How to write:
• Reference the video: @Video1
• Reference images: @Image1, @Image2
• Example: Use @Video1. Make it winter style like @Image1.

Constraints:
• Duration: 3-12 seconds
• Format: MP4
• Aspect: 16:9 or 9:16 preferred

Upload images to guide the style, texture, or lighting of the output video.

This sets the cost bracket. The actual output length depends on your input video.