Merge Multiple Video Clips into One Merge multiple video clips into a single video file in your browser.

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Video Merger

Merge multiple video clips into a single video file in your browser.

Upload Videos

Drag and drop multiple video files or click to browse.

Arrange Order

Drag to reorder clips in your preferred sequence.

Merge & Download

Click Merge and download your combined video.

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What Is Video Merger?

The Video Merger is a free browser-based tool that combines multiple video clips into a single uninterrupted video file. Upload several clips, arrange them in your preferred order, and merge them into one continuous video. It's ideal for combining video chapters, joining split recordings, or creating compilation videos. The tool plays each clip sequentially through an HTML5 Video element, captures frames via Canvas, and records the combined output using MediaRecorder. All processing happens locally in your browser — no files are uploaded. Audio from each clip is preserved and merged in sequence.

Why Use Video Merger?

Combine any number of video clips into one
Drag-and-drop reordering of clips
No uploads — all processing on your device
Preserves audio from all clips

Common Use Cases

Compilation Videos

Combine multiple short clips into a single compilation video.

Rejoin Split Files

Merge video files that were previously split into parts.

Multi-Camera Edits

Stitch together footage from different cameras into one sequential video.

Content Creation

Join intro, main content, and outro clips into a complete video.

Technical Guide

The Video Merger loads each clip using HTML5 Video elements. Between clips, the current video source is swapped in real time. Audio from each clip is captured via Web Audio API by creating a MediaElementSource for each video and routing to a MediaStreamDestination. The Canvas stream and audio stream are combined into a single MediaStream for recording. The tool handles different resolutions by scaling all clips to match the first clip's dimensions. Transition handling ensures no gaps between clips by precisely managing video playback and recording events.

Tips & Best Practices

1
Clips with the same resolution merge most smoothly
2
The output resolution matches the first clip
3
Processing time increases with total combined duration
4
Reorder clips by dragging before merging

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Frequently Asked Questions

Q Can I merge videos of different formats?

Yes, you can mix MP4, WebM, and other browser-supported formats. The output uses a single format.

Q Is there a limit on number of clips?

No hard limit, but more clips mean longer processing time. Keep total duration reasonable for best performance.

Q Do the clips need to be the same resolution?

Ideally yes. Different resolution clips are scaled to match the first clip's dimensions.

Q Is the online video merger private?

Yes. All merging happens locally in your browser — no files are uploaded anywhere.

Q Is audio preserved when merging videos?

Yes, audio from each clip is preserved and played in sequence in the merged video.

About This Tool

Video Merger is a free online tool by FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration or installation required.