Merge Video
Merge multiple video files into one online, free and private. All processing in your browser.
How to merge multiple video files into one?
Click or drag your video files into the upload area, adjust the playback order by dragging items or using the Move Up/Move Down buttons, then click the Merge button. The tool will combine all videos into a single file directly in your browser.
Can I merge videos with different resolutions or formats?
Yes, you can merge videos with different resolutions and formats. The tool processes them and combines them into one output file. For best results, we recommend using videos with the same resolution, frame rate, and codec.
Are my video files uploaded to a server?
No. All video processing happens entirely in your browser using WebAssembly technology. Your files never leave your device, ensuring 100% privacy and data security.
What video formats are supported?
The tool supports all formats your browser can decode, including MP4, WebM, MOV, AVI, and MKV. The output format is typically WebM or MP4 depending on browser capabilities.
Is there a file size limit?
Since processing happens locally in your browser, the main limitation is your device's available memory. For smooth performance, we recommend keeping the total size of all videos under 2GB.
Do I need to install any software?
No installation is required. This is a completely web-based tool that runs in any modern browser. Just open the page and start merging your videos.
Can I reorder the videos before merging?
Yes, you can freely reorder videos by dragging them in the list or using the Move Up and Move Down buttons. The final merged video will follow your specified order.
Is this tool free to use?
Yes, this video merger is completely free with no limitations. There are no watermarks, no registration required, and no restrictions on the number of files you can merge.
Does it work on mobile devices?
Yes, the tool works on both desktop and mobile browsers. However, for large video files, we recommend using a desktop computer for better performance and memory availability.
How does browser-based video merging work?
The tool uses WebAssembly (WASM) and the browser's built-in MediaSource Extensions API to decode, process, and re-encode video data entirely on your device. No server-side processing is involved.
Will the original video quality be preserved?
The tool attempts to preserve the original quality as much as possible. However, some re-encoding may occur depending on the input formats. Using videos with matching codecs and settings yields the best quality.
Can I merge videos with audio tracks?
Yes, audio tracks from all input videos are preserved and merged along with the video. If a video has no audio, it will simply be silent in that segment of the merged output.
How to Use Merge Video
Combine multiple video files into a single clip, in order, right in your browser. Footage is processed locally and never uploaded.
- Open the Merge Video tool and add two or more video files, or drag them in together.
- Rearrange clips in the list so they play in the order you want.
- Remove any clip added by mistake using its delete control.
- Start the merge and wait while the files are joined into one.
- Download the combined MP4 and check that every section plays in sequence.
Clips with different resolutions or frame rates may be re-encoded; keep source settings similar for the cleanest result.
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