Video Contract

• Container: MP4
• Pixel format: RGB-compatible 8-bit video
• Orientation: upright, with no vertical flip
• Timeline: full requested horizon
• Ordering: chronological
• Frame rate: 10 FPS by default, controlled by the evaluator-owned worldsimprobe.configs/video.yaml
• Resolution: model-native output is accepted and resized only where the metric requires alignment
• Overlays: no labels, borders, contact sheets, or debug UI

Models may generate native chunks internally, but the submitted candidate must cover the complete timeline assigned to the sample. Early termination, repeated short chunks, or a single frame held for the missing horizon fail validation on the official evaluator.

Submission manifests cannot override frame rate or timestamps. Validation decodes the media and compares its frame rate with the evaluator configuration.