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Free tools › Audio and video

MP4 to AVI

MPEG-4 part 2 (Xvid) with MP3 sound: what a 2008 DVD player understands.

This one runs on your credits. MPEG-4 part 2 (Xvid) with MP3 sound: what a 2008 DVD player understands.

Sign in and get 500 free credits every month — enough for many files — then drop the file in the workbench and run mp4 to avi 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 MP4 to AVI

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

What happens to your file

The video is re-encoded as MPEG-4 part 2 tagged XVID with MP3 sound, because that is the pair the old hardware plays; H.264 in an AVI would open nowhere useful. Expect a file larger than the MP4 at the same look — the older codec needs more bits.

Questions

Why not keep H.264 inside the AVI?

Because the devices that ask for AVI mostly predate H.264. If you only need the .avi name for a modern editor, MP4 to MKV or MOV is the better route.

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": {
      "container": "avi"
    }
  }'

The same operation, video.convert — Anything playable becomes H.264+AAC in a faststart MP4 — or, by `container`, MOV, MKV, VP9+Opus WebM, or Xvid+MP3 AVI for old players. Plus the small edits: mute, rotate, flip, speed (the sound keeps its pitch), reverse (60 s at most), loop. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.