Add comprehensive video playback optimization for smooth performance

Environment variable optimizations:
- KIVY_WINDOW='pygame' - Better window backend performance
- KIVY_AUDIO='ffpyplayer' - Optimized audio playback
- KIVY_GL_BACKEND='gl' - Use OpenGL for better graphics
- FFMPEG_THREADS='4' - Multi-threaded video decoding
- LIBPLAYER_BUFFER='2048000' - 2MB buffer for smooth playback
- SDL_AUDIODRIVER='alsa' - Better audio on Raspberry Pi

Kivy configuration optimizations:
- multisampling=0 - Disable for better performance
- fast_rgba=1 - Enable fast RGBA mode
- Stereo audio (channels=2)
- Reduced logging overhead (warning level)

Video widget enhancements:
- FFmpeg buffer optimization (2MB)
- Multi-threaded decoding (4 threads)
- Ignore index for better seeking
- Allow codec fallback
- 60 FPS animation delay

New video optimization script (.video-optimization.sh):
- GPU memory increased to 256MB
- Install video codec libraries
- Optimize swappiness to 30 (better memory management)
- CPU forced to performance mode
- Filesystem cache optimization

Installation integration:
- Runs video optimization automatically on Raspberry Pi
- Configures GPU memory, libraries, and system settings
- Improves overall video playback smoothness

This addresses video stuttering, frame drops, and playback lag
by optimizing at multiple levels: environment, application, and system.

.video-optimization.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+# Video playback optimization script for Raspberry Pi
+# Improves video smoothness and reduces stuttering
+
+echo "Optimizing system for smooth video playback..."
+
+# 1. Increase GPU memory split for better video performance
+if [ -f /boot/config.txt ]; then
+    echo "Checking GPU memory configuration..."
+    if grep -q "gpu_mem=" /boot/config.txt; then
+        # GPU memory already configured, check if it's sufficient
+        CURRENT_GPU_MEM=$(grep "gpu_mem=" /boot/config.txt | head -1 | cut -d'=' -f2)
+        if [ "$CURRENT_GPU_MEM" -lt 256 ]; then
+            sudo sed -i 's/gpu_mem=.*/gpu_mem=256/' /boot/config.txt
+            echo "✓ GPU memory increased to 256MB for video"
+        fi
+    else
+        # Add GPU memory setting
+        echo "gpu_mem=256" | sudo tee -a /boot/config.txt > /dev/null
+        echo "✓ GPU memory set to 256MB for video"
+    fi
+fi
+
+# 2. Install video codec support
+echo "Installing video codec libraries..."
+sudo apt-get install -y \
+    libva-drm2 \
+    libva2 \
+    libavcodec-extra \
+    libavutil-dev \
+    2>/dev/null || true
+
+# 3. Optimize swappiness for better memory management
+echo "Optimizing memory management..."
+if [ -f /proc/sys/vm/swappiness ]; then
+    CURRENT_SWAP=$(cat /proc/sys/vm/swappiness)
+    if [ "$CURRENT_SWAP" -gt 30 ]; then
+        echo 30 | sudo tee /proc/sys/vm/swappiness > /dev/null
+        echo "vm.swappiness=30" | sudo tee -a /etc/sysctl.conf > /dev/null
+        echo "✓ Swappiness optimized"
+    fi
+fi
+
+# 4. Disable CPU frequency scaling for consistent performance
+echo "Ensuring CPU performance mode..."
+for cpu in /sys/devices/system/cpu/cpu[0-9]*; do
+    if [ -f "$cpu/cpufreq/scaling_governor" ]; then
+        echo performance | sudo tee "$cpu/cpufreq/scaling_governor" > /dev/null 2>&1 || true
+    fi
+done
+echo "✓ CPU set to performance mode"
+
+# 5. Optimize file system cache
+echo "Optimizing filesystem cache..."
+echo 50 | sudo tee /proc/sys/vm/vfs_cache_pressure > /dev/null
+echo "vm.vfs_cache_pressure=50" | sudo tee -a /etc/sysctl.conf > /dev/null
+echo "✓ Filesystem cache optimized"
+
+echo ""
+echo "✅ Video playback optimization complete!"
+echo "Note: Some changes require a reboot to take effect."