Landscaping yard transformation clip: Seedance 2.5 first+last frame

For a yard transformation, give seedance-2.5 the before photo as first_frame and the finished photo as last_frame. An 8-second 16:9 clip costs $2.15 at 480p, $4.62 at 720p and $11.37 at 1080p on Sume. Seedance 2.5 takes both frame types and 4 to 30 seconds (Video generation, read 2026-10-05).

What does the request look like?

Use two photos taken from the same spot and height. The model fills in the work between them, so a fixed camera position gives the bridge the least to invent.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"seedance-2.5","prompt":"Time-lapse of a backyard being cleared and landscaped, fixed camera, daylight","duration":8,"resolution":"720p","aspect_ratio":"16:9","frame_images":[{"type":"image_url","image_url":{"url":"https://example.com/yard-before.jpg"},"frame_type":"first_frame"},{"type":"image_url","image_url":{"url":"https://example.com/yard-after.jpg"},"frame_type":"last_frame"}]}'

What is the price by resolution?

The video-token count scales with pixels and seconds; 1080p also uses a higher token rate on Seedance 2.5, so the step from 720p to 1080p is larger than the step from 480p to 720p.

How do I poll and download the result?

A submit returns 202 with id, polling_url, status and model. Poll GET /v1/videos/{id} until status is completed (the other terminal values are failed and cancelled), then download from GET /v1/videos/{id}/content?index=0 with the same bearer key. A 480p pass is a cheap way to check that the bridge between your two photos looks believable.

curl https://api.sume.com/v1/videos/JOB_ID -H "Authorization: Bearer $SUME_API_KEY"
curl -L "https://api.sume.com/v1/videos/JOB_ID/content?index=0" \
  -H "Authorization: Bearer $SUME_API_KEY" --output clip.mp4

Is it honest to show an AI transformation?

Label it as an illustration of the plan if the in-between frames are generated, and show the real finished photo next to it. The clip shows motion between your two photos; it is not footage of the work.