MP4Joiner
MP4Joiner is a free, lightweight tool for combining multiple MP4 video files into a single output file. It is designed for users who need to merge videos quickly without re-encoding, preserving the original quality and codecs. The app is part of the broader MP4Tools suite, which includes MP4Splitter for dividing videos. MP4Joiner works as a graphical frontend to the ffmpeg and mp4box command-line utilities, making complex video manipulation accessible to non-technical users.
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1 suggestionMP4Joiner has not been updated since November 2019 — over six years ago — and there is no evidence of a native Apple Silicon build ever being released. The Intel build still runs under Rosetta 2 today, but Apple is removing Rosetta in macOS 28 (September 2028), so this app will stop working entirely on that release. For merging MP4 files, consider switching to a more actively maintained alternative with native Apple Silicon support. FFmpeg itself (installable via Homebrew) is free and powerful if you are comfortable with the command line. For a graphical interface, Shotcut is a free, open-source video editor that runs natively on Apple Silicon and can merge video clips by placing them in sequence on a timeline. Commercial options like Final Cut Pro or Adobe Premiere Pro also handle multi-clip projects natively. If you prefer a dedicated joiner rather than a full editor, research modern alternatives or consider learning ffmpeg — it is the underlying engine MP4Joiner uses anyway, and learning the command line will give you more control long-term.
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