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schema/events.json

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+{
+  "schema_name": "sample_events_json",
+  "schema_version": 3,
+  "artifact_suffix": ".events.json",
+  "format": "json",
+  "row_grain": "one JSON object per WebDataset sample, containing a sparse event list",
+  "description": "Sparse anonymized gameplay event log for one POV sample window. Identity and tick-window metadata live in the paired sample metadata JSON and release indices; this sidecar intentionally contains only the approved event list.",
+  "privacy_boundary": {
+    "contains_steam_ids": false,
+    "contains_online_account_ids": false,
+    "contains_player_names": false,
+    "player_reference": "All participant references are pov_idx values or null."
+  },
+  "top_level_fields": [
+    {
+      "name": "events",
+      "type": "list<object>",
+      "required": true,
+      "description": "Events sorted by tick, then type. May be empty."
+    }
+  ],
+  "event_base_fields": [
+    {
+      "name": "tick",
+      "type": "int64",
+      "required": true,
+      "description": "Absolute demo tick for the event."
+    },
+    {
+      "name": "frame_idx",
+      "type": "int32",
+      "required": true,
+      "description": "Video frame index corresponding to the event tick, floor-aligned to the sample start."
+    },
+    {
+      "name": "type",
+      "type": "enum",
+      "required": true,
+      "valid_values": [
+        "round_freeze_end",
+        "buytime_ended",
+        "round_end",
+        "round_officially_ended",
+        "player_death",
+        "player_blind",
+        "bomb_beginplant",
+        "bomb_planted",
+        "bomb_begindefuse",
+        "bomb_defused",
+        "bomb_exploded",
+        "bomb_dropped",
+        "bomb_pickup",
+        "item_pickup",
+        "item_equip",
+        "weapon_zoom"
+      ],
+      "description": "Public event type."
+    }
+  ],
+  "event_types": {
+    "round_freeze_end": {
+      "description": "Round freezetime ended; player control becomes live.",
+      "additional_fields": []
+    },
+    "buytime_ended": {
+      "description": "Buy period ended.",
+      "additional_fields": []
+    },
+    "round_end": {
+      "description": "Round ended with winner/reason when available.",
+      "additional_fields": [
+        {
+          "name": "winner",
+          "type": "enum<T,CT>",
+          "required": false
+        },
+        {
+          "name": "reason",
+          "type": "string_or_int",
+          "required": false
+        }
+      ]
+    },
+    "round_officially_ended": {
+      "description": "Post-round period officially ended.",
+      "additional_fields": []
+    },
+    "player_death": {
+      "description": "Player death/kill event.",
+      "additional_fields": [
+        {
+          "name": "attacker_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "victim_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "assister_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "weapon",
+          "type": "string_or_null",
+          "required": false,
+          "description": "Sanitized weapon string; not a player identifier."
+        },
+        {
+          "name": "headshot",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false,
+          "description": "Whether this sample's POV was attacker, victim, or assister."
+        },
+        {
+          "name": "noscope",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "penetrated",
+          "type": "int32",
+          "required": false
+        }
+      ]
+    },
+    "player_blind": {
+      "description": "A player was blinded by a flashbang.",
+      "additional_fields": [
+        {
+          "name": "attacker_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "victim_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "blind_duration",
+          "type": "float32",
+          "required": false,
+          "unit": "seconds"
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_beginplant": {
+      "description": "A player began planting the C4.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "site",
+          "type": "string_or_int",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_planted": {
+      "description": "C4 planted.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "site",
+          "type": "string_or_int",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_begindefuse": {
+      "description": "A player began defusing the C4.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "haskit",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_defused": {
+      "description": "C4 defused.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "site",
+          "type": "string_or_int",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_exploded": {
+      "description": "C4 exploded.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "site",
+          "type": "string_or_int",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_dropped": {
+      "description": "C4 dropped.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "bomb_pickup": {
+      "description": "C4 picked up.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "item_pickup": {
+      "description": "Player picked up an item or weapon.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "item",
+          "type": "string",
+          "required": false
+        },
+        {
+          "name": "defindex",
+          "type": "int32",
+          "required": false
+        },
+        {
+          "name": "silent",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "item_equip": {
+      "description": "Player equipped an item or weapon.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "item",
+          "type": "string",
+          "required": false
+        },
+        {
+          "name": "defindex",
+          "type": "int32",
+          "required": false
+        },
+        {
+          "name": "weptype",
+          "type": "int32",
+          "required": false
+        },
+        {
+          "name": "canzoom",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "issilenced",
+          "type": "bool",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    },
+    "weapon_zoom": {
+      "description": "Player toggled weapon zoom/scope.",
+      "additional_fields": [
+        {
+          "name": "by_pov",
+          "type": "int32_or_null",
+          "required": false
+        },
+        {
+          "name": "pov_involved",
+          "type": "bool",
+          "required": false
+        }
+      ]
+    }
+  },
+  "excluded_v1_event_types": [
+    "player_hurt",
+    "weapon_fire",
+    "weapon_reload",
+    "grenade_thrown",
+    "flashbang_detonate",
+    "hegrenade_detonate",
+    "smokegrenade_detonate",
+    "smokegrenade_expired",
+    "inferno_startburn",
+    "inferno_expire",
+    "decoy_started",
+    "decoy_detonate",
+    "player_sound",
+    "player_footstep",
+    "fire_bullets",
+    "player_chat",
+    "chat_message",
+    "server_message"
+  ],
+  "validation": [
+    "top-level JSON object has exactly an events list",
+    "events are sorted by tick and type",
+    "each event has tick, frame_idx, and type",
+    "each event type is in event_base_fields.type.valid_values",
+    "frame_idx is nonnegative",
+    "no serialized field name or value contains steamid, xuid, accountid, profile URL, hltv_match_id, or player name"
+  ]
+}

