Add optional 360° video processing dependencies

- Add video-360 extra for core 360° processing (py360convert, opencv, numpy, scipy)
- Add spatial-audio extra for spatial audio processing (librosa, soundfile)
- Add metadata-360 extra for enhanced metadata extraction (exifread)
- Add video-360-full extra for complete 360° feature set
- Update README with installation options and feature documentation
- Maintain backward compatibility with existing basic installation

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -63,6 +63,17 @@
 - **uv** for lightning-fast dependency management
 - **ruff** for code quality and formatting
 
+</td>
+</tr>
+<tr>
+<td colspan="2">
+
+### 🌐 **360° Video Support** *(Optional)*
+- **Spherical video detection** and metadata extraction
+- **Projection conversions** (equirectangular, cubemap, stereographic)
+- **360° thumbnail generation** with multiple viewing angles
+- **Spatial audio processing** for immersive experiences
+
 </td>
 </tr>
 </table>
@@ -74,11 +85,45 @@
 ### Quick Install
 
 ```bash
-# Using uv (recommended - fastest!)
+# Basic installation (standard video processing)
 uv add video-processor
 
-# Or with pip
+# With 360° video support
+uv add "video-processor[video-360]"
+
+# With spatial audio processing  
+uv add "video-processor[spatial-audio]"
+
+# Complete 360° feature set
+uv add "video-processor[video-360-full]"
+
+# Or using pip
 pip install video-processor
+pip install "video-processor[video-360-full]"
+```
+
+### Optional Features
+
+#### 🌐 360° Video Processing
+For immersive video processing capabilities:
+- **`video-360`**: Core 360° video processing (py360convert, opencv, numpy, scipy)
+- **`spatial-audio`**: Spatial audio processing (librosa, soundfile)  
+- **`metadata-360`**: Enhanced 360° metadata extraction (exifread)
+- **`video-360-full`**: Complete 360° package (includes all above)
+
+#### 📦 Dependency Details
+```bash
+# Core 360° processing
+uv add "video-processor[video-360]"
+# Includes: py360convert, opencv-python, numpy, scipy
+
+# Spatial audio support  
+uv add "video-processor[spatial-audio]"
+# Includes: librosa, soundfile
+
+# Complete 360° experience
+uv add "video-processor[video-360-full]"
+# Includes: All 360° dependencies + exifread
 ```
 
 ### Development Setup
@@ -90,6 +135,9 @@ cd video_processor
 # Install with all development dependencies
 uv sync --dev
 
+# Install with dev + 360° features
+uv sync --dev --extra video-360-full
+
 # Verify installation
 uv run pytest
 ```

pyproject.toml

@@ -28,6 +28,30 @@ dev = [
     "pytest-cov>=4.0.0",
 ]
 
+# Core 360° video processing
+video-360 = [
+    "py360convert>=0.1.0",      # 360° projection conversions
+    "opencv-python>=4.5.0",     # Advanced image processing
+    "numpy>=1.21.0",            # Mathematical operations
+    "scipy>=1.7.0",             # Scientific computing for spherical geometry
+]
+
+# Spatial audio processing for 360° videos
+spatial-audio = [
+    "librosa>=0.9.0",           # Audio analysis and processing
+    "soundfile>=0.11.0",        # Multi-channel audio I/O
+]
+
+# Enhanced metadata extraction for 360° videos
+metadata-360 = [
+    "exifread>=3.0.0",          # 360° metadata parsing
+]
+
+# Complete 360° video package
+video-360-full = [
+    "video-processor[video-360,spatial-audio,metadata-360]"
+]
+
 [tool.hatch.build.targets.wheel]
 packages = ["src/video_processor"]