MP4Splitter: The Other Half of MP4Tools
MP4Splitter is the splitting program in the free, open-source MP4Tools suite by Alex Thüring — the same suite as MP4Joiner. There is no separate download: the single MP4Tools 3.8 installer installs both programs together.
Download MP4Tools 3.8 for Windows Download for Mac
Official files from SourceForge. Windows installer: MP4Tools-3.8-win32.exe (24,156,961 bytes). Mac: MP4Tools-3.8-MacOSX.dmg (78,631,443 bytes).
What MP4Splitter does
- Splits one MP4 file into multiple parts at points you choose, without re-encoding in the default mode.
- Keyframe-only splitting (added in 3.8): an option to split only at keyframes — it is off by default. Splitting at keyframes keeps each part independently playable; splitting elsewhere may require re-encoding.
- Drag-and-drop support for adding files (also added in 3.8).
- .mpg splitting (added in 3.7): MP4Splitter — not MP4Joiner — gained the ability to split .mpg files in version 3.7. Do not confuse the two programs’ format lists.
How to split a file
- Install MP4Tools from the buttons above (Joiner and Splitter install together).
- Open MP4Splitter and add your file (or drag and drop it in).
- Mark the split points on the timeline.
- If clean, independently playable parts matter, enable the keyframe splitting option.
- Start the split and find the parts in your chosen output folder.
Joiner vs Splitter: who does what
| MP4Joiner | MP4Splitter | |
|---|---|---|
| Job | Merges many MP4 files into one | Divides one file into several parts |
| Also does | Cutting; audio file joining (since 3.1); optional re-encode with CRF/preset and audio bitrate/sample-rate settings | Keyframe-accurate split option (3.8); .mpg splitting (3.7) |
| Installed by | The same MP4Tools 3.8 installer — one download, both programs | |
New to the suite? Start with How to join MP4 files, compare names in MP4Tools vs MP4Joiner, or get everything from the download page. Platform details: Windows · Mac · FAQ.