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Merge videos

Join several video clips into one, in the order you choose.

Runs in your browser. Your file is never uploaded.

Merge videos into one MP4, in the order you choose

Merge Videos joins two or more clips end to end. Put them in order, choose the frame size and download one MP4. Clips don't have to match: a vertical phone video and a landscape camera clip can go in the same file, and each is fitted into the frame with black bars rather than stretched.

Joining happens in your browser, so a set of holiday clips or a multi-part screen recording is never uploaded, and there's no waiting in a queue.

Merge videos in short

Add two or more videos, then put them in order and choose the frame size: the first clip's, or a standard size such as 1080p, then select Merge and download one MP4. It's free, there's no sign-up, and it runs in your browser, so the file never leaves your device.

How to use Merge videos

  1. 1

    Add your clips

    Choose two or more videos at once, or add more after the first. MP4, MOV, WebM, MKV and phone videos can be mixed.

  2. 2

    Put them in order

    Use the arrows to move clips up and down. The top clip plays first.

  3. 3

    Choose the frame size

    Keep the first clip's size, or pick 1080p or 720p landscape, vertical or square. Every clip is scaled to fit without distortion.

  4. 4

    Merge and download

    Select Merge videos. The result is a single MP4 with the sound of each clip; clips without sound get silence so everything stays in sync.

Good to know

  • Clips of different sizes are fitted into the frame with black bars, never stretched.
  • Clips without sound get silence, so the picture and sound stay in step.
  • The first time you use an audio or video tool, your browser downloads our 31 MB processing engine. It's kept for next time, so later runs start straight away.
  • Processing happens on your device, so speed depends on your computer. A minute of 1080p video takes roughly one to three minutes on a recent laptop; phones are slower.
  • This tool runs in your browser. Very large files depend on your device's memory.

Common reasons to merge

  • Phone clips into one video

    Turn a day's worth of short clips into one video to share or keep.

  • Recordings split into parts

    Join a lecture, game recording or dashcam footage that the device saved as several files.

  • Intro and outro

    Add the same opening and closing clip to every video you post.

  • Compilations

    Combine highlights from several videos into one reel.

Why use ConvertFile

  • Mix sizes and formats

    Vertical, landscape and square clips, in different formats and frame rates, are matched to one frame and one format automatically.

  • Never uploaded

    Your video is processed by your own browser and handed back as a download. It isn't sent to our servers, so there's nothing for anyone to see, keep or leak.

  • No watermark, no sign-up

    The merged video you download is yours as it is: no logo stamped on it and no account needed. It's free for files up to 500 MB.

  • Files up to 500 MB free

    Clips up to 500 MB work without an account, and Pro raises that to 2 GB. Big files are read from your disk as they're processed, not loaded into memory first.

Supported formats

Opens
MP4MOVWebMMKVAVIM4V3GPMPEGWMVFLV
Saves as
MP4 (H.264)

Merge videos: common questions

How do I combine videos into one for free?
Add the clips here, put them in order, pick a frame size and select Merge videos. You get one MP4 with no watermark, and the clips are never uploaded.
Can I merge videos with different sizes or orientations?
Yes. Each clip is scaled to fit the frame you choose, with black bars where the shapes differ. Nothing is stretched or cropped.
Will the sound stay in sync?
Yes. Clips with no sound get silence for their length, so the audio of later clips doesn't drift ahead of the picture.
Can I trim the clips first?
Use Trim video on each clip first, then merge the trimmed files. Trimming without re-encoding is quick and keeps full quality.
Is Merge videos free?
Yes. Merge videos is free, works without an account and adds no watermark, for files up to 500 MB. Pro raises that to 2 GB.
Are my files uploaded to a server?
No. Merge videos runs in your web browser, so the file is read on your own device and never sent to ConvertFile.
Does Merge videos work on Mac, Windows, Android and iPhone?
Yes. It runs in any modern web browser, with nothing to install. Very large files work best on a desktop or laptop, because in-browser tools use your device's memory.

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