The testdata files were created by: cwebp video-001.png -o video-001.webp dwebp -pgm video-001.webp -o tmp.pgm convert tmp.pgm video-001.webp.ycbcr.png rm tmp.pgm LGTM=r R=r CC=chaishushan, golang-codereviews https://golang.org/cl/91700044
code.google.com/p/vp8-go This is a straight copy, followed by import path updates. LGTM=r R=r, mirtchovski, oleku.konko CC=golang-codereviews https://golang.org/cl/79320043