schema/manifest.json

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+{
+  "schema_name": "manifest_parquet",
+  "schema_version": 5,
+  "artifact": "manifest.parquet",
+  "format": "parquet",
+  "row_grain": "one logical POV sample, deduplicated across physical resolutions",
+  "description": "Dataset sample inventory for split selection, filtering, and logical sample metadata. Physical shard byte lookup lives in sample_index.parquet.",
+  "primary_key": [
+    "sample_key"
+  ],
+  "privacy_boundary": {
+    "denied_columns": [
+      "clip_id",
+      "start_tick",
+      "end_tick",
+      "map",
+      "date",
+      "event",
+      "teams",
+      "player_id",
+      "player_name",
+      "resolution",
+      "video_width",
+      "video_height",
+      "shard_path",
+      "shard_id",
+      "member_offset",
+      "member_length",
+      "steamid",
+      "steam_id",
+      "xuid",
+      "accountid",
+      "profile_url",
+      "hltv_match_id",
+      "hltv_match_url",
+      "hltv_url",
+      "raw_demo_path",
+      "raw_demo_url",
+      "actions_bin",
+      "state_bin",
+      "events_json",
+      "run_id",
+      "error_msg"
+    ],
+    "contains_player_names": false,
+    "player_reference": "pov_idx is stable only within a match_id and is not stable across matches"
+  },
+  "columns": [
+    {"name": "postprocess_version", "arrow_type": "string", "nullable": false},
+    {"name": "metadata_schema_version", "arrow_type": "int32", "nullable": false},
+    {"name": "actions_schema_version", "arrow_type": "int32", "nullable": false},
+    {"name": "state_schema_version", "arrow_type": "int32", "nullable": false},
+    {"name": "events_schema_version", "arrow_type": "int32", "nullable": false},
+    {"name": "sample_key", "arrow_type": "string", "nullable": false},
+    {"name": "match_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "split", "arrow_type": "string", "nullable": false, "valid_values": ["train", "val", "test"]},
+    {"name": "map_slug", "arrow_type": "string", "nullable": false, "valid_values": ["anubis", "ancient", "dust2", "inferno", "mirage", "nuke", "overpass"]},
+    {"name": "team_side", "arrow_type": "string", "nullable": false, "valid_values": ["T", "CT"]},
+    {"name": "pov_round_result", "arrow_type": "string", "nullable": false, "valid_values": ["win", "loss", "unknown", ""]},
+    {"name": "round_winner", "arrow_type": "string", "nullable": false, "valid_values": ["T", "CT", ""]},
+    {"name": "round_end_reason", "arrow_type": "string", "nullable": false},
+    {"name": "clip_start_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "clip_end_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "round_start_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "round_decision_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "round_stop_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "frame0_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "frame_tick_stride", "arrow_type": "int32", "nullable": false},
+    {"name": "frames", "arrow_type": "int32", "nullable": false},
+    {"name": "fps", "arrow_type": "float32", "nullable": false},
+    {"name": "duration_s", "arrow_type": "float32", "nullable": false},
+    {"name": "tick_rate", "arrow_type": "int32", "nullable": false},
+    {"name": "alive_start_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "alive_end_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "alive_start_frame", "arrow_type": "int32", "nullable": false},
+    {"name": "alive_end_frame", "arrow_type": "int32", "nullable": false},
+    {"name": "alive_frames", "arrow_type": "int32", "nullable": false},
+    {"name": "alive_duration_s", "arrow_type": "float32", "nullable": false},
+    {"name": "survival_fraction", "arrow_type": "float32", "nullable": false},
+    {"name": "death_tick", "arrow_type": "int64", "nullable": true},
+    {"name": "death_frame", "arrow_type": "int32", "nullable": true},
+    {"name": "has_full_round", "arrow_type": "bool", "nullable": false},
+    {"name": "ended_by", "arrow_type": "string", "nullable": false, "valid_values": ["death", "round_stop", "clip_end", "unknown"]},
+    {"name": "media_truncated", "arrow_type": "bool", "nullable": true},
+    {"name": "intended_clip_end_tick", "arrow_type": "int64", "nullable": true},
+    {"name": "round_number_in_match", "arrow_type": "int32", "nullable": false},
+    {"name": "half_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "is_first_round", "arrow_type": "bool", "nullable": false},
+    {"name": "is_last_round", "arrow_type": "bool", "nullable": false},
