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Curated by: take U forward (548 videos)
When you hover over a video timeline on YouTube or Netflix, it instantly shows preview images - without any lag. So… does that mean the entire movie is pre-loaded? Obviously not. Welcome to Episode 2 of Learn Interesting Things with Striver. In this video, we break down how this actually works using: Sprite Sheets (thumbnail strips) Smart image extraction Assembly into grids Compression for faster loading And the VTT file that maps everything on the frontend It’s a simple idea, but a very clever optimization. If you’ve ever been curious about how platforms like YouTube and Netflix feel so smooth - this one’s for you. #striver #takeuforward #youtube #netflix #techtips #webdev #learnwithstriver