Update README.md

README.md

@@ -1,26 +1,29 @@
 # Sermon Converter
 
-A Rust-based service that automatically monitors a directory for new sermon video files and converts them to an optimized format for streaming.
+An event-driven Rust service that automatically detects and converts sermon video files for efficient storage and streaming. Uses the shared `video_processing` crate for optimal performance.
 
 ## Features
 
-- Automatic detection of new MP4 files in the watch directory
-- Efficient video conversion using FFmpeg
-- Preserves audio quality while optimizing video for streaming
-- Automatic file organization with date-based naming
-- Syncthing-aware (ignores temporary sync files)
+- **Event-driven file detection** - No polling, instant response to new files
+- **AV1 video conversion** with Intel QSV hardware acceleration
+- **Preserves original filenames** - Backend handles metadata parsing
+- **File stability checking** - Ensures files are fully written before processing
+- **Syncthing-aware** - Ignores temporary sync files
+- **Efficient disk space usage** with modern compression
+- **Configurable via environment variables**
 
 ## Prerequisites
 
 - Rust (latest stable version)
-- FFmpeg installed and available in PATH
+- FFmpeg with AV1 support (or configure different codec)
+- Intel Media SDK (for QSV acceleration, optional)
 - Sufficient disk space for video processing
 
 ## Installation
 
 1. Clone the repository:
 ```bash
-git clone <your-repository-url>
+git clone <repository-url>
 cd sermon-converter
 ```
 
@@ -31,15 +34,40 @@ cargo build --release
 
 ## Configuration
 
-The service uses environment variables for configuration:
+Create a `.env` file based on `.env.example`:
 
-- `SERMON_WATCH_PATH`: Directory to monitor for new sermon videos
-- `SERMON_OUTPUT_PATH`: Directory where converted videos will be saved
-
-Example:
 ```bash
-export SERMON_WATCH_PATH="/path/to/watch/directory"
-export SERMON_OUTPUT_PATH="/path/to/output/directory"
+cp .env.example .env
+nano .env
+```
+
+### Required Environment Variables
+
+```bash
+# Directory paths (REQUIRED)
+SERMON_WATCH_PATH=/path/to/watch/sermons
+SERMON_OUTPUT_PATH=/path/to/output/sermons
+
+# FFmpeg Configuration
+FFMPEG_BINARY=ffmpeg
+VIDEO_CODEC=av1_qsv              # or libx264, libx265, etc.
+HW_ACCEL=qsv                     # hardware acceleration
+HW_DEVICE=qsv=hw
+FFMPEG_PRESET=4
+VIDEO_BITRATE=6M
+MAX_BITRATE=12M
+BUFFER_SIZE=24M
+AUDIO_CODEC=libopus              # or copy, aac, etc.
+AUDIO_BITRATE=192k
+
+# File Stability Settings
+STABILITY_CHECK_INTERVAL=1       # seconds between stability checks
+STABILITY_REQUIRED_CHECKS=30     # consecutive stable checks required
+MAX_STABILITY_WAIT_HOURS=0.5     # maximum time to wait for stability
+
+# Directory Settings
+CREATE_YEAR_MONTH_DIRS=true      # organize by date (unused currently)
+PRESERVE_ORIGINAL_FILES=false    # delete original after conversion
 ```
 
 ## Usage
@@ -56,12 +84,27 @@ Or run the built binary:
 
 The service will:
 1. Process any existing MP4 files in the watch directory
-2. Continue monitoring for new files
-3. Automatically convert new MP4 files as they appear
+2. Watch for new files using efficient event-driven detection
+3. Wait for file stability before processing
+4. Convert to optimized format with same filename
+5. Output converted files for backend metadata handling
+
+## Expected File Format
+
+Sermon files should follow the naming convention:
+```
+Title - Speaker Month Day Year.mp4
+```
+
+Examples:
+- `God's People in the Time of the End - Pastor John Smith December 28 2024.mp4`
+- `The Great Hope - Elder Jane Doe January 15 2025.mp4`
+
+The backend will parse this format automatically for metadata.
 
