School bake sale poster to a 4-second clip: Seedance 2.0 Mini at 480p

For a PTA bake-sale poster, seedance-2-mini at 480p, 4 seconds and 9:16 costs $0.35 on Sume, the lowest Seedance price in the catalog: seedance-2-fast is $0.56, seedance-2 is $0.70 and seedance-2.5 is $1.07 for the same clip. Seedance is priced by video tokens (width x height x seconds x 24 / 1024) at a per-1,000-token rate times 1.25 (Video Router, read 2026-10-05). The shortest Seedance clip is 4 seconds.

What do I submit?

Use the poster image as the first frame and keep the motion simple. Seedance Mini and Fast stop at 720p, so ask for 480p or 720p only.

curl -X POST https://api.sume.com/v1/videos \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"seedance-2-mini","prompt":"The poster gently sways, sprinkles fall in front of it, warm light","duration":4,"resolution":"480p","aspect_ratio":"9:16","frame_images":[{"type":"image_url","image_url":{"url":"https://example.com/bake-sale-poster.png"},"frame_type":"first_frame"}]}'

How do the four Seedance ids compare at 4 seconds?

Resolutions and maximum lengths differ by id: seedance-2-mini and seedance-2-fast take 480p and 720p up to 15 seconds, seedance-2 takes 1080p as well up to 15 seconds, and seedance-2.5 takes up to 30 seconds.

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. If you want to compare the cheaper ids with Fast, see the existing comparison linked below.

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 480p enough for a school newsletter?

A 480p clip is fine for a class group chat or a newsletter embed, and the sale details should come from the poster text, which stays crisp in your original file. For a bigger screen re-run the keeper at 720p.