Video Merger
Merge Video Online For Free. Merge multiple videos into one without re-encoding. No upload required. Supports MP4, WebM, AVI, MOV.
Add Video Files
Click to browse or drag and drop multiple video files
How the Video Merge Tool Works
Combine multiple video clips into a single file while controlling transitions, quality, and output format—all directly in your browser.
1. Add your video clips
Drag and drop multiple video files into the upload area or click to browse. The tool reads basic information such as duration, resolution, and file size for each clip.
2. Arrange order & choose settings
Reorder clips, choose transition type, quality, and output format. You can also normalize audio levels and match resolution across all clips for a consistent look.
3. Merge and download
Start the merge process. Once completed, preview the merged video, check its duration, resolution, and size, then download the final file.
Key Features & Benefits
Stitch together intros, outros, highlights, and separate clips into a single polished video without installing heavy editing software.
Drag-and-drop ordering
Change the order of clips by simply dragging and dropping them in the list to match your desired sequence.
Flexible transitions
Choose hard cuts, smooth crossfades, or fade-to-black transitions to create the right pacing between clips.
Quality and format control
Export in MP4, WebM, MKV, AVI, or MOV, and choose between high quality, balanced, or smaller file sizes.
Consistent audio levels
Normalize audio between clips so that dialogue, music, and sound effects stay at similar loudness across the merged video.
Local, private processing
Merging is done with FFmpeg.wasm in your browser. Your video files are processed locally and are not permanently stored on our servers.
Free to use, no watermark
Merge as many videos as you like without sign-ups, subscriptions, or watermarks added to your final export.
Frequently Asked Questions
Common questions about merging multiple video clips into a single file in your browser.
The merge tool uses a WebAssembly build of FFmpeg that runs inside your browser. Your files are processed locally and are not permanently stored on our servers.
Yes. The tool can scale and pad videos to a consistent resolution and re-encode them into your chosen output format. This helps ensure the final video plays smoothly.
Video encoding is CPU‑intensive, especially for long clips, many files, or when transitions and resolution matching are enabled. Processing time will also depend on your device performance.
When re‑encoding is required, there can be a small quality change. Choosing high quality and a modern output format like MP4 helps preserve as much detail as possible.
The tool may run in modern mobile browsers, but merging large or many video files can be demanding. For best performance, use a desktop or laptop computer.
No installation is required. Everything runs in your browser using WebAssembly. Just open this page, add your clips, configure the merge settings, and download the final video.