High Efficiency Video Coding, or HEVC for short, is a way to make videos take up less space on your computer, phone or tablet. It works by taking the pictures and sound that make up a video and making them smaller without losing too much quality.
Think of it like when you have to pack for a trip. You want to bring all your favorite toys and clothes, but you only have limited space in your suitcase. So, you try to fit as much as you can by folding your clothes very tight and organizing them neatly. HEVC does something similar with videos, it fits as much as it can into a small space.
HEVC is like a super-smart person who knows how to compress videos in a special way. It uses this knowledge to make a video file smaller so that it takes up less space on your device or it can be sent or downloaded faster, which is super-important when you want to watch something quickly.
So, the next time you watch a video on your phone or tablet, you can thank HEVC for making it possible!