So I illegally downloaded the video from YouTube; it appears to be 2657084 bytes, so 2657084/3.5 is 759166 bytes per second or 6073328 bits or 5.8 megabit per second. Reporting that as a maximum rate of 50 megabit seems ... a little "Comcastic". Or am I missing something?
Update: I see another article calling it a 175 megabit transmission so if that took 148 seconds that's an average rate of 1.2 megabit. It's a mystery to me why average throughput is just not interesting to the author of the original article. And presumably the downvoting I'm getting is from a similar sense of vapid apathy about intriguing detail.