Add TsFile (converted from ethanCSL/Ting_grip_box)

README.md

@@ -111,8 +111,10 @@ Numeric frame rows retain `frame_index`, `episode_index`, `task_index`, and
 The source `meta/` files are mirrored in this repository. `meta/info.json` is
 updated so `data_path` points to `data/ting_grip_box_train.tsfile`; its
 `tsfile_conversion` object records the actual table name, Time mapping, TAG
-columns, flattened features, renamed and dropped fields, row count, and video
-policy.
+columns, source episode-file count, converted TsFile count, flattened features,
+renamed and dropped fields, row count, and frame/video alignment. The converted
+`total_videos` value is `0`; the original count of `540` is preserved as
+`tsfile_conversion.source_video_count`.
 
 ## Validation
 

meta/info.json

@@ -4,7 +4,7 @@
   "total_episodes": 270,
   "total_frames": 114441,
   "total_tasks": 4,
-  "total_videos": 540,
+  "total_videos": 0,
   "total_chunks": 1,
   "chunks_size": 1000,
   "fps": 30,
@@ -138,15 +138,34 @@
   "tsfile_conversion": {
     "source_dataset": "ethanCSL/Ting_grip_box",
     "source_data_path": "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet",
+    "source_video_count": 540,
+    "source_episode_file_count": 270,
     "converted_data_path": "data/ting_grip_box_train.tsfile",
+    "converted_tsfile_count": 1,
     "table_name": "ting_grip_box_train",
     "granularity": "per_split",
     "time_precision": "ms",
     "time_mapping": {
       "source": "timestamp",
+      "formula": "Time = round(timestamp * 1000)",
+      "source_unit": "seconds",
       "fps": 30,
       "unit": "milliseconds"
     },
+    "frame_video_alignment": {
+      "relationship": "one converted row per source frame",
+      "preserved_columns": [
+        "episode_index",
+        "task_index",
+        "frame_index",
+        "sample_index"
+      ],
+      "sample_index_mapping": {
+        "source": "index",
+        "converted": "sample_index"
+      },
+      "video_location": "original_dataset_only"
+    },
     "tag_columns": [
       "episode_index",
       "task_index"