Start with the moments that tell the story
Bring your original edit or source clips and the target aspect ratio. Pick the takes that make the subject clear, including a strong opening and a complete ending. These choices give Shorty a useful starting point for the edit.
Give Shorty the creative direction
Adapt the framing and text layout to the requested canvas without stretching the image.
Try a 20-second 9:16 edit as a starting point. Include the exact title or closing message you want on screen. Add a reference when you want to show the pace, captions or mood.
Try this editing prompt
Create a 20-second 9:16 video from my your original edit or source clips and the target aspect ratio. Adapt the framing and text layout to the requested canvas without stretching the image. Use my supplied wording for titles. Compare the final crop with the original and check that key details remain visible.
Make the next version more specific
Compare the final crop with the original and check that key details remain visible.
Play the first cut and pick the change that would help the story most. Name the moment, describe the result you want and tell Shorty what to keep. A note such as “hold the final product shot longer” gives the revision a clear direction.