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+        "formula": "source present and finite; for ego, official truncation_ratio >= 0.2",
+        "semantics": "usable_annotation"
+      },
+      "valid_ref": "annotation/mano/motion_valid.pt"
+    },
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+      "available": true,
+      "axes": [
+        "T",
+        "height",
+        "width",
+        "channel"
+      ],
+      "data_ref": "observation/rgb.mkv",
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+        "method": "Source PNG decoded to RGB and losslessly stored as FFV1"
+      },
+      "schema_id": "rgb/uint8/v1",
+      "source_locator": {
+        "archive_prefix": "raw/data/m--20221007--1215--HIR112--pilot--ProjectGoliathScript--Hands--two-hands/Mugsy_cameras/envmap_per_segment.tar.gz",
+        "member_template": "envmap_per_segment/images/400273/{source_frame_id:06d}.png"
+      },
+      "storage": {
+        "codec": "ffv1",
+        "pixel_format": "rgb24",
+        "profile": "mkv/ffv1_rgb24/v1",
+        "source_lossy": false
+      },
+      "storage_fps": 1,
+      "timebase_role": "index_only",
+      "valid_axes": [
+        "T"
+      ],
+      "valid_ref": "observation/rgb_valid.pt"
+    },
+    "segment": {
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+      "axes": [
+        "T",
+        "height",
+        "width"
+      ],
+      "data_ref": "annotation/segment/mask.mkv",
+      "foreground_category": "hand",
+      "identity_semantics": "left and right union; no per-hand identity",
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+      "provenance": {
+        "kind": "format_conversion",
+        "method": "Native uint8 non-binary foreground intensity retained losslessly"
+      },
+      "schema_id": "segment/foreground_intensity/v1",
+      "source_locator": {
+        "archive_prefix": "raw/data/m--20221007--1215--HIR112--pilot--ProjectGoliathScript--Hands--two-hands/Mugsy_cameras/envmap_per_segment.tar.gz",
+        "member_template": "envmap_per_segment/masks/400273/{source_frame_id:06d}.png"
+      },
+      "valid_axes": [
+        "T"
+      ],
+      "valid_ref": "annotation/segment/mask_valid.pt",
+      "value_range": [
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+        255
+      ]
+    }
+  },
+  "conversion_scope": "full",
+  "dataset_id": "ReInterHand",
+  "full_conversion_complete": true,
+  "full_output_human_review": "pending",
+  "hand_slots": [
+    "left",
+    "right"
+  ],
+  "num_frames": 626,
+  "omitted_components": {
+    "contact": "not present",
+    "depth": "not present",
+    "keypoints_xyz": "orig_fits keypoints are an auxiliary fitting source; MANO and source meshes are retained as the selected geometric supervision"
+  },
+  "release_id": "shared-v1.0",
+  "sample_type": "video",
+  "sampling": {
+    "frames_ref": "camera/frames.jsonl",
+    "selection": "All available frames for this official action/render setting",
+    "source_fps": 30,
+    "temporal_relationship": true,
+    "time_semantics": "official video frame order and documented source FPS; timestamps not inferred",
+    "type": "dense"
+  },
+  "schema_version": "hand-warehouse/1.0",
+  "sequence_id": "m--20221007--1215--HIR112--pilot--ProjectGoliathScript--Hands--two-hands__envmap_per_segment__122392__124914",
+  "sequence_id_role": "temporal_sequence",
+  "source_capture_id": "m--20221007--1215--HIR112--pilot--ProjectGoliathScript--Hands--two-hands",
+  "source_frame_span": [
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+    124914
+  ],
+  "source_rendering": {
+    "background_policy": "envmap_per_segment",
+    "camera_family": "Mugsy_cameras",
+    "camera_randomized_per_image": false,
+    "official_render_rate_fps": 30,
+    "official_split_kind": "video_based",
+    "synthetic_background_variant": true
+  },
+  "source_segment_id": "DOU_hyperextension",
+  "split": "train",
+  "split_scheme": "InterWild_official_capture_split",
+  "split_source_locator": {
+    "capture_id": "m--20221007--1215--HIR112--pilot--ProjectGoliathScript--Hands--two-hands",
+    "url": "https://github.com/facebookresearch/InterWild/blob/7c01e4ad4909652056a68af93b4c16ceabbce8fe/data/ReInterHand/ReInterHand.py"
+  },
+  "storage_revision": "lossless-video-2026-09-25",
+  "upload_authorized": false,
+  "view_type": "exo"
+}