Download MP4Joiner v3.8
MP4Tools 3.8 — released November 20, 2019 | Free & Open Source (GNU GPL)
Windows
Windows (32-bit installer)
(Runs on both 32-bit and 64-bit Windows; there is no separate 64-bit build)
Size: ~23 MB | .exe installer
Mirror (Terabox, third-party mirror — not the official source)
macOS
OS X 10.10 or later
(Intel build from 2019 · Apple Silicon support not officially verified)
Size: ~75 MB | .dmg disk image
Mirror (Terabox, third-party mirror — not the official source)
Source Code
GPL Licensed
For developers and advanced users
Build your own binaries
Mirror (Terabox, third-party mirror — not the official source)
What is MP4Tools?
The installer you are downloading contains the complete MP4Tools suite. This is a collection of open-source cross-platform tools tailored for MP4 manipulation.
*Note: Both tools are installed together to provide a complete video cutting and joining experience.
How to Install MP4Joiner
Run the Installer
Double-click the .exe (Windows) or .dmg (Mac) file. If Windows SmartScreen appears, click “More Info” & “Run Anyway”.
Follow the Setup Wizard
Accept the GPL License agreement and choose your installation directory. The process takes less than 30 seconds.
Launch & Join
Open MP4Joiner from your desktop or Applications folder and start merging your MP4 clips instantly.
File Integrity Check
Verify your download using these SHA-256 hashes to ensure the file hasn’t been tampered with:
* How to check? Use Get-FileHash in Windows PowerShell.
📜 Release Notes & Change Log
Stay informed about the latest improvements and bug fixes in the MP4Tools suite.
MP4Joiner v3.8 LATEST STABLE
Released: November 20, 2019- ✔ Audio settings on re-encode: MP4Joiner can now specify the audio sample rate and bitrate when re-encoding.
- ✔ Keyframe-only splitting: MP4Splitter can now split on keyframes only (off by default).
- ✔ Drag & drop: MP4Splitter adds drag & drop support.
- ✔ FFmpeg update: Bundled FFmpeg updated to 4.1.1.
- ✔ New translations: Added Korean and Sinhala translations, among others.
Looking for older versions? Our archive includes v3.7 and v3.6 for legacy 32-bit systems (Windows XP/Vista).
Quick Fixes for Common Issues
Having trouble downloading or running MP4Joiner? Check these solutions.
🛡️ Windows “Protected Your PC” Message
This occurs because MP4Joiner is a free open-source tool without an expensive corporate digital signature. It is NOT a virus.
🍎 macOS “Unidentified Developer”
macOS may block the app because it wasn’t downloaded from the App Store.
⚙️ Error: “Missing msvcp140.dll”
Some systems may lack the necessary Microsoft Visual C++ Redistributable components.
🚫 Anti-Virus False Positives
Heuristic scanning occasionally flags open-source installers.
Ready to Start?
Get the latest stable build of MP4Joiner and start merging your clips in seconds.
↑ Back to Top & Download NowCompliance & Redistribution Notice
MP4Joiner is a part of the MP4Tools suite, a free software project created by Alex Thüring. It is released under the GNU General Public License (GPL), which allows for free redistribution and modification.
This website (mp4joiner.com) is an independent resource site. Its download buttons link to the official SourceForge files for MP4Tools 3.8, with a clearly labelled Terabox mirror as a backup. We do not modify the software code. For full source code, please refer to the download section above.
Windows and the Windows logo are trademarks of the Microsoft group of companies. macOS is a trademark of Apple Inc. All other trademarks are the property of their respective owners.
Need more than joining?
MP4Joiner only joins and splits MP4 files — it does not convert formats, compress video, or edit clips. If you need those features, consider a full video converter instead:
Wondershare UniConverter (affiliate link) — format conversion, compression and editing in one paid tool.
Movavi Video Converter (affiliate link) — another paid option for converting and compressing video.
Both links above are paid affiliate links — we may earn a commission at no extra cost to you. MP4Joiner itself remains free and open source.