I see it on the HDTV via HDMI out from the rMBP, yes. I don’t see it in the canvas or viewer, even at magnification. The problem only arises when I export to a QT file — doesn’t seem to matter the settings I use; have tried different codecs, sizes, maximum white-processing.
It is especially disgruntling as I have to do some matting with that background and I obviously can’t have some weird pattern giving away the matte lines 🙁