+    {"name": "is_pistol_round", "arrow_type": "bool", "nullable": false},
+    {"name": "t_score_start", "arrow_type": "int32", "nullable": false},
+    {"name": "ct_score_start", "arrow_type": "int32", "nullable": false},
+    {"name": "score_diff_start", "arrow_type": "int32", "nullable": false},
+    {"name": "primary_weapon_id", "arrow_type": "int32", "nullable": false},
+    {"name": "primary_weapon_category", "arrow_type": "string", "nullable": false},
+    {"name": "weapon_ids_present", "arrow_type": "list<int32>", "nullable": false},
+    {"name": "weapon_categories_present", "arrow_type": "list<string>", "nullable": false},
+    {"name": "start_weapon_id", "arrow_type": "int32", "nullable": false},
+    {"name": "start_weapon_category", "arrow_type": "string", "nullable": false},
+    {"name": "start_health", "arrow_type": "int32", "nullable": false},
+    {"name": "start_armor", "arrow_type": "int32", "nullable": false},
+    {"name": "start_has_helmet", "arrow_type": "bool", "nullable": false},
+    {"name": "start_has_defuser", "arrow_type": "bool", "nullable": false},
+    {"name": "start_balance", "arrow_type": "int32", "nullable": false},
+    {"name": "start_has_bomb", "arrow_type": "bool", "nullable": false},
+    {"name": "has_awp", "arrow_type": "bool", "nullable": false},
+    {"name": "has_sniper", "arrow_type": "bool", "nullable": false},
+    {"name": "has_rifle", "arrow_type": "bool", "nullable": false},
+    {"name": "contains_bomb_plant", "arrow_type": "bool", "nullable": false},
+    {"name": "contains_bomb_defuse", "arrow_type": "bool", "nullable": false},
+    {"name": "contains_bomb_explosion", "arrow_type": "bool", "nullable": false},
+    {"name": "contains_player_death", "arrow_type": "bool", "nullable": false},
+    {"name": "sample_kills_total", "arrow_type": "int32", "nullable": false},
+    {"name": "sample_headshots_total", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_kills", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_deaths", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_assists", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_blinds_caused", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_blinded", "arrow_type": "int32", "nullable": false}
+  ],
+  "validation": [
+    "primary key is unique",
+    "split is match-map atomic",
+    "postprocess_version == v12",
+    "metadata_schema_version == 4",
+    "actions_schema_version == 9",
+    "state_schema_version == 1",
+    "events_schema_version == 3",
+    "sample_key matches match_{match_id}__r{round_idx:03d}__p{pov_idx:02d}",
+    "round_id matches match_{match_id}__r{round_idx:03d}",
+    "clip_start_tick < clip_end_tick",
+    "round_start_tick <= round_decision_tick <= round_stop_tick",
+    "frame_tick_stride == 2 for final release rows",
+    "0 <= alive_start_frame <= alive_end_frame <= frames",
+    "alive_frames == alive_end_frame - alive_start_frame",
+    "clip_start_tick <= alive_start_tick <= alive_end_tick <= clip_end_tick",
+    "media_truncated == true implies clip_end_tick < intended_clip_end_tick",
+    "survival_fraction == alive_frames / frames within float tolerance",
+    "no resolution, shard path, offset, member length, Steam ID, account ID, HLTV URL, raw demo path, player name, or error columns are present"
+  ]
+}

schema/maps.json

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+{
+  "schema_version": 1,
+  "description": "Public map enum for CounterStrike-1K v1. world_bounds is optional visualizer calibration; null means visualizers should auto-fit from match_states positions until calibration is verified.",
+  "coordinate_system": "CS2 world coordinates from pos_x and pos_y. Visualizers treat pos_x as horizontal and pos_y as vertical, with vertical screen coordinates inverted.",
+  "maps": {
+    "ancient": {
+      "display_name": "Ancient",
+      "engine_name": "de_ancient",
+      "world_bounds": null
+    },
+    "anubis": {
+      "display_name": "Anubis",
+      "engine_name": "de_anubis",
+      "world_bounds": null
+    },
+    "dust2": {
+      "display_name": "Dust2",
+      "engine_name": "de_dust2",
+      "world_bounds": null
+    },
+    "inferno": {
+      "display_name": "Inferno",
+      "engine_name": "de_inferno",
+      "world_bounds": null
+    },
+    "mirage": {
+      "display_name": "Mirage",
+      "engine_name": "de_mirage",
+      "world_bounds": null
+    },
+    "nuke": {
+      "display_name": "Nuke",
+      "engine_name": "de_nuke",
+      "world_bounds": null
+    },
+    "overpass": {
+      "display_name": "Overpass",
+      "engine_name": "de_overpass",
+      "world_bounds": null
+    }
+  }
+}
+

