Moving Pictures

on YouTube ↗01h 11m

" summary

A rapid survey of formats and tradeoffs: shows images on pages average about 1 MB on mobile while 17 shared pictures totaled 64 MB (3.75 MB each), and Netflix cuts traffic by ~25% in hot zones during COVID. Details: legacy GIF/PNG/JPEG limits, Google’s WebP, new JPEG XL, and codec work AV1 → image format AVIF and AV1 (8/10/12‑bit, lossy/lossless, alpha, HDR, up to 4:4:4) give far better compression; YouTube uploads 500 hours/min and detects old clients (≈10%) that break heavy decoders. Cloudinary/ImageX and picture/srcset strategies are recommended.

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" chapters (9)

1. 0:00Start
2. 10:39Jpeg
3. 11:51Webp
4. 14:32Image Compression Is Critical to Digital Photography
5. 20:49The Image Format Split across the Web
6. 22:45Why Was the Jpeg Excel Created
7. 26:42Video Landscape
8. 29:58The Av-1 Codec
9. 37:22Choice Paralysis

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