Initial upload: lerobot-lancedb format pusht conversion

.gitattributes

@@ -58,3 +58,5 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+pusht-lerobot-lancedb-video.lance/data/010000111111111000101100dd50564608b068c06f445c804f.lance filter=lfs diff=lfs merge=lfs -text
+pusht-lerobot-lancedb-video_videos.lance/data/1001110111111101011010100be2394edf86440990f5a1dbc9.lance filter=lfs diff=lfs merge=lfs -text

README.md

@@ -0,0 +1,67 @@
+---
+license: apache-2.0
+task_categories:
+- robotics
+language:
+- en
+tags:
+- lerobot
+- pusht
+- diffusion-policy
+- robotics
+- lance
+- lerobot-lancedb
+pretty_name: pusht-lerobot-lancedb-video (video blobs)
+size_categories:
+- 10K<n<100K
+---
+
+# pusht-lerobot-lancedb-video (video blobs)
+
+A [`lerobot-lancedb`](https://github.com/lancedb/lerobot-lancedb)-format Lance copy of
+[`lerobot/pusht`](https://huggingface.co/datasets/lerobot/pusht), using the **video-blob layout**:
+one row per frame in `…video.lance` (tabular only), plus one row per source mp4 in
+`…video_videos.lance` (raw mp4 bytes as Lance blob v2). Pixels are bit-exact with upstream.
+
+> **Not to be confused with** [`lance-format/lerobot-pusht-lance`](https://huggingface.co/datasets/lance-format/lerobot-pusht-lance),
+> which uses a different three-table schema and is **not loadable** with `lerobot-lancedb`. This
+> repo is specifically the layout produced by `lerobot-convert-to-lance-video`.
+
+## Load
+
+```python
+from lerobot_lancedb import LeRobotLanceVideoDataset
+
+ds = LeRobotLanceVideoDataset(repo_id="lance-format/pusht-lerobot-lancedb-video")
+print(len(ds))                                # 25_650 frames
+print(ds[0]["observation.image"].shape)       # torch.Size([3, 96, 96])
+```
+
+Decode is on-the-fly via `torchcodec` against the inline mp4 bytes (no separate `videos/`
+directory). Lance streams the segment bytes lazily through byte-range fetches from the Hub.
+
+## Repro
+
+```bash
+pip install git+https://github.com/lancedb/lerobot-lancedb.git
+lerobot-convert-to-lance-video \
+    --repo-id=lerobot/pusht \
+    --output=./pusht-lerobot-lancedb-video \
+    --table-name=pusht-lerobot-lancedb-video
+```
+
+## Layout
+
+```
+pusht-lerobot-lancedb-video/
+├── meta/                                   # standard LeRobotDataset metadata sidecar
+├── pusht-lerobot-lancedb-video.lance/        # one row per frame, tabular only
+└── pusht-lerobot-lancedb-video_videos.lance/ # one row per source mp4, raw bytes as blob v2
+```
+
+Frames table columns: `episode_index`, `frame_index`, `index`, `timestamp`, `task_index`,
+`observation.state`, `action`. Pixels live in the `_videos.lance` blob column and are decoded
+per-(`episode`, `video_key`) segment at sample time.
+
+Size: ~8 MB. Companion JPEG-frame layout (~60 MB, faster single-frame decode) at
+[`lance-format/pusht-lerobot-lancedb`](https://huggingface.co/datasets/lance-format/pusht-lerobot-lancedb).

meta/episodes/chunk-000/file-000.parquet

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meta/info.json

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+{
+  "codebase_version": "v3.0",
+  "robot_type": "unknown",
+  "total_episodes": 206,
+  "total_frames": 25650,
+  "total_tasks": 1,
+  "chunks_size": 1000,
+  "fps": 10,
+  "splits": {
+    "train": "0:206"
+  },
+  "data_path": "data/chunk-{chunk_index:03d}/file-{file_index:03d}.parquet",
+  "video_path": "videos/{video_key}/chunk-{chunk_index:03d}/file-{file_index:03d}.mp4",
+  "features": {
+    "observation.image": {
+      "dtype": "video",
+      "shape": [
+        96,
+        96,
+        3
+      ],
+      "names": [
+        "height",
+        "width",
+        "channel"
+      ],
+      "video_info": {
+        "video.fps": 10.0,
+        "video.codec": "av1",
+        "video.pix_fmt": "yuv420p",
+        "video.is_depth_map": false,
+        "has_audio": false
+      }
+    },
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+      "dtype": "float32",
+      "shape": [
+        2
+      ],
+      "names": {
+        "motors": [
+          "motor_0",
+          "motor_1"
+        ]
+      },
+      "fps": 10.0
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+  "data_files_size_in_mb": 100,
+  "video_files_size_in_mb": 500
+}

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