{
"version": "1.0",
"subject": {
"reference_image": "user_product",
"preserve_product": true,
"preserve_label": true,
"note": "a generic fictional creator holds the exact uploaded product toward the phone camera while talking"
},
"task": "authentic UGC testimonial video still (talking head)",
"creator": {
"generic_fictional_person": true,
"expression": "friendly, mid-sentence, engaged",
"pose": "holding product near face, showing label to camera"
},
"scene": {
"aspect_ratio": "3:4",
"setting": "cozy home (living room / bedroom, soft daylight from window)",
"framing": "selfie arm's-length, chest-up"
},
"camera": {
"style": "front camera selfie",
"depth_of_field": "phone-like shallow",
"angle": "slightly high"
},
"lighting": {
"style": "soft natural window light",
"imperfect": true
},
"quality": {
"style": [
"authentic UGC style",
"shot on smartphone front/rear camera",
"natural imperfect lighting",
"candid and relatable",
"realistic skin texture",
"slight sensor grain",
"true-to-life colors",
"believable everyday scene"
]
},
"negative_prompt": [
"AI artifacts",
"low quality",
"blurry",
"oversaturated colors",
"plastic skin",
"warped text",
"gibberish text",
"distorted product label",
"extra fingers",
"deformed hands",
"watermark",
"stock photo look",
"overly polished studio retouching",
"fake glossy advertising look",
"cgi render",
"incorrect anatomy"
]
}
How to use
This prompt creates a video testimonial frame in the UGC style, with a creator holding your product and talking to the phone camera in a homely setting, ideal for a review thumbnail or an ad that converts, and it works in NanoBanana, in Gemini and in ChatGPT.
1) Send the photo of your product along with the JSON prompt in the same message.
2) The AI generates a generic fictional creator, with a friendly expression, showing the label near the face.
3) Adjust the setting in "setting" to a living room or bedroom with window light.
4) Change the expression in "creator.expression" and the framing in "framing" to suit the tone you want.
5) Keep "preserve_product" and "preserve_label" so your product shows up faithfully.
6) Generate variations and pick the most natural frame to become the ad cover.
Tip: by sending only the product photo, the AI creates the creator from scratch, useful when you would rather not appear.
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