二十四格24frames中文
Image · AI WorkflowNO.149 / 166
Watch: The same person as the frame changes from 1:1 to 4:5, 9:16, 16:9 and 2.39:1: vertical suits short video and phones, horizontal suits a cinematic feel. Decide the ratio first, then the composition can follow.A line-art demo that only illustrates the technique, not finished footage.

Image · AI Workflow

Aspect Ratio画幅比例

The width-to-height ratio of the frame. It decides the composition and where it goes: 9:16 for vertical short video, 16:9 for landscape, 1:1 and 4:5 for social images.

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This is a step in making a film, not a visual technique. For the whole process, see Make an AI short from scratch.

Prompt templates are written from how generation models usually behave and have not yet been verified one by one with real generations. “Common pitfalls” are judgment from experience, not official limits.

01

When to use it

Set it before every generation; a video's first-frame image and the video must share the same ratio.

02

Prompt template

vertical 9:16, full-body subject in the lower two thirds of the frame, sky left open above for title text.
03

Sample prompt · generate an image directly

The technique comes first, followed by the subject, scene, details and aspect ratio. Paste it straight into an image model and swap in your own subject.

Vertical 9:16 short-drama cover: the front door of a family home on a snowy night, a young man with a backpack stands in the lower two thirds of the frame looking up at a lit window, a large area of deep blue night sky and falling snow above for the title text. Cinematic, warm window against a cold night. (Also select 9:16 in the tool's ratio option.)
04

Common pitfalls

  • Generating horizontal and cropping to vertical cuts half the person off.
  • The first frame and the video have different ratios, so the image gets stretched or letterboxed.
05

Parameter tips

9:16 for short drama and TikTok; 16:9 or 2.39:1 for cinematic landscape; set it in the tool's ratio option, not just in the prompt.

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