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Free tools › Audio and video

Merge videos

Clips of any size and format, one after another, in your order.

This one runs on your credits. Clips of any size and format, one after another, in your order.

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

  1. Sign in — 500 free credits a month.
  2. Drop the clips; drag them into order.
  3. Run Merge and download the MP4.

What happens to your file

Each clip is first brought to the first clip’s frame size — letterboxed, never stretched — at 30 frames a second with H.264 and AAC sound (a clip with no sound gets silence, so the join stays in sync), and the pieces are joined without touching them again. One MP4, the clips in your order, ten minutes at most all together.

Media processing costs real compute per minute, so it runs against your own credits, the first 500 each month free.

Questions

Different sizes?

The first clip sets the frame; the others are fitted inside it with black bars, never stretched. Put the largest first.

A transition between clips?

Not here — a hard cut. An editor adds fades.

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.merge",
    "options": {
      "file_ids": [
        "<second file id>"
      ]
    }
  }'

The same operation, video.merge — Up to ten clips joined end to end into one MP4 — each brought to the first clip’s size (letterboxed, never stretched), 30 fps, a silent track where a clip has none. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.