Update video specs for 1080p sample pack

README.md

@@ -42,6 +42,8 @@ Key characteristics:
 - Intel RealSense D435I RGB-D capture for overhead view
 - Chinese cooking tasks involving tool use, bimanual coordination, and fine-grained food manipulation
 
+> **Note:** Large egocentric videos in this sample pack are provided as **1080p preview encodings** for easier download. Full **4K** source recordings are available upon request.
+
 ---
 
 ## Sample Pack Contents
@@ -50,8 +52,8 @@ Key characteristics:
 
 | File | Description |
 |------|-------------|
-| `egocentric.mp4` | Head-mounted action camera, first-person view (3840×2160, 29.97fps) |
-| `side_view.mp4` | Fixed side-view phone camera (1920×1080, 60fps) |
+| `egocentric_1080p.mp4` | Head-mounted action camera, first-person view (1920×1080, 30fps preview) |
+| `side_view.mp4` | Fixed side-view phone camera (1920×1080, 60fps, original capture) |
 | `overhead/overhead.mp4` | Fixed overhead RealSense RGB (1280×720, 15fps) |
 | `depth/depth.hdf5` | Aligned depth frames, float32 in meters (480×848, 2379 frames) |
 
@@ -59,8 +61,8 @@ Key characteristics:
 
 | File | Description |
 |------|-------------|
-| `egocentric.mp4` | Head-mounted action camera, first-person view (3840×2160, 29.97fps) |
-| `side_view.mp4` | Fixed side-view phone camera (1920×1080, ~60fps) |
+| `egocentric_1080p.mp4` | Head-mounted action camera, first-person view (1920×1080, 30fps preview) |
+| `side_view.mp4` | Fixed side-view phone camera (1920×1080, 30fps preview) |
 
 > Depth sample is included for Task 1. Additional depth recordings may be available depending on the task and capture setup.
 
@@ -73,29 +75,28 @@ Key characteristics:
 ## File Structure
 
 ```
-samplepack_video/
-├── task_01_cutting/
-│   ├── egocentric.mp4
-│   ├── side_view.mp4
-│   ├── overhead/
-│   │   ├── overhead.mp4
-│   │   └── overhead_*.PNG
-│   ├── depth/
-│   │   ├── depth.hdf5
-│   │   └── check_*.jpg
-│   ├── egocentric_screenshot_*.PNG
-│   └── side_view_*.PNG
-└── task_02_stir_fry/
-    ├── egocentric.mp4
-    ├── side_view.mp4
-    ├── egocentric_screenshot_*.PNG
-    └── side_view_*.PNG
+task_01_cutting/
+├── egocentric_1080p.mp4
+├── side_view.mp4
+├── overhead/
+│   ├── overhead.mp4
+│   └── overhead_*.PNG
+├── depth/
+│   ├── depth.hdf5
+│   └── check_*.jpg
+├── egocentric_screenshot_*.PNG
+└── side_view_*.PNG
+task_02_stir_fry/
+├── egocentric_1080p.mp4
+├── side_view.mp4
+├── egocentric_screenshot_*.PNG
+└── side_view_*.PNG
 ```
 
 **Read depth data (Python):**
 ```python
 import h5py
-with h5py.File("samplepack_video/task_01_cutting/depth/depth.hdf5", "r") as f:
+with h5py.File("task_01_cutting/depth/depth.hdf5", "r") as f:
     depth = f["depth_meters"][:]   # (2379, 480, 848) float32, meters
     ts    = f["timestamps"][:]
 ```
@@ -104,10 +105,21 @@ with h5py.File("samplepack_video/task_01_cutting/depth/depth.hdf5", "r") as f:
 
 ## Camera Setup
 
+### Sample pack (this repository)
+
+| View | Task 1 | Task 2 |
+|------|--------|--------|
+| Egocentric | 1920×1080, 30fps (`egocentric_1080p.mp4`) | 1920×1080, 30fps (`egocentric_1080p.mp4`) |
+| Side | 1920×1080, 60fps (`side_view.mp4`) | 1920×1080, 30fps (`side_view.mp4`) |
+| Overhead RGB | 1280×720, 15fps | — |
+| Overhead depth | 848×480 (HDF5) | — |
+
+### Original capture specs (full dataset on request)
+
 | View | Device | Resolution | Frame Rate |
 |------|--------|------------|------------|
-| Egocentric | Head-mounted action camera | 3840×2160 (4K) | 29.97 fps |
-| Side | Fixed smartphone | 1920×1080 | 60 fps |
+| Egocentric | Head-mounted action camera (DJI Osmo Action 3) | 3840×2160 (4K) | 29.97 fps |
+| Side | Fixed smartphone | 1920×1080 | up to 60 fps |
 | Overhead RGB-D | Intel RealSense D435I | RGB 1280×720 / Depth 848×480 | 15 fps |
 
 ---
@@ -150,6 +162,7 @@ This public sample pack is intended for technical evaluation and early research
 
 Additional materials may be available upon request:
 
+- Full **4K** egocentric MP4 recordings
 - Longer multi-view MP4 recordings
 - Additional HDF5 metric depth sequences
 - RealSense raw `.bag` recordings