No,settings were correct and it would show black out of the game,
However I see that it is ws2812 not WS2812
B, technically they are cross compatible, but ws2812 are more sensible to reverse polarity and would die more easily.
You can test your leds only on the hardware side using this method :
https://github.com/zegreatclan/SimHub/wiki/Arduino-WS2812b-RGBLEDS--Wiring-Setup#testing-your-leds
Make sure that simhub is not running when trying it, if it does not shows totally red it means something is wrong on the wiring/solder or the led bars themselves, it's easy to kill a solder pad when heating it for too long,
On another hand by inspecting a second time your video i could not see clearly if the wires were properly soldered on the arduino, do you have a better close up pictures ? Make sure to have clean and safe solders, most issues along wrong wirings are caused by this. You have an excellent guide here :
https://learn.adafruit.com/adafruit-guide-excellent-soldering/making-a-good-solder-joint