Category3 posts

Insights

The same caption drawn twice from the same style. Painted per word, the next word's outline and shadow cut a dark seam into the previous word's fill; painted per pass, the joins are clean.

August 12, 2026Why our captions renderer draws every word five timesPainting each word completely before moving to the next seems obviously right — until the strokes get wide and every word join grows a seam. The fix didn't touch a single paint function. It swapped two loops.

We wrap captions with the TeX algorithm — but the penalty is silence

August 3, 2026We wrap captions with the TeX algorithm — but the penalty is silenceGood captions don't break where the line runs out of room. They break where the speaker stops talking — and getting that right is an optimal line-breaking problem in disguise.

One photo, one +1 stop exposure push, wiped down the middle: on the left the push ran on the sRGB bytes and the sand, skin and blanket bleach out; on the right the same push ran in linear light and holds its colour.

July 12, 2026How we bring color-grading to social video in the browserWhy good color grading never touches the pixels you see — and how we run a cinema-grade pipeline live in a browser tab, then reproduce it exactly on export.