Hi you could upload a static image or two rather than a video.
The charger and cable are most often the issue and can have a dramatic effect on charging from 1.5hours with IF 3 compliant charger and cable to 6 hours with just one compliant.
See FP3 Battery Charging Basics - #2 by anon9989719
How old is the phone? If dirt gets in the USB port that can slow charging down. Unlike my 5 year old samsung the FP sends signals to the cable to see what it can handle, then depending upon response will communicate with the charger.
Some chargers have a fixed charger/cable and if IF3 compliant only the charger is tested.
I.e. to get the optimal charge rate, if the phone is OK then both the charger and cable have to be IF compliant.