schema/match_events.json

@@ -0,0 +1,80 @@
+{
+  "schema_name": "match_events_parquet",
+  "schema_version": 2,
+  "artifact_pattern": "match_events/match_{match_id}.parquet",
+  "format": "parquet",
+  "row_grain": "one row per sanitized parsed game event",
+  "description": "Anonymized full-match event stream derived from approved non-text parser game events. The match_id is encoded in the artifact path. This is broader than per-sample events.json and keeps payloads sanitized. Raw chat/text events are excluded.",
+  "sort_order": [
+    "tick",
+    "event_type"
+  ],
+  "privacy_boundary": {
+    "contains_steam_ids": false,
+    "contains_online_account_ids": false,
+    "contains_player_names": false,
+    "contains_raw_chat_text": false,
+    "excluded_event_types": [
+      "player_chat",
+      "chat_message",
+      "server_message"
+    ],
+    "payload_policy": "SteamID, XUID, accountid, name-like fields, and raw chat/text events are dropped or mapped to pov_idx references before serialization."
+  },
+  "columns": [
+    {
+      "name": "tick",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Absolute demo tick. Tick -1 is allowed for parser/global events that are not associated with a gameplay tick."
+    },
+    {
+      "name": "round_idx",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Zero-indexed round number. -1 means the event is outside a release round window."
+    },
+    {
+      "name": "event_type",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Parser event name."
+    },
+    {
+      "name": "user_pov",
+      "arrow_type": "int16",
+      "nullable": true,
+      "description": "Primary user POV reference if present."
+    },
+    {
+      "name": "attacker_pov",
+      "arrow_type": "int16",
+      "nullable": true,
+      "description": "Attacker POV reference if present."
+    },
+    {
+      "name": "victim_pov",
+      "arrow_type": "int16",
+      "nullable": true,
+      "description": "Victim POV reference if present."
+    },
+    {
+      "name": "assister_pov",
+      "arrow_type": "int16",
+      "nullable": true,
+      "description": "Assister POV reference if present."
+    },
+    {
+      "name": "payload_json",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Canonical JSON object with sanitized event payload fields."
+    }
+  ],
+  "validation": [
+    "no denied identity columns are present",
+    "payload_json parses as JSON object",
+    "payload_json does not contain steamid, xuid, accountid, profile URL, hltv_match_id, or player-name fields",
+    "pov reference columns are null or in [0, 9] for complete 10-POV matches"
+  ]
+}

schema/match_index.json

@@ -0,0 +1,95 @@
+{
+  "schema_name": "match_index_parquet",
+  "schema_version": 3,
+  "artifact": "match_index.parquet",
+  "format": "parquet",
+  "row_grain": "one row per match-map demo",
+  "description": "Semantic match-map-level grouping and aggregate counts. Physical shard paths and byte offsets live only in sample_index.parquet.",
+  "primary_key": [
+    "match_id"
+  ],
+  "columns": [
+    {
+      "name": "match_id",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "split",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "map_slug",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "round_count",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "complete_10_rounds",
+      "arrow_type": "int32",
+      "nullable": false,
+      "description": "Number of rounds with all 10 POV samples present."
+    },
+    {
+      "name": "sample_count",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "pov_count",
+      "arrow_type": "int32",
+      "nullable": false,
+      "description": "Distinct anonymized POV ids observed for this match."
+    },
+    {
+      "name": "total_frames",
+      "arrow_type": "int64",
+      "nullable": false
+    },
+    {
+      "name": "total_duration_s",
+      "arrow_type": "float64",
+      "nullable": false
+    },
+    {
+      "name": "first_tick",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Earliest released round/sample tick for this match."
+    },
+    {
+      "name": "last_tick",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Latest released round/sample tick for this match."
+    },
+    {
+      "name": "t_rounds_won",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "ct_rounds_won",
+      "arrow_type": "int32",
+      "nullable": false
+    }
+  ],
+  "validation": [
+    "primary key is unique",
+    "round_count > 0",
+    "complete_10_rounds == round_count",
+    "sample_count > 0",
+    "pov_count == 10",
+    "total_frames > 0",
+    "total_duration_s > 0",
+    "first_tick <= last_tick",
+    "t_rounds_won + ct_rounds_won <= round_count",
+    "no resolution, shard_path, or byte-offset columns are present",
+    "no column is named map"
+  ]
+}

schema/match_states.json

@@ -0,0 +1,215 @@
+{
+  "schema_name": "match_states_parquet",
+  "schema_version": 2,
+  "artifact_pattern": "match_states/match_{match_id}.parquet",
+  "format": "parquet",
+  "row_grain": "one row per POV per parsed demo tick",
+  "description": "Anonymized tick-level POV and game-state traces derived from the source demo. The match_id is encoded in the artifact path. This is the redistributable substitute for raw demo state access.",
+  "sort_order": [
+    "tick",
+    "pov_idx"
+  ],
+  "privacy_boundary": {
+    "contains_steam_ids": false,
+    "contains_online_account_ids": false,
+    "contains_player_names": false,
+    "player_reference": "pov_idx is stable within one match-map demo"
+  },
+  "columns": [
+    {
+      "name": "tick",
+      "arrow_type": "int32",
+      "nullable": false,
+      "description": "Absolute demo tick."
+    },
+    {
+      "name": "pov_idx",
+      "arrow_type": "int16",
+      "nullable": false,
+      "description": "Anonymized player POV id."
+    },
+    {
+      "name": "team_side",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "T",
+        "CT",
+        ""
+      ]
+    },
+    {
+      "name": "FORWARD",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "BACK",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "LEFT",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "RIGHT",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "JUMP",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "DUCK",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "WALK",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "FIRE",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "RIGHTCLICK",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "RELOAD",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "INSPECT",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "USE",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "pitch",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "degrees"
+    },
+    {
+      "name": "yaw",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "degrees"
+    },
+    {
+      "name": "delta_pitch",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "degrees"
+    },
+    {
+      "name": "delta_yaw",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "degrees"
+    },
+    {
+      "name": "pos_x",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "CS2 world units"
+    },
+    {
+      "name": "pos_y",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "CS2 world units"
+    },
+    {
+      "name": "pos_z",
+      "arrow_type": "float32",
+      "nullable": false,
+      "unit": "CS2 world units"
+    },
+    {
+      "name": "active_weapon",
+      "arrow_type": "int16",
+      "nullable": false,
+      "description": "Coarse weapon category id; indexes weapons.json."
+    },
+    {
+      "name": "active_weapon_id",
+      "arrow_type": "int16",
+      "nullable": false,
+      "description": "Exact weapon id; indexes weapons.json."
+    },
+    {
+      "name": "health",
+      "arrow_type": "int16",
+      "nullable": false
+    },
+    {
+      "name": "ammo_clip",
+      "arrow_type": "int16",
+      "nullable": false
+    },
+    {
+      "name": "ammo_reserve",
+      "arrow_type": "int16",
+      "nullable": false,
+      "description": "255 means unknown or not applicable."
+    },
+    {
+      "name": "armor_value",
+      "arrow_type": "int16",
+      "nullable": false
+    },
+    {
+      "name": "has_helmet",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "has_defuser",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "has_bomb",
+      "arrow_type": "bool",
+      "nullable": false
+    },
+    {
+      "name": "balance",
+      "arrow_type": "int32",
+      "nullable": false,
+      "description": "Player money balance when available from parser state."
+    },
+    {
+      "name": "t_score",
+      "arrow_type": "uint8",
+      "nullable": false
+    },
+    {
+      "name": "ct_score",
+      "arrow_type": "uint8",
+      "nullable": false
+    }
+  ],
+  "validation": [
+    "no denied identity columns are present",
+    "rows are sorted by tick and pov_idx",
+    "pov_idx values are within [0, 9] for complete 10-POV matches",
+    "button columns are boolean",
+    "health and armor_value are in [0, 100]"
+  ]
+}

schema/media.json

@@ -0,0 +1,88 @@
+{
+  "schema_name": "media",
+  "schema_version": 1,
+  "artifact_suffix": ".mp4",
+  "format": "mp4",
+  "description": "Public video/audio encoding contract for WebDataset MP4 members.",
+  "encoder_policy": {
+    "compatibility_contract": "The public loader contract is the MP4/H.264/AAC bitstream, not a specific encoder implementation.",
+    "render_stage_default_video_encoder": "h264_nvenc",
+    "wds_reencode_video_encoder": "libx264 when WebDataset packing is run with reencode_mode=optimized",
+    "release_environment_source": "stats/release_environment.json records the exact final encoder, FFmpeg version, and packing mode used for the published release."
+  },
+  "profiles": {
+    "720p": {
+      "container": "mp4",
+      "video_codec": "h264",
+      "width": 1280,
+      "height": 720,
+      "fps": 32,
+      "gop_size": 32,
+      "closed_gop": true,
+      "b_frames": 0,
+      "video_quality": {
+        "mode": "crf",
+        "value": 20,
+        "applies_to": "libx264 WebDataset re-encode path"
+      },
+      "pixel_format": "yuv420p",
+      "faststart": true,
+      "audio_codec": "aac",
+      "audio_profile": "LC",
+      "audio_channels": 2,
+      "audio_channel_layout": "stereo",
+      "audio_sample_rate_hz": 44100,
+      "audio_bitrate_policy": "CSDM render sets audioBitrate=128 kbps; WebDataset packing copies source AAC audio unless audio is explicitly stripped.",
+      "audio_nominal_bitrate_bps": 128000,
+      "audio_validation_bitrate_bps": {
+        "min": 96000,
+        "max": 192000
+      }
+    },
+    "360p": {
+      "container": "mp4",
+      "video_codec": "h264",
+      "width": 640,
+      "height": 360,
+      "fps": 32,
+      "gop_size": 32,
+      "closed_gop": true,
+      "b_frames": 0,
+      "video_quality": {
+        "mode": "crf",
+        "value": 20,
+        "applies_to": "libx264 WebDataset re-encode path"
+      },
+      "pixel_format": "yuv420p",
+      "faststart": true,
+      "audio_codec": "aac",
+      "audio_profile": "LC",
+      "audio_channels": 2,
+      "audio_channel_layout": "stereo",
+      "audio_sample_rate_hz": 44100,
+      "audio_bitrate_policy": "CSDM render sets audioBitrate=128 kbps; WebDataset packing copies source AAC audio unless audio is explicitly stripped.",
+      "audio_nominal_bitrate_bps": 128000,
+      "audio_validation_bitrate_bps": {
+        "min": 96000,
+        "max": 192000
+      }
+    }
+  },
+  "notes": [
+    "yuv420p is used for broad decoder, browser, OpenCV, PyAV, FFmpeg, torchcodec, and hardware-decoder compatibility.",
+    "faststart places MP4 metadata at the front of the file for browser playback and HTTP range-read friendliness.",
+    "The release stores a stereo game-audio mix. It does not expose multichannel audio or positional audio metadata."
+  ],
+  "validation": [
+    "video stream is decodable",
+    "video codec is H.264",
+    "video resolution matches the release profile",
+    "video frame rate is 32 FPS",
+    "video pixel format is yuv420p",
+    "audio stream exists",
+    "audio codec is AAC-LC",
+    "audio channel count is 2",
+    "audio sample rate is 44100 Hz",
+    "audio bit rate is within the profile validation range when ffprobe reports bit_rate"
+  ]
+}

schema/round_index.json

@@ -0,0 +1,69 @@
+{
+  "schema_name": "round_index_parquet",
+  "schema_version": 6,
+  "artifact": "round_index.parquet",
+  "format": "parquet",
+  "row_grain": "one released 10-POV round",
+  "description": "Round-level grouping for synchronized multi-POV selection and round-shuffled training. Physical sample lookup lives in sample_index.parquet.",
+  "window_definitions": {
+    "alive_intersection": "Time interval where every released POV player in the round is alive simultaneously. Researchers can use this for all-players-alive synchronized windows.",
+    "clip_intersection": "Time interval where every released POV clip in the round has video frames available.",
+    "clip_union": "Time interval where at least one released POV clip in the round has video frames available.",
+    "round_lifecycle": "Canonical game round window from round_start_tick to round_stop_tick."
+  },
+  "primary_key": [
+    "round_id"
+  ],
+  "columns": [
+    {"name": "match_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "split", "arrow_type": "string", "nullable": false, "valid_values": ["train", "val", "test"]},
+    {"name": "map_slug", "arrow_type": "string", "nullable": false, "valid_values": ["anubis", "ancient", "dust2", "inferno", "mirage", "nuke", "overpass"]},
+    {"name": "round_start_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "round_decision_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "round_stop_tick", "arrow_type": "int64", "nullable": false},
+    {"name": "t_score_start", "arrow_type": "int32", "nullable": false, "description": "T-side score before this round's outcome is applied."},
+    {"name": "ct_score_start", "arrow_type": "int32", "nullable": false, "description": "CT-side score before this round's outcome is applied."},
+    {"name": "round_winner", "arrow_type": "string", "nullable": false, "valid_values": ["T", "CT", ""], "description": "Team side that won the round, from round_end.winner."},
+    {"name": "round_end_reason", "arrow_type": "string", "nullable": false, "description": "Sanitized round_end.reason value when available."},
+    {"name": "round_duration_s", "arrow_type": "float32", "nullable": false},
+    {"name": "half_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "is_pistol_round", "arrow_type": "bool", "nullable": false},
+    {"name": "score_diff_start", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_count", "arrow_type": "int32", "nullable": false},
+    {"name": "complete_10_pov", "arrow_type": "bool", "nullable": false},
+    {"name": "alive_intersection_start_tick", "arrow_type": "int64", "nullable": false, "description": "Maximum alive_start_tick across POVs in the round."},
+    {"name": "alive_intersection_end_tick", "arrow_type": "int64", "nullable": false, "description": "Minimum alive_end_tick across POVs in the round."},
+    {"name": "alive_intersection_frames", "arrow_type": "int32", "nullable": false, "description": "Frame count for the interval where all released POV players are alive simultaneously."},
+    {"name": "clip_intersection_start_tick", "arrow_type": "int64", "nullable": false, "description": "Maximum clip_start_tick across POVs in the round."},
+    {"name": "clip_intersection_end_tick", "arrow_type": "int64", "nullable": false, "description": "Minimum clip_end_tick across POVs in the round."},
+    {"name": "clip_intersection_frames", "arrow_type": "int32", "nullable": false, "description": "Frame count for the interval common to all released POV clips."},
+    {"name": "clip_union_start_tick", "arrow_type": "int64", "nullable": false, "description": "Minimum clip_start_tick across POVs in the round."},
+    {"name": "clip_union_end_tick", "arrow_type": "int64", "nullable": false, "description": "Maximum clip_end_tick across POVs in the round."},
+    {"name": "media_truncated_any_pov", "arrow_type": "bool", "nullable": true, "description": "True when at least one POV sidecar was clipped to shorter rendered media than the corrected round/death-tail window."},
+    {"name": "media_truncated_pov_count", "arrow_type": "int32", "nullable": true, "description": "Number of POVs in the round with media_truncated=true."},
+    {"name": "bomb_planted", "arrow_type": "bool", "nullable": false},
+    {"name": "bomb_defused", "arrow_type": "bool", "nullable": false},
+    {"name": "bomb_exploded", "arrow_type": "bool", "nullable": false},
+    {"name": "round_kills_total", "arrow_type": "int32", "nullable": false},
+    {"name": "round_headshots_total", "arrow_type": "int32", "nullable": false},
+    {"name": "has_awp_any_pov", "arrow_type": "bool", "nullable": false}
+  ],
+  "validation": [
+    "primary key is unique",
+    "pov_count == 10",
+    "complete_10_pov is true",
+    "round_start_tick <= round_decision_tick <= round_stop_tick",
+    "alive_intersection_start_tick <= alive_intersection_end_tick",
+    "clip_intersection_start_tick <= clip_intersection_end_tick",
+    "clip_union_start_tick <= clip_intersection_start_tick",
+    "clip_intersection_start_tick <= alive_intersection_start_tick",
+    "alive_intersection_end_tick <= clip_intersection_end_tick",
+    "clip_intersection_end_tick <= clip_union_end_tick",
+    "t_score_start and ct_score_start are cumulative side scores before the current round",
+    "round_winner is T, CT, or empty",
+    "round event booleans and kill/headshot counts are aggregated from the ten POV sample event summaries",
+    "no resolution, shard path, offset, or per-member columns are present"
+  ]
+}

schema/row_index.json

@@ -0,0 +1,56 @@
+{
+  "schema_name": "row_index_parquet",
+  "schema_version": 1,
+  "artifact": "row_index.parquet",
+  "format": "parquet",
+  "row_grain": "one row per sample_key per resolution",
+  "description": "Sample-level physical lookup table for WebDataset tar shards. Each row carries all five member byte ranges for one sample and resolution. Use sample_index.parquet when member-level rows are more convenient.",
+  "primary_key": [
+    "sample_key",
+    "resolution"
+  ],
+  "columns": [
+    {"name": "sample_key", "arrow_type": "string", "nullable": false},
+    {"name": "match_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_id", "arrow_type": "string", "nullable": false},
+    {"name": "round_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "pov_idx", "arrow_type": "int32", "nullable": false},
+    {"name": "resolution", "arrow_type": "string", "nullable": false, "valid_values": ["720p", "360p"]},
+    {"name": "video_width", "arrow_type": "int32", "nullable": false},
+    {"name": "video_height", "arrow_type": "int32", "nullable": false},
+    {"name": "shard_path", "arrow_type": "string", "nullable": false},
+    {"name": "shard_id", "arrow_type": "int32", "nullable": false},
+    {"name": "shard_size_bytes", "arrow_type": "int64", "nullable": false},
+    {"name": "shard_sha256", "arrow_type": "string", "nullable": false},
+    {"name": "tar_format", "arrow_type": "string", "nullable": false, "valid_values": ["ustar"]},
+    {"name": "compression", "arrow_type": "string", "nullable": false, "valid_values": ["none"]},
+    {"name": "json_member_name", "arrow_type": "string", "nullable": false},
+    {"name": "json_offset", "arrow_type": "int64", "nullable": false},
+    {"name": "json_length", "arrow_type": "int64", "nullable": false},
+    {"name": "json_sha256", "arrow_type": "string", "nullable": false},
+    {"name": "actions_member_name", "arrow_type": "string", "nullable": false},
+    {"name": "actions_offset", "arrow_type": "int64", "nullable": false},
+    {"name": "actions_length", "arrow_type": "int64", "nullable": false},
+    {"name": "actions_sha256", "arrow_type": "string", "nullable": false},
+    {"name": "state_member_name", "arrow_type": "string", "nullable": false},
+    {"name": "state_offset", "arrow_type": "int64", "nullable": false},
+    {"name": "state_length", "arrow_type": "int64", "nullable": false},
+    {"name": "state_sha256", "arrow_type": "string", "nullable": false},
+    {"name": "events_member_name", "arrow_type": "string", "nullable": false},
+    {"name": "events_offset", "arrow_type": "int64", "nullable": false},
+    {"name": "events_length", "arrow_type": "int64", "nullable": false},
+    {"name": "events_sha256", "arrow_type": "string", "nullable": false},
+    {"name": "mp4_member_name", "arrow_type": "string", "nullable": false},
+    {"name": "mp4_offset", "arrow_type": "int64", "nullable": false},
+    {"name": "mp4_length", "arrow_type": "int64", "nullable": false},
+    {"name": "mp4_sha256", "arrow_type": "string", "nullable": false}
+  ],
+  "validation": [
+    "primary key is unique",
+    "all offsets are >= 0",
+    "all lengths are > 0",
+    "all SHA-256 fields are 64-character lowercase hex strings",
+    "each member byte range resolves inside shard_path",
+    "no column contains private player identifiers"
+  ]
+}

schema/sample_index.json

@@ -0,0 +1,172 @@
+{
+  "schema_name": "sample_index_parquet",
+  "schema_version": 3,
+  "artifact": "sample_index.parquet",
+  "format": "parquet",
+  "row_grain": "one row per WebDataset tar member",
+  "description": "Physical lookup table for random access into uncompressed WebDataset tar shards. Semantic filtering lives in manifest.parquet.",
+  "primary_key": [
+    "sample_key",
+    "resolution",
+    "member_suffix"
+  ],
+  "columns": [
+    {
+      "name": "sample_key",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "match_id",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "round_id",
+      "arrow_type": "string",
+      "nullable": false
+    },
+    {
+      "name": "round_idx",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "pov_idx",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "resolution",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "720p",
+        "360p"
+      ]
+    },
+    {
+      "name": "video_width",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "video_height",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "member_name",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Full tar member name, for example {sample_key}.mp4."
+    },
+    {
+      "name": "member_suffix",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "mp4",
+        "actions.bin",
+        "state.bin",
+        "events.json",
+        "json"
+      ]
+    },
+    {
+      "name": "modality",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "video",
+        "actions",
+        "state",
+        "events",
+        "metadata"
+      ]
+    },
+    {
+      "name": "content_type",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "video/mp4",
+        "application/octet-stream",
+        "application/json"
+      ]
+    },
+    {
+      "name": "shard_path",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Relative path to the public shard inside the release repo."
+    },
+    {
+      "name": "shard_id",
+      "arrow_type": "int32",
+      "nullable": false
+    },
+    {
+      "name": "member_index",
+      "arrow_type": "int32",
+      "nullable": false,
+      "description": "Zero-indexed member order within the tar shard."
+    },
+    {
+      "name": "member_offset",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Byte offset of the member payload inside the uncompressed tar."
+    },
+    {
+      "name": "member_length",
+      "arrow_type": "int64",
+      "nullable": false,
+      "description": "Payload length in bytes."
+    },
+    {
+      "name": "member_sha256",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Hex SHA-256 of the member payload."
+    },
+    {
+      "name": "shard_size_bytes",
+      "arrow_type": "int64",
+      "nullable": false
+    },
+    {
+      "name": "shard_sha256",
+      "arrow_type": "string",
+      "nullable": false,
+      "description": "Hex SHA-256 of the full tar shard."
+    },
+    {
+      "name": "tar_format",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "ustar"
+      ]
+    },
+    {
+      "name": "compression",
+      "arrow_type": "string",
+      "nullable": false,
+      "valid_values": [
+        "none"
+      ],
+      "description": "Shard tar compression. Current release shards are uncompressed."
+    }
+  ],
+  "validation": [
+    "primary key is unique",
+    "member_offset >= 0",
+    "member_length > 0",
+    "member_sha256 is a 64-character lowercase hex SHA-256",
+    "shard_sha256 is a 64-character lowercase hex SHA-256",
+    "HTTP range bytes=member_offset-(member_offset+member_length-1) returns exactly the member payload",
+    "each sample_key has exactly five member_suffix values per resolution",
+    "no column is named clip_id"
+  ]
+}