如何为 LTX Video 写提示词

最重要的规则

1. 1

   至少写 120 个词

   较短的提示词会被自动改写,你的细节会丢失。请用外观、场景和光线来凑够 120 个词,而不是重复堆砌形容词。

2. 2

   以动作开头

   第一句就是主要动作本身:“A small penguin takes a red book from the shelf…”。不要先写场景,也不要先写风格。

3. 3

   直白描述

   把颜色、质感、材质和光线说清楚(“dark, jagged rocks covered in patches of green moss”),不要用氛围词和电影行话。

4. 4

   一个动作,一次运镜

   一个片段只有几秒:不要剪辑切换,不要第二个场景,也不要分段讲故事。

5. 5

   用 Distilled 打草稿,用 Dev 出成品

   LTX Video Distilled 是默认的快速模型。提示词调好后,用同样的文字在 LTX Video Dev 上生成最终成品。

可参考的提示词

• 文字生成的瀑布

  White water pours over the edge of a mossy cliff and plunges into a deep green pool below, throwing up a fine mist. The falling water splits into three ribbons halfway down, then rejoins in a churning cloud of foam that spreads in rings across the pool. The cliff is dark gray basalt, wet and glistening, with thick cushions of bright green moss and small ferns growing from every crack. Smooth round boulders line the edge of the pool, and tall tree ferns lean in from both banks. The scene is dominated by the contrast between the bright white water and the dark, wet rock. The camera stays still at the water's edge, looking up at the falls. Soft overcast light, deep greens and grays, with a faint rainbow in the mist near the base.

  为什么有效: 它以动作开头,直白地描述每个表面,镜头保持不动,并且超过 120 个词,因此你的原话会原样传给模型。

• 让起始帧动起来

  A gray tabby cat on a sunny windowsill stretches its front legs, yawns widely, then curls back into a ball and closes its eyes. Its tail flicks once and settles over its nose as its sides rise and fall slowly. The cat has striped silver-gray fur, white paws, a pink nose and pale green eyes. The windowsill is painted white wood, with a small terracotta pot of basil at one end and a folded blue blanket under the cat. Through the window behind it, rooftops and a strip of blue sky are softly out of focus. The camera stays still at the height of the windowsill in a medium close-up. Warm afternoon sunlight falls across the cat from the right, with soft shadows and a gentle gold and gray palette.

  为什么有效: 把照片作为 First Frame 上传。提示词仍然以动作开头,然后用同样直白的语言描述照片中的内容,让画面和提示词保持一致。

• 文字生成的热气球

  A red and yellow striped hot-air balloon rises slowly from a misty valley at sunrise, its burner flaring orange as it lifts. The basket sways gently as the balloon climbs past the treetops, and two passengers in dark jackets lean over the edge and point toward the hills. The balloon is huge and round, with bold vertical stripes and a wicker basket hung on thick ropes. Below it, a patchwork of green fields and hedgerows stretches away, and a narrow river glints between rows of poplar trees. The camera follows from a distance at the same height, drifting slowly to the left as the balloon rises. The light is low and golden, with long shadows across the fields, pale blue mist in the hollows and a peach-colored sky.

  为什么有效: 一个连续动作,一次缓慢运镜,并对热气球、大地和光线做了直白的细节描述。先用 LTX Video Distilled 打草稿,再用同样的文字在 LTX Video Dev 上生成。