In the video I see a 10Amp lab supply that collapses (voltage readout) when the motors spin up.
A collapsing supply is the same (for the ESC) as turning the supply off/on.
Note that the motors draw at least 10Amp (maybe 20A) each on startup.
And maybe 10Amp each when spinning with the added load of a propeller.
So that 10Amp supply is totally inadequate.
Volt-drop in the supply leads could make things worse.
You could try a 3S LiPo battery that can handle the current near the motors,
With the supply set to 12.0volt, and also connected.
Both these supplies might be able to power the setup.
Don't leave the supply permanently connected to the battery though (safety).
Leo..