Hi, the difference in size you are seeing is because of the different video bitrates. The Ntb one has a slightly lower bitrate, so for videos that are about the same duration, this translates to a lighter file.
Whether or not you could perceive the difference amounts to your sensibility and experience with this kind of things as well as to your monitor.
This guy has such a toxic attitude and a ridiculous childish language.
This is the Level of PR he is capable of
Which loosely translates to "we are going to do whatever we want to users, mods and devs. If they take it, good. Otherwise fuck them".
What baffles me is that he does not seem to Get that reddit does not take its powers from the 90% of users who lurk on /r/funny and similari big subs. It's from the powers users and the mods who do god's work. If those go away, he can make reddit profitable by turning into Facebook and then watch it die.