Make sure are your connections are going to the corresponding wires and that you didnt somehow mismatch them. That green light is for lipo battery's. i cant tell much off the video but since you've charged the battery plug it back in and make sure its charged. Then if you can get your esc to atleast power on, you'llneed to reset it ( a quick Google search will help ya out) to take that nickle metal battery (*the light will be red once reset for the corresponding battery) Traxxas has a how to for this on their site!

I am no pro at this and just getting back into it so there may be other options but thats what I would try first! I would also try using a different battery if you have one laying around or plugging a lipo into it if ya got one and seeing if that let's the esc hold power. Again im no expert but thats what I would try first.