Update README.md

README.md

@@ -85,6 +85,24 @@ RoboInter-Data/
 
 The primary data format. Contains **actions + observations + annotations** in [LeRobot v2.1](https://github.com/huggingface/lerobot) format (parquet + MP4 videos), ready for policy training.
 
+### Download & Extract
+Dataset [link](https://huggingface.co/datasets/InternRobotics/RoboInter-Data/tree/main/Annotation_with_action_lerobotv21). Dataloader Code [link](https://github.com/InternRobotics/RoboInter/tree/main/RoboInterData).
+The `data/` and `videos/` directories are distributed as `.tar` archives (one per chunk) to reduce the number of files during transfer. After downloading, extract them in place:
+
+```bash
+cd Annotation_with_action_lerobotv21
+
+for dataset in lerobot_droid_anno lerobot_rh20t_anno; do
+  for subdir in data videos; do
+    cd ${dataset}/${subdir}
+    for f in *.tar; do tar xf "$f" && rm "$f"; done
+    cd ../..
+  done
+done
+```
+
+After extraction, each `data/` will contain `chunk-000/`, `chunk-001/`, ... with `.parquet` files, and each `videos/` will contain `chunk-000/`, `chunk-001/`, ... with `.mp4` files. The `meta/` directories are ready to use without extraction.
+
 ### Directory Layout
 
 ```