Questions

Why is my screen recording a WebM?

Browsers record in WebM because it is what they can encode without a licence. It plays in browsers and little else.

Do this in code

curl -X POST https://api.fylane.dev/v1/jobs \
  -H "Authorization: Bearer $FYLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "file_id": "<file id>",
    "operation": "video.convert",
    "options": {}
  }'

The same operation, video.convert — Anything playable becomes H.264+AAC in a faststart MP4 — or, by `container`, MOV, MKV, or VP9+Opus WebM. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.