Steps:

1. To create the background image template for all the pictures (1920x1080 & RGB)
(gimp-image-new width height type)
(gimp-image-new 1920 1080 RGB)

2. To use the bucket fill tool to color the Background layer black (HTML - 000000)
(gimp-context-set-background background)
(gimp-context-set-background (0 0 0))

3. To input the given text at the specified location
(gimp-text-fontname image drawable x y text border antialias size size-type fontname)
(gimp-text-fontname Untitled Background 100 100 "Hello" 0 TRUE 90 PIXELS "Times New Roman")

4. To save the photo in the requested area
(gimp-file-save run-mode image drawable filename raw-filename)
(gimp-file-save NONINTERACTIVE Untitled Background "c:\Users\Name\Desktop\RequiredFolder\SectionA" "")

Raw Code:

(gimp-image-new 1920 1080 RGB)
(gimp-context-set-background (0 0 0))
(gimp-text-fontname Untitled Background 100 100 "Hello" 0 TRUE 90 PIXELS "Times New Roman")
(gimp-file-save NONINTERACTIVE Untitled Background "c:\Users\Name\Desktop\RequiredFolder\SectionA" "")