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Free tools › Audio and video

AVI to MP4

The Windows and camcorder format of the 2000s, into a file that plays today.

This one runs on your credits. The Windows and camcorder format of the 2000s, into a file that plays today.

Sign in and get 500 free credits every month — enough for many files — then drop the file in the workbench and run avi 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 AVI 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.

AVI often holds DivX or Xvid at large sizes; the MP4 is typically a fraction of the bytes at the same look.

Questions

Will the quality drop?

The picture is re-encoded once at a quality most people cannot distinguish; an AVI is usually already compressed, so nothing sharp is lost.

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.