This article explains how to crop or trim videos using Google Photos. It also includes information on using YouCut to cut or slice videos, and Kinemaster or Adobe Premiere Rush to create a multi-layer video masterpiece. This information applies to stock Android phones and Samsung phones.
How to Edit Videos on Android (COMPLETE Beginner's Guide!)
The Google Photos app on Android gives you the ability to trim or crop videos you record with your camera app. If you don't already have the Google Photos app on your device, install it from the Google Play Store.
These steps will teach you how to crop videos using the Google Photos app on Android.
Open the Google Photos app on your Android device and find the video you want to edit. The video you want to edit must be saved on your Android device.