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Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

image-processing

YCbCr and why video uses it

taught

Separating luma from chroma using BT.601 weights, and why chroma subsampling saves bandwidth with little visible loss.

Taught in

Requires

Local knowledge map

Local knowledge map

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Solid arrows are required prerequisites; dashed are recommended or helpful. Lower rows are more foundational. Click any box to jump to that concept.