I've learned a lesson for today, 08 September 2017 5:32 AM. Never USE VLC Player to screencast or save your desktop activities. It took around 435GB of hard drive or hard disk space from the laptop that I am using.
Use other software in capturing or grabbing desktop activities especially videos.
Check your hard drive or hard disk space before capturing your desktop activities in order to avoid hassles when you are converting your raw video file into a movie file already.
Enable Storage Sense by turning it ON under the Settings - System - Storage module of your Windows 10 PC or Laptop.
You can use YouTube
You can use Screencast-O-Matic
You can use the Built-In Screencast Recording Tool of Windows 10 by pressing Win + G and then press Win + Alt + R which is part of Xbox integration known as Game Bar
You can use Ezvid
You can use CamStudio
BUT I've used BB FlashBack Recorder which is my personal preference
A screencast is a digital recording of computer screen output, also known as a video screen capture, often containing audio narration.
The term screencast compares with the related term screenshot; whereas screenshot generates a single picture of a computer screen, a screencast is essentially a movie of the changes over time that a user sees on a computer screen, enhanced with audio narration.