如何为 Grok Video 写提示词

最重要的规则

1. 1

   按顺序描述一个镜头

   先写镜头类型和角度,再写动作(用“然后”连接),接着是地点、光线、一句风格描述,最后是声音。短片段只容得下一两个节拍,讲不了一个完整的故事。

2. 2

   最后写声音

   每个片段都会自带配乐。把它写在最后:柏油路上的雨声、人群的低语、缓慢的钢琴单音。

3. 3

   不要写对白

   Mage 上的 Grok Video 不支持语音口型同步。如果角色需要说话,请使用 Cherry 2 Pro 或 Lemon。

4. 4

   每个参考只负责一件事

   “@image1 里的女人穿着 @image2 里的外套，走过整条码头。”两三个分工明确的参考，胜过五个互相重叠的参考。

5. 5

   一次只改一处

   上传视频片段，说明要改的那一处，再列出保持不变的内容：“其余一切与原片完全一致，包括她的脸、双手、姿势和背景。”

可参考的提示词

• 一个定场镜头

  Aerial wide shot of a small fishing harbor at dawn. A single red ferry pulls away from the pier, then turns slowly toward the open sea, leaving a long white wake across the still water. Stacked lobster traps, a row of pastel houses on the hill, gulls circling the masts. Soft pink light low on the horizon, mist over the water. Calm documentary feel. The ferry's diesel hum, gull cries, water lapping at the pilings.

  为什么有效: 按角度、依次发生的动作、场地、光线、氛围和声音的顺序来写：一个清晰的镜头，没有需要猜的地方。

• 产品的慢动作瞬间

  Extreme slow-motion macro shot: the cap flips off a cold green glass bottle of lemon soda, then a fine spray of droplets bursts into the air and a thin mist curls out of the neck. Condensation runs down the glass; ice glitters in a metal bucket behind it. Bright summer backlight, sharp highlights on every droplet. Fresh commercial look. A crisp pop, the fizz of bubbles, a short splash.

  为什么有效: 慢动作加微距镜头，让短片有足够的内容可看，声音那一行则点明了每个动作。

• 一个纹丝不动的微缩场景

  Stop-motion claymation, visible fingerprints in the clay, slightly choppy frame rate, a small tabletop set. A round clay hedgehog in a blue apron waters three potted sunflowers on a windowsill, then sets down the watering can and watches as the flowers slowly lift their heads toward the sun. A checkered curtain, a cracked teapot and a sleeping clay cat sit beside the pots. Continuity: every object stays exactly where it is for the whole clip; nothing appears, disappears, duplicates, or changes shape. Warm morning window light, cozy handmade look, a gentle ukulele melody and the trickle of water.

  为什么有效: 连贯性的那句话能避免道具增多或乱跑，这是复杂场景中最常见的问题。

• 穿着已保存服装的你的 Character

  Slow push-in on a rooftop garden at golden hour. Then @mara walks in from the left between the planters, wearing @linen-shirt with wide white trousers, stops at the railing and looks out over the city, then turns her head toward the camera with a small smile. Warm low sun behind her, the skyline soft and hazy. High-quality slow motion, highly detailed face. Wind in the leaves, distant traffic, a soft acoustic guitar.

  为什么有效: 先写镜头运动，每个句柄只负责一个角色，提示词描述的是它们做什么，而不是图片里有什么。把句柄换成你自己的 Character 和 Reference。

• 对你自己的视频片段做编辑

  Make the woman's raincoat bright yellow. Keep everything else exactly as in the original, including her face, hands, pose, the umbrella, and the background.

  为什么有效: 把片段作为视频上传：一处修改加一份保持不变的清单，编辑就够了。