Vidsembly
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Video Tools

Video Merger

Merge video clips directly in your browser. Upload two or more clips, arrange the order, then export one combined video. Your files stay on your device. Free to use with no account or card needed.

Drop video clips here

Add 2 or more clips in order. Best with matching MP4 or WebM files

  • Free to use
  • No account required
  • Files stay in your browser
  • Reorder clips before merging
  • Export one combined video

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Frequently asked questions

How do I merge videos online?
Upload two or more video clips, arrange them from top to bottom, then click Merge videos. When the merge finishes, download one combined video file from your browser.
Is this video merger free?
Yes. This video merger is completely free with no account, card, or software install required.
Are my video files uploaded to a server?
No. Merging runs locally in your browser using FFmpeg compiled to WebAssembly. Your video files are not uploaded to Vidsembly or any third-party server.
What video formats can I merge?
Common formats including MP4, WebM, MOV, AVI, MKV, M4V, WMV, and other video files are accepted. For best results, use clips with the same format, codec, resolution, and frame rate.
Can I change the order before merging videos?
Yes. Add your clips, then use Move up and Move down to set the final playback order before exporting the merged video.
Will merging reduce my video quality?
The merger uses stream copy when the clips are compatible, so it avoids intentional quality loss. If clips use different codecs, resolutions, or frame rates, export may fail and you should create matching source clips first.
How many videos can I combine?
You can add multiple clips in one session. Browser memory and source file size affect performance, so shorter clips and matching MP4 or WebM files work best.

About this tool

Merge video without uploading files

This free video merger runs in your browser, so your footage does not need to leave your device just to combine clips. It is useful for lesson segments, creator drafts, client review clips, screen recordings, and internal training material.

Arrange clips in the right order

Upload your clips, preview them, then move each file up or down until the sequence is correct. The tool merges from top to bottom, which makes it simple to assemble an intro, main segment, and closing clip in one pass.

When to merge videos before editing

Use a browser video merger when you need a quick combined file for review, teaching, handoff, or light publishing. Use a full editor when the project needs transitions, captions, color correction, crop changes, audio mixing, or detailed timing work.

Best formats for browser video merging

MP4 and WebM files are the most reliable choices in modern browsers. For dependable exports, start with clips from the same camera, recorder, or editing preset so the format, codec, resolution, and frame rate match.

Private workflows for combined videos

Video projects can include student voices, client details, private dashboards, unreleased product screens, or creator drafts. Local browser processing helps avoid an extra upload step when all you need is one combined file.

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