This challenge holds a hidden word in morse code in Xero.
Being able to realize the coding method gets you through the key step. It’s common to use morse code with flashlight; the flashing Xero is a hint. 
The Morse code is embedded in the clip. Any video player can be used  to decrease the speed of the video. Other common software that separate the video frame by frame could also be useful. 
Now that you have the frames of the clip, solve for the letters of the flag. Every DOT lasts 15 frames and every dot 5 frames. By now, you will have the letters of this flag. 
The next puzzle you will need to solve is unscrambling the letters. Initially you will have  “ayrobopl” but that doesn’t make sense. 
There are a couple of ways in which you might be able to reach the right answer. A simple method is typing the word several times which will leave you with: "ayroboplayroboplayroboplayroboplayrobopl".
Now you can see “roboplay”, you have captured the flag.