yeah, it has a lot of moirees because in video mode it samples the image at a much lower res than the optical low pass filter. since its most annoying manifest is chroma aliasing i usually use secondary color correction to get rid of (some of) it. other than that the only option i see (except blurring) is to use a "super resolution upscaler", which actually works better the more aliasing there is. i haven't tried it but i'm planning to.
basically it uses motion tracking to find blocks in the image that were shifted a subpixel distance in previous frames and fills in the in-between pixels using that. google it. i've tried "video enhancer" and it seems to work ok, though not great. i might write my own.
if the moiree is purple, which it often is, i just add green, and optionally remove some saturation. set the keyer to select only the very saturated purple pixels and add no feather or choke.