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YouTube Subtitle Base Generation Prompt

A comprehensive prompt designed for Nano Banana Pro to generate YouTube subtitle bases (lower thirds) for various content genres like business, gaming, entertainment, and vlogs. It specifies technical requirements like 16:9 aspect ratio, 2K resolution, and a green background for easy transparency, outputting three different design patterns simultaneously.

February 23, 2026 • Source: YouMind

Generated result using this prompt

The Prompt

【Create Subtitle Bases for YouTube】 ●Basic Information ・Do not input text; only create the subtitle base (lower third) ・Opaque ・Horizontal ・Solid green background for easy transparency ・Create three different design patterns stacked vertically ・Aspect ratio is "16:9" ・Resolution is "2K"
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●Design Information ({argument name="genre" default="Business"}) ・Clean and simple design ・Design easy to use for {argument name="genre" default="Business"} videos ・{argument name="genre" default="Design that conveys reliability"}
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●Design Information (Game Commentary) ・Clean and simple design ・Design easy to use for game commentary
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●Design Information (Entertainment) ・Clean and simple design ・Design similar to those used by Japanese entertainment YouTubers
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●Design Information (Vlog/Daily Life) ・Clean and simple design ・Calm design easy to use for stylish Vlog videos

Parameters

aspect_ratio

16:9

quality

high

About This Prompt

Prompt Content

【Create Subtitle Bases for YouTube】
●Basic Information
・Do not input text; only create the subtitle base (lower third)
・Opaque
・Horizontal
・Solid green background for easy transparency
・Create three different design patterns stacked vertically
・Aspect ratio is "16:9"
・Resolution is "2K"

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●Design Information ({argument name="genre" default="Business"})
・Clean and simple design
・Design easy to use for {argument name="genre" default="Business"} videos
・{argument name="genre" default="Design that conveys reliability"}

----------------

●Design Information (Game Commentary)
・Clean and simple design
・Design easy to use for game commentary

----------------

●Design Information (Entertainment)
・Clean and simple design
・Design similar to those used by Japanese entertainment YouTubers

----------------

●Design Information (Vlog/Daily Life)
・Clean and simple design
・Calm design easy to use for stylish Vlog videos