Скачать или смотреть How YouTube Creates Video Preview Thumbnails

In this video, we break down how YouTube generates preview thumbnails using sprite sheets.

FFmpeg command to extract frames (1 frame every 3 seconds, high quality):
ffmpeg -i video.mp4 -vf "fps=1/3,scale=90:160" -q:v 1 frame_%02d.png

FFmpeg command to combine frames into a sprite sheet:
ffmpeg -i frame_%02d.png -filter_complex "tile=5x5" sprite.png

What you’ll learn:
How to extract frames from a video automatically
How YouTube-like preview images are generated
How to convert frames into a single sprite sheet
Backend logic YouTube uses before frontend magic

This is exactly how large platforms optimize video previews efficiently.

#ffmpeg #youtube #spritesheet #videopreview #backend #webdev #shorts #coding #ffmpegtutorial #developer