Such a repetitive segment of playback can be useful for training video.
To enable the interface for creating looped segment, you need to enable the option
Please also create a separate custom button for enabling markers. You need to assign the api:cut command to this button.
You can view a template with such an interface.
You can also control the segment via the JS API with the cut command, if the player already knows the duration of the content.
player.api("cut",1); enables the segment from the current position + 30 seconds (this interval can be changed in the settings)
player.api("cut",0); disables the segment
player.api("cut"); enables / disables the segment
player.api("cut","10-20"); enables the segment from 10 to 20 seconds
player.api("cut?"); return an array with segment points