Video Merger
Join several video clips into one continuous file in the order you choose. Free, no signup, works in your browser.
Everything runs inside your browser — your file is never uploaded to a server.
First run downloads the media engine (~30 MB) once, then it stays cached.
About this tool
Combine multiple MP4, WebM or MOV clips into a single video without re-uploading anything to a server. Add your files, drag them into the order you want, and the tool stitches them together using FFmpeg running as WebAssembly right inside the tab. This is handy for merging phone recordings of the same event, joining intro and outro clips to a main video, or assembling several short screen recordings into one tutorial. Output keeps the resolution and audio of your source clips wherever possible, and you can preview the final order before running the merge. Because everything happens on your device, there is no queue, no file size cap tied to an account, and no watermark added to the result.
How to use this tool
1. Add your clips
Select two or more video files from your device.
2. Set the order
Drag thumbnails to arrange the sequence you want.
3. Merge the videos
Click merge and let FFmpeg combine them in your browser.
4. Download the result
Save the single combined video file to your device.
Why use this tool
Merging videos usually means installing editing software or trusting a cloud tool with your footage. This merger runs FFmpeg locally in your browser, so joining clips is instant, private and free, with full control over clip order and no software to install.
Tips & best practices
- Trim unwanted parts from each clip beforehand for a cleaner final cut.
- Keep clips in the same frame rate when possible to avoid stutter at the joins.
- Preview the order carefully since re-arranging after a long merge takes extra time.
Common use cases
- Combining several phone clips from a birthday party into one video.
- Joining an intro animation with the main body of a YouTube video.
- Stitching together multiple screen-recording segments into one tutorial.
- Merging drone footage clips shot in short bursts into a single reel.
- Assembling daily vlog clips into one weekly recap video.
Frequently asked questions
Do the clips need the same resolution?
No, but for the smoothest result it helps if they share a similar resolution and frame rate. Mismatched clips still merge, though the picture size may adjust between segments.
Can I reorder clips before merging?
Yes, drag and drop each thumbnail into the sequence you want before starting the merge.
Is there a limit on how many clips I can join?
There's no artificial cap, but very long combined videos need more memory, so keep total length reasonable for your device.
Will the merged video keep its original audio?
Yes, the audio tracks from each clip are preserved and merged along with the video in the same order.
Is my footage uploaded anywhere?
No, merging happens entirely in your browser using WebAssembly FFmpeg, so your clips never leave your device.
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