[akupenguin]

Cool, a new codec is always good news.

Nitpick posted here because I don't see any method of feedback on the site:

from http://lags.leetcode.net/codec.html
Pixel values are first predicted using Paeth prediction (the same method used when "Predict Median" is selected in Huffyuv).

Huffyuv's prediction (which Lagarith also uses) is "median(L,T,L+T-LT)". Paeth (used in e.g. PNG) is "whichever of L,T,LT is nearest to median(L,T,L+T-LT)".