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# 4.Choose the Format Before You Generate

From [5 Practical Ways to Turn a Still Photo Into a Short AI Video](https://listium.com/@cand/148202/5-practical-ways-to-turn-a-still-photo-into-a-short-ai-video)  
By [can ding (@cand)](https://listium.com/@cand)

List stats: 3 views · 0 likes · 0 followers  
Published 17 August 2026 · Updated 17 August 2026

Category: hobbies & interests / video production

- Notes:
  > The final destination should shape the video from the beginning. Vertical 9:16 works well for TikTok, Instagram Reels, and YouTube Shorts. Square 1:1 is useful for feed posts, while landscape 16:9 fits YouTube, websites, presentations, and many advertisements. Cropping after generation can cut off faces, products, or important movement.
  > 
  > Check the source photo before selecting a format. A vertical portrait may not adapt well to a wide landscape frame without empty space or an awkward crop. A product photo designed for a website banner may need a different composition before it becomes a vertical social clip. Plan the framing so the main subject remains visible from the first frame to the last.
  > 
  > Short test generations are especially useful when trying a new aspect ratio. They reveal whether the background stays stable, whether the subject remains centered, and whether the requested camera movement still makes sense in the chosen format.