first one looks pretty crappy. how does the second one play? i think set top dvd players are CAV and if they are they speed does increase at the outer edge which could be the reason for the pixelization.
here are a couple of scans of the same piece of media to compare. my guess is that the dye is light in the outer edges and as mentioned before cmc is known for its variability. the last one is a ricohjpnr00. looks a bit better to me.