Agency approval loop for AI video: 480p proof, then the final on Sume

For client work, send a 480p proof, get approval, then render the final at 720p or 1080p. On Sume a 30-second Seedance 2.5 proof is about $8.06, the 720p final about $17.33 and the 1080p final about $42.65. The catch is that there is no seed, so the final is a new take, not an upscale of the proof. Tell the client that before they sign off.

What the proof is, and is not

A proof shows the idea, the camera path, the casting of the references and the pacing. It does not show final detail. Because seedance-2.5 does not accept a seed on Sume, rendering the same prompt at a higher resolution produces a different clip. The approved proof is a direction, not a frame-accurate preview. The draft-then-final workflow post covers this in detail.

BytePlus lists 480p, 720p and 1080p as the available resolutions for Seedance 2.5 (BytePlus: Dreamina Seedance 2.5), so all three exist on both sides.

Quote the rounds

Price the engagement in rounds. Each round is a new proof; the final is paid once after approval, and you should include a second final take in the quote because a good proof does not guarantee a good final.

Operate it on Sume

Submit every proof and final with its own Idempotency-Key and keep the job id with the client ticket. The Jobs and results docs say to store the job id so work can be recovered after a restart. If your plan limits concurrency, extra proofs wait as queued, which is normal per Generation admission.

curl -X POST https://api.sume.com/v1/video-router/generate \
  -H "Authorization: Bearer $SUME_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: client42-proof-1" \
  -d '{
    "model": "seedance-2.5",
    "prompt": "A runner laces up at dawn, city waking up, slow push-in, warm light.",
    "resolution": "480p",
    "duration": 30,
    "aspect_ratio": "16:9",
    "mode": "async"
  }'