The video is nice but nothing. Crimping pliers without conversion are useless, the only problem - bought inappropriate pliers.
Crimping pliers only with gear - great attention has to be paid to marking the jaws - crimping pliers on video are for non-insulated car connectors - FAST-ON. It is easy to see the gap at wire = wide jaw = deformation = can not be used for displayed connectors 
The SN-28B is the most common crimper sold in China expressly labeled for “DuPont” terminals. So he bought exactly what the vendors say to buy for the application in question!
I have a few Chinese crimpers, and none are very good. Regardless of what type of terminal they’re for, the precision of the jaws is too poor, and produces unpredictable results (or predictably bad ones).
The text I marked in red are the parts where I have no idea what you are trying to say.
Crimping pliers with a gear have a bigger push - thus a stronger wire capture.
I have several interchangeable jaws, they look the same - each crimp differently - depends on the initial shape of the connector - core clamping ratio and wire sheath (varies with the length of the facets / for one wire, for multiple wires, wire size) - standard - AWG / SWG / mm2 - there is much variation.
Chinese crimping pliers stand in CZ 300,- _ 700,- CZK, High quality pliers (Knipex, Wiha .....) 1500, - _ 18000, - CZK by type and design.
I use Chinese pliers but good jaws - after a small adjustment it works. Pliers for data cables can not be edited - I have the original 3800, - CZK