LMH1251 (YPbPr TO RGB)

Y Video IN = 0.7 VPP , PBPR Video IN = ±350 mV but wouldn't the input caps block DC making them all 0.7V p-p ? (or well 1V Y inculding sync). Anyway, I wanted to try this on a ColecoVision or a Bally Astrocade. I'm not sure it would work since it's says it supports 480 not 240 or lower. Assuming the sync summing is correct then this would be cheaper than other methods involving op amps and the LM1881 which is nice and all except for the fact there is only RGB out and not YPbPR as well, This could be remedied with another THS7374 on the input section that splits the YPbPr. Keep in mind the outputs from an Astrocade or Colecovision are way above 700mv p-p or even 1v p-p