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A SIMPLE WAY TO BRING CLIPS TOGETHER

Free Online Video Merger

From a few clips to one complete video. Free, and entirely on your device.

  1. 1Upload
  2. 2Arrange
  3. 3Merge
  4. 4Download

Drop your videos here

Bring your clips. We’ll bring them together.

MP4, MOV, WebM, MKV & moreChoose two or more videos to get started

Checking browser storage support…

Private by design

Your videos never leave your device.

Quality comes first

Matching clips merge at original quality.

No limits added by us

No file caps, watermarks, or accounts.

A QUICK GUIDE

How to merge videos online

Combine clips into one MP4 in four steps.

  1. 1

    Choose your videos

    Select two or more files, or drop them into the video joiner above.

  2. 2

    Set the order

    Drag the handles or use the arrows. You can add or remove clips before merging.

  3. 3

    Merge the clips

    Choose Merge videos. Keep this tab open while Splice processes your files locally.

  4. 4

    Save your MP4

    Preview the result, then download it. With direct saving, your chosen file is committed when the merge finishes.

Formats & compatibility

Splice reads containers including MP4, MOV, WebM, and MKV when their video and audio codecs are supported. The output is a streaming, fragmented MP4. A file extension alone does not guarantee compatibility.

Each clip must have one video track and at most one audio track. Extra audio, video, or subtitle tracks are reported as unsupported. Compatible H.264 or H.265 video and AAC audio can be copied; supported SDR clips that need conversion use H.264 video and AAC audio. Codec support depends on the browser.

Privacy & large files

Media processing runs in browser workers on your device. Splice does not upload your videos, add a watermark, or require registration.

There is no artificial application-level size limit. Free disk space, temporary storage quota, browser codec support, and device resources are the real constraints. Current desktop Chrome and Edge can write directly to a chosen file; the fallback uses browser-private disk storage.

Leaving or refreshing the page clears the local session. Save the finished video before navigating away. Conversion may take longer than the video’s playback time.

GOOD TO KNOW

Frequently asked questions

Does merging reduce video quality?

When codecs and stream configurations match, Splice copies the compressed streams without re-encoding, preserving their original quality. If video or audio needs conversion, it is re-encoded and quality can change. The tool reports the processing mode.

Can I merge MP4 files with different sizes or formats?

Supported, decodable SDR clips can be converted to the first clip’s display dimensions, with letterboxing to preserve aspect ratio. Different frame rates alone do not force conversion. HDR conversion, surround-audio conversion, and unsupported codecs are rejected with an explanation.

What happens if a clip has no audio?

If every clip is silent, the output has no audio track. If only some clips are silent, Splice adds silence in those sections while keeping the neighboring clips’ audio. Supported audio that needs normalization is converted to 48 kHz stereo AAC.

Is there a maximum file size or number of clips?

Splice adds no file-size or clip-count cap. The output must fit your device or browser storage, and large files can take time to read or convert. Direct saving in supported desktop browsers avoids temporary-storage quota constraints. Available disk space still applies.

Can I cancel a merge or leave the page?

Cancel merge stops the job and keeps your selected clips. A canceled job does not commit a partial replacement to a chosen destination. Navigating away or refreshing ends the session; the browser prompts before leaving an active merge. After processing, save your result before leaving.

Why won’t my finished video preview or seek in a player?

The browser must support the output codecs, and older players may have limited seeking support for fragmented MP4. Download the file and try a compatible player. H.264 video with AAC audio is a practical choice for broad playback support.

YOUR NEXT STEP

Find another way to work with your media.

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Remove Audio

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A quick introduction

A few clips. One video.

Four simple steps, all right here in your browser.

  1. 1
    Upload your videos

    Choose files or drop them into the tool. You can add more at any time. Duplicate files are skipped.

  2. 2
    Put them in order

    Drag a clip’s handle or use its up and down buttons. On a keyboard, focus a handle and use the arrow keys, Home, or End.

  3. 3
    Merge your clips

    Compatible streams are copied at original quality. When needed, supported clips are converted to H.264 and AAC. Conversion takes longer and can change quality.

  4. 4
    Download your video

    Preview your finished MP4 and save it to your device. Keep this tab open until your video is saved.

Your device sets the real limits.

There are no artificial file or count caps. Large videos need free disk space. Current desktop Chrome and Edge can save directly to a file; other supported browsers use temporary disk storage, subject to available quota.

No analytics, accounts, or video uploads. One video and at most one audio track per clip; additional tracks are reported as unsupported. Matching codecs are required for a lossless merge. Streaming MP4 fragments may have limited seeking support in older players.