Drop files here
About Video Merger — Free Online Tool
Video Merger plays two to ten clips one after another and writes them out as a single MP4.
Joining uses ffmpeg's concat demuxer, which first tries to copy the streams straight through — when the clips came off the same camera or the same export preset, that produces the joined file quickly and without touching the picture. If they do not match, a single re-encode pass runs instead, and the result says which route was taken. Mismatched clips are not rescaled to a common frame size on this page, so footage shot at different resolutions is better resized before it gets here. When some clips have sound and others do not, the joined file comes out silent rather than with gaps in it.
Every clip is loaded into this one page and joined there. Nothing is uploaded, and the working copies inside the engine are deleted as soon as the run ends.
Stitching back together a recording that got split into parts, joining clips from one shoot in order, assembling a sequence of exported segments, and putting an intro in front of a main take.
Also known as: combine videos · join video clips · merge mp4s · stitch videos together · video joiner · put video together
When to use it
Stitch recorded webcam clips, webinar sections, and vacation footage together.
How it works
Concatenates video files using stream copying when formats match, or a single re-encode pass when streams differ.
Matching Video Dimensions
Clips should share the same resolution and frame rate for seamless joining.
How to Use Video Merger in 4 Easy Steps
Follow this simple guide to process your files in seconds directly inside your browser tab.
Select or Drop Your MP4/MOV/WEBM
Drag and drop your MP4/MOV/WEBM directly into the Video Merger workspace above or click 'Choose files'. You can process up to 10 files in a single run.
Configure Your Preferences
Adjust the available optimization sliders, target formats, or custom options. Stitch recorded webcam clips, webinar sections, and vacation footage together.
Instant In-Browser Execution
The client-side engine executes Video Merger locally on your device hardware with zero server latency and 100% private in-memory sandboxing.
Preview & Download MP4
Inspect the processed file, compare file size savings or output quality, and click Download to save the finished MP4 file directly to your disk.
Why Use Video Merger on ShortTrick
Engineered for maximum speed, strict privacy, and frictionless digital productivity.
100% Private & Local
Files processed with Video Merger never leave your computer or phone. Zero cloud uploads, zero tracking, and zero risk.
Blazing Fast Engine
Powered by compiled WebAssembly code running directly in your browser with sub-second execution for Video Merger.
No Paywall or Account Required
Video Merger is completely free with no hidden charges, watermarks, email signups, or artificial daily limits.
High-Fidelity Quality
Advanced algorithms preserve crisp vector text, clear colors, and structural layout integrity.
Generous 500 MB Size Limit
Handle files up to 500 MB and process up to 10 files in convenient batches with Video Merger.
Cross-Device Compatibility
Runs seamlessly in modern browsers on Windows, macOS, Linux, iOS (iPhone/iPad), and Android.
Supported Formats & Limits
Designed for high performance with browser-side memory guarantees.
500 MB
10
Frequently Asked Questions About Video Merger
Common questions regarding Video Merger, data privacy, file format compatibility, and usage limits.
Related Video Tools Tools & Popular Utilities
Explore complementary browser-based tools with zero file uploads and instant in-memory execution.
More Video Tools Tools
Popular Tools Across Other Categories
Related Reading & Tutorials
Guides, articles, and best practices for video tools workflows.