I wouldn't even bother, the xbox is just too old of hardware at this point to handle anything decent for video streaming. And others have pointed out there's far better and very cheap devices that can do exactly that via kodi, plex, upnp, whatever you want.
Way back when the xbox was relevant XBMC was awesome, I was running it well before there were windows binaries for it. Once HD content started to become the standard XBMC on the xbox was pretty much game over for me. Switched to an apple tv to jailbreak and run xbmc on, then eventually over the years moved to plex.
Basically, I wouldn't even waste my time trying to play videos on an xbox these days. Either buy a cheap android set top or stick, roku, fire tv, apple tv, whatever, and load kodi, plex, embry, pick your poison. (No kodi for ATV)