The OpenShot Video Editor 2.4.0 has just been released. It is an open source, cross platform and free application that will help you edit your videos.
This update is available with a focus on stability.
It comes with improved stability, improved undo / restore history (now stored in each project file), new freeze and zoom package, updated translations, and too many bug fixes in general!
The application can run on Linux (most are supported distributions), Windows (version 7, 8, and 10+), and OS X (from 10.9+).
It uses the FFmpeg library, and can read and write to most video and image formats. View the list of all supported formats on its page FFmpeg project.
You can download the application on the platform that interests you from the link below:
http://www.openshot.org/download/
Look at them video presentation: