Edit YouTube thumbnails with Gemini

Gemini Try it →Watch full video →AI Samson · Aug 2025

Demo summary

The creator walks through upgrading a low-quality video screenshot into a thumbnail by prompting Gemini to change his expression, add studio lighting, and insert a phone into his hand.

Step-by-step

Upload a screenshot from a video to the Gemini interface
Prompt the AI to add studio lighting to the image
Request a specific change to facial expressions, such as 'smug and confident'
Prompt the AI to insert an object, like a phone, into the subject's hand
Instruct the AI to adjust the depth of field by bringing the object forward and blurring the background

Options

Change specific facial expressions
Add or remove objects from the scene
Adjust lighting styles
Modify focus and background blur

Tips

Use Gemini to upgrade low-quality video screenshots into high-quality thumbnail assets
Iterate on the image by asking for specific scene setups or setups that were not in the original shot

Highlights

“this is incredibly powerful for generating your own thumbnails”

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AI Inpainting

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