It's simple. A VOD (video on demand) system was playing MacGyver which never was shot in HD. So it's simple as pie. It's not going to be all HD since all content is not HD.
So how does one know what one is getting from a cable service? What is to prevent them from acting fraudulently? When a movie's format is changed when aired there is an announcement stating that. If cable service ports a local TV show that is HD in its OTA broadcast format but because it passes through the cable system that show is now in SD based on it being viewed on an old SD TV set , is it still the same show as what the original OTA broadcast intended? A few years back the public was told they had to have HD TV sets or a converter in order to view shows that were in HD format so now what comes out of the X1 box comcast/xfinity runs both HD and SD sets with out a converter. So how is that possible? It can't be real HD. Is it only sending out a compromised format? Will comcast/xfinity drop the HD channels and simply port only this compromised format or drop the SD channels by continuing this compromised format? Is all this of no importance because the X1 box has a HDMI port and as long as one uses the HDMI port all viewing is in HD? if so how does one know what is really coming out of the HDMI port? Is it real HD or some kind of SD compromised format? Are customers really getting what they are paying for?