This is a weird question. Why does MPEG H.264 treat the color red the
way it does? I noticed this in U2's beautiful day video, it's even
more pronounced in the Kim Possible episodes. The red shows heavy
pixilation more than other colors.
Pure red seems to be the bête-noire of most codecs out there actually,
not just H264. I've seen the typical pixelation on almost any codec of
recent vintage when it comes to highly saturated reds. The only way
around it is to bump up the bandwidth for that section, but even
still... MPEG-2, MPEG-1, H264, Sorenson, etc. all have issues.
This is due to chroma subsampling. The colour has lower resolution than
the luminance.
As Y = .11 B + .3 R +.59 G, you get more pixellation in red and blue
than green. Very bright blues are rarer than bright reds, so you see it
more on reds.
