Meh.
1) could be the way the light is shining on that gigantic host -- this reminds me of all those "miraculous photos" from Bayside and Medjugorje. For all we know, in the festive NO atmosphere, there may be some kind of a strobe light or even disco ball present accounting for the rhythmic light pulsations
2) even if it were not just a light trick, these types of "miracles" are easily simulated by the devil, and even the ones where hosts might bleed of "become flesh" ... it's very simple for the devil to swap out a host
Why would the devil do this? To persuade people of little faith that the NOM is legitimate and pleasing to God and valid. And it's having precisely that effect.
Catholics don't do theology based on "miracles" but evaluate the miracles against Catholic theology. One of the first things the Church examines with regard to private revelations is the orthodoxy of the messages. If there's even a hint of heterodoxy, the Church refuses to accept them.
Sadly, we have even a lot of Trads using these miracles as evidence for the NOM being valid (even Bishop Williamson has taken them that way). Even IF the NOM were valid, I don't believe that God would work these miracles if in fact, as we hold, the NOM is Protestantized bastard Mass (with the Catholic Offertory replaced by a тαℓмυdic blessing) that displeases God and harms souls ... because that would encourage people to believe that God approves of the NOM.