Use per-episode TsFile layout matching source data_path

README.md

@@ -56,12 +56,16 @@ Source metadata:
 
 ## Converted Structure
 
-```text
-data/reachy_wave.tsfile
-meta/episodes.jsonl
-meta/info.json
-meta/stats.json
-meta/tasks.jsonl
+```text
+data/chunk-000/episode_000000.tsfile
+data/chunk-000/episode_000001.tsfile
+data/chunk-000/episode_000002.tsfile
+data/chunk-000/episode_000003.tsfile
+data/chunk-000/episode_000004.tsfile
+meta/episodes.jsonl
+meta/info.json
+meta/stats.json
+meta/tasks.jsonl
 videos/chunk-000/observation.images.head_left/episode_000000.mp4
 ...
 videos/chunk-000/observation.images.head_left/episode_000004.mp4
@@ -86,12 +90,12 @@ The source Parquet rows contain:
 
 TsFile details:
 
-- Output file: `data/reachy_wave.tsfile`
+- Output files: `data/chunk-000/episode_000000.tsfile` through `data/chunk-000/episode_000004.tsfile`
 - Table name: `reachy_wave`
 - TAG columns: `episode_id`, `task_id`
 - Time precision: milliseconds
 - `Time`: `round(timestamp * 1000)`
-- Row count preserved: 1,380 source rows -> 1,380 TsFile rows
+- Row count preserved: 1,380 source rows -> 1,380 TsFile rows across 5 per-episode files
 
 ## Feature Names
 
@@ -125,9 +129,10 @@ metadata:
 
 ## Viewer Note
 
-Hugging Face Dataset Viewer may not preview `.tsfile` files because the hosted
-viewer environment must have TsFile support installed. Download `data/reachy_wave.tsfile`
-and read it with a TsFile-compatible reader.
+Hugging Face Dataset Viewer may not preview `.tsfile` files because the hosted
+viewer environment must have TsFile support installed. Download the per-episode
+TsFile files under `data/chunk-000/` and read them with a TsFile-compatible
+reader.
 
 ## Citation
 

meta/info.json

@@ -11,7 +11,7 @@
     "splits": {
         "train": "0:5"
     },
-    "data_path": "data/reachy_wave.tsfile",
+    "data_path": "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.tsfile",
     "video_path": "videos/chunk-{episode_chunk:03d}/{video_key}/episode_{episode_index:06d}.mp4",
     "features": {
         "action": {
@@ -137,7 +137,7 @@
     "tsfile_conversion": {
         "source_dataset": "aliberts/reachy_wave",
         "source_data_path": "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.parquet",
-        "converted_data_path": "data/reachy_wave.tsfile",
+        "converted_data_path": "data/chunk-{episode_chunk:03d}/episode_{episode_index:06d}.tsfile",
         "table_name": "reachy_wave",
         "time_precision": "ms",
         "time_column": "Time = round(timestamp * 1000)",
@@ -146,10 +146,12 @@
             "task_id"
         ],
         "row_count": 1380,
+        "episode_files": 5,
         "vector_columns_flattened": {
             "observation.state": "state_0..state_21",
             "action": "action_0..action_21"
         },
+        "frame_alignment": "episode_index selects the TsFile/video file; frame_index aligns with the video frame index; episode_timestamp_s aligns with video time in seconds.",
         "notes": "meta/ and videos/ are mirrored from the source repository; only Parquet data is converted to TsFile."
     }
 }