Swap the gift in a Christmas clip with Gemini Omni Flash edit

Gemini Omni Flash 1.1 on Sume accepts a video_url and a prompt and rewrites the clip, for example replacing the bottle with an apple. That lets one approved Christmas ad become three gift variants. The input is 3 to 10 seconds, so trim a longer clip first.

What the edit mode does

You send an existing clip and describe the change. The model keeps the framing and motion and swaps the object. It does not take reference photos in edit mode, so describe the new gift in words.

Three variants, one source

Write three prompts that change only the object: candle, mug, scarf. Run each as a separate job and review the three clips side by side before captions.

• Keep the prompt short and literal
• One change per prompt
• Check hands and edges frame by frame

When to trim first

If your source clip runs over 10 seconds, cut the best 8 with Sume's video trim at $0.02 per job, then edit the trimmed copy.

Limits worth knowing

A product with a legible logo or label may not survive an edit cleanly. For hero shots with exact packaging, generate from a first frame instead, and keep edit mode for non-label objects.