This public, ungated transport repository contains one normalized A-09 first frame and 40 formal terminal-frame controls: 20 falls_left and 20 falls_right, arranged as 20 matched endpoint pairs. They are production controls for constructing the fixed 200-row Seedance 2.0 first/last-frame candidate-video bank in PhysEdit issue #297.

What this is—and is not

The endpoint bank is owner-accepted only for candidate-video generation. It is not a PAWBench benchmark-input release, an accepted training-video bank, an evaluated world-model output set, a checkpoint result, or claim-ready evidence. No paid video generation, training, evaluation, or paper-claim work was run by issue #297.

The 200 planned videos still require a reusable eight-row canary, complete request/response accounting, and owner-reviewed minimal-usability decisions. Every usable unique video then enters one common bank. Training and evaluation have separate handback contracts and a later Claim Gate.

Construction

The canonical A-09 image was resized once from 2752x1536 to 1376x768 using Lanczos filtering, preserving aspect ratio with no crop. The terminal frames were generated with gpt-image-2 at medium quality from mirrored left/right image-edit prompts. Pair 01 was downscaled from the two accepted 2752x1536 pilots; pairs 02–20 were generated directly at 1376x768. Every formal PNG is hash-bound in manifests/endpoint_bank.json. The two archived pilot images are intentionally absent.

Formal owner acceptance is recorded separately from contact-sheet review in owner_acceptance_receipt.json and preserves known limitations: the image editor re-rendered the scene, so small background and hand-position drift remain possible.

Frozen video request

Provider surface: fal.ai standard bytedance/seedance-2.0/image-to-video (not Fast)
Resolution: 720p
Duration: 5 seconds
Aspect ratio: auto
Audio: disabled (generate_audio=false)
Shared seeds: 17001, 17002, 17003, 17004, 17005
Fixed direction-neutral prompt: prompts/seedance_neutral_motion.txt

The Generation Plan contains exactly 40 endpoints x 5 shared seeds = 200 stable sample identities (100 per controlled direction). The eight reusable canary rows are both directions of endpoint pairs 01 and 20 under seeds 17001 and 17002, covering both endpoint-image construction modes.

How to consume

Use the normalized first-frame URL as the request start image and the row-specific endpoint URL as end_image_url. Do not put the outcome label, endpoint ID, or left/right wording into the motion prompt. Verify downloaded inputs against checksums.sha256 before paid submission. Preserve every planned row in the candidate ledger even when submission, generation, download, decode, or review fails.

Authority hashes

Portable endpoint manifest: ada9003591b629b3d6c48712991118f55abd7d4bf2c3fc6e45d7c9f89d93c3db
Generation Plan: 2e8dbbeacf4c53deecce1c143b40604c7e56cc983dd07a7ed7a9a26f6ab0923d
Frozen request profile: 8014d4e02cd13af1a1bbf94aef59fa1f01d3cbdbffd8ff4cac464e0a45e70b94

Schemas in schemas/ define the candidate ledger, accepted common bank, deterministic exposure manifests, complete logical checkpoint handback, and evaluation handback. UPLOAD_SEQUENCE.md defines when each downstream package may be uploaded. Proposed collaborator staging repositories are named in staging_locations.json; their write strategy remains pending explicit collaborator confirmation and no write access is assumed.

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