Untrunc
Developed by Open sourceFree, open-source tool that repairs truncated MP4, MOV, M4V and 3GP videos using a healthy sample.
Links open the official website of Open source. Data Recovery Mumbai is not the developer of this software.
What is Untrunc?
Untrunc repairs videos that will not play because recording stopped suddenly — a dead battery, a full card or a camera crash. You give it the broken video and a good video recorded by the same camera with the same settings, and it rebuilds the missing index.
This improved fork has a simple GUI on Windows, supports files over 2 GB and is free under the GPL licence.
Best for
- Camera, drone & dash-cam videos
- Recording stopped suddenly
- MP4 / MOV that will not play
Quick facts
- Developer
- Open source
- Category
- File Repair
- Platforms
- Windows, Linux, macOS
- Licence
- 100% Free
- Website
- github.com
What Untrunc can do
Reference repair
Uses a healthy video from the same device.
Large files
Handles videos bigger than 2 GB.
Formats
MP4, M4V, MOV and 3GP.
Windows GUI
Ready-made Windows builds with a simple window.
Open source
GPL-licensed and free.
Using it in 3 steps
-
1
Make a copy
Always work on a copy of the damaged file.
-
2
Repair
Run the repair — some tools need a healthy sample video from the same camera.
-
3
Check & save
Play the repaired file and save it to a safe location.
Pros & Cons
Pros
- Free and open source
- Very effective on truncated videos
- Windows builds available
Cons
- Needs a good sample video
- Not for every kind of corruption
System requirements
- Runs on: Windows, Linux, macOS
- A separate drive with enough free space to save the recovered files
- Check the official website for the latest version and full system requirements
Professional recovery in our Class 100 clean-room lab
| DIY software | Data Recovery Mumbai | |
|---|---|---|
| Deleted / formatted files | ||
| Clicking / dead hard disk | ||
| Burnt PCB / firmware fault | ||
| Dead SSD / RAID / server | ||
| Free diagnosis, no data – no charge | — |
Untrunc FAQ
Questions we often hear from customers who tried this software first.
Other File Repair software
Untrunc is a product of Open source. Data Recovery Mumbai is an independent data recovery lab and is not affiliated with the developer. All trademarks belong to their owners. Information is for guidance; check the official website for current features and prices.