On the Samsung Galaxy S7 Edge, you will not be able to find a video editor for editing your videos. This is not installed from factory. Luckily, you can add it later on your Samsung Galaxy S7 Edge.
We explain how this works:
Navigate on your smartphone as follows:
Home screen --> App Menu --> Galaxy App Store
Within the app store of Samsung please select: For Galaxy --> Galaxy Essentials
Scroll down until you can see the "Video Editor". Tap this and you can install it on your Samsung Galaxy S7 Edge. You can then open the app from the app menu and edit videos with it.
You now know how to add and use the video editor of the Samsung Galaxy S7 Edge. Have fun with recording and editing your videos.