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best practice

Convert Video Context into High-Quality Visual Graphics

Turn video content into professional posters and infographics instantly.

Leverage the `gemini-3.1-flash-image` model to convert video files or YouTube URLs into static visual assets like movie posters and thumbnails.

Google Gemini

The Scenario

You have a long video presentation or a YouTube video and need to quickly create a professional-looking promotional poster or a summary infographic for social media.

Before & after

The old way

Manually taking screenshots, importing them into a design tool, and adding graphics or layout elements would take 30–60 minutes per poster.

With AI

Provide a YouTube URL or upload a video to `gemini-3.1-flash-image` to generate a high-quality visual in 1–2 minutes. This ensures the output is contextually accurate to the video content.

The Prompt

Generate a [OUTPUT_TYPE: cinematic movie poster/summary infographic/thumbnail] based on the key themes and visual style of this video: [INSERT_YOUTUBE_URL_OR_VIDEO_FILE]. Focus on a [THEME: e.g., futuristic/minimalist] aesthetic.

The gemini-3.1-flash-image model supports passing a video file or YouTube URL as context to generate summaries, infographics, or posters.

Source

Release notes  |  Gemini API  |  Google AI for Developers
"You can now pass a video file... to generate high-quality thumbnails, cinematic movie posters, or summary infographics. This feature is supported... on gemini-3.1-flash-image."