I vaguely recall reading an old Protestant polemic against the RC Church which made a point of the existence of an icon depicting the same scene in some RC Cathedral in Italy.
Maybe this icon represents the influence of RC missionaries in Ethiopia? Or maybe it is simply not an icon created or held by the Ethiopian Orthodox Church at all? As far as I know, the RC, and even the Baptist Church in Ethiopia do their best to replicate the Ethiopian Orthodox's traditions. I recall reading how the Baptists there have begun adopting traditional Ethiopian Orthodox liturgical vestments as a means to more effectively proselytise laity. So, whilst on its surface this may look like a traditional Ethiopian Orthodox icon it could quite possibly be an RC icon.
Btw, I realise that the author of the youtube video introduced his video with the title, "Paintings on the Ethiopian church's walls", but i'm not sure how to take that really given that the very first image presented is neither a painting nor something to be found on a wall.