 ## Running as a System Service
 
-To run as a systemd service, create a service file at `/etc/systemd/system/sermon-converter.service`:
+Create a systemd service file at `/etc/systemd/system/sermon-converter.service`:
 
 ```ini
 [Unit]
@@ -70,10 +113,23 @@ After=network.target
 
 [Service]
 Type=simple
-User=<your-username>
-Environment="SERMON_WATCH_PATH=/path/to/watch/directory"
-Environment="SERMON_OUTPUT_PATH=/path/to/output/directory"
-ExecStart=/path/to/sermon_converter
+User=rockvilleav
+Group=rockvilleav
+ExecStart=/usr/local/bin/sermon_converter
+WorkingDirectory=/home/rockvilleav/sermon-converter
+
+# Load environment variables from .env file
+EnvironmentFile=/home/rockvilleav/sermon-converter/.env
+
+# System environment variables
+Environment=HOME=/home/rockvilleav
+Environment=USER=rockvilleav
+
+# Intel Media Stack (if using QSV)
+Environment=LIBVA_DRIVER_NAME=iHD
+Environment=LIBVA_DRIVERS_PATH=/opt/intel/media/lib64
+Environment=LD_LIBRARY_PATH=/opt/intel/media/lib64
+
 Restart=always
 RestartSec=10
 
@@ -85,30 +141,78 @@ Enable and start the service:
 ```bash
 sudo systemctl enable sermon-converter
 sudo systemctl start sermon-converter
+sudo systemctl status sermon-converter
 ```
 
+View logs:
+```bash
+sudo journalctl -u sermon-converter -f
+```
+
+## Architecture
+
+This service uses a clean, event-driven architecture:
+
+- **Event Detection**: Uses `inotify` for instant file detection (no polling)
+- **File Stability**: Ensures files are completely written before processing
+- **Shared Logic**: Uses `video_processing` crate for common functionality
+- **Simple Processing**: Convert file, keep same name, let backend handle metadata
+- **Resource Efficient**: Only uses CPU/disk when actually processing files
+
 ## Video Conversion Details
 
-The service converts videos using the following FFmpeg settings:
-- Video codec: H.264 (libx264)
-- Audio codec: AAC
-- Video preset: medium
-- Constant Rate Factor (CRF): 23
-- Pixel format: yuv420p
-- Audio bitrate: 128k
-- Audio sample rate: 44100 Hz
-
-## File Naming Convention
-
-Converted files are named based on the original filename's date pattern:
-- Input: `YYYY-MM-DD_sermon.mp4`
-- Output: `YYYY-MM-DD_sermon_converted.mp4`
+Default settings (configurable via .env):
+- **Video Codec**: AV1 with Intel QSV acceleration
+- **Audio Codec**: Opus (high efficiency)
+- **Hardware Acceleration**: Intel Quick Sync Video
+- **Video Bitrate**: 6Mbps (configurable)
+- **Audio Bitrate**: 192kbps (configurable)
 
 ## Troubleshooting
 
-- **FFmpeg not found**: Ensure FFmpeg is installed and in your system PATH
-- **Permission denied**: Check that the service has read/write permissions for both watch and output directories
-- **Files not detected**: Verify the watch directory path and that files are complete before processing
+### Common Issues
+
+**Service fails to start:**
+```bash
+# Check if .env file exists and has correct paths
+ls -la /home/rockvilleav/sermon-converter/.env
+
+# Verify directories exist and are accessible
+ls -la /path/to/watch/sermons
+ls -la /path/to/output/sermons
+```
+
+**FFmpeg errors:**
+```bash
+# Test FFmpeg with your codec
+ffmpeg -encoders | grep av1
+ffmpeg -hwaccels | grep qsv
+
+# Check Intel Media SDK installation
+vainfo
+```
+
+**Files not being detected:**
+```bash
+# Check logs for file events
+sudo journalctl -u sermon-converter -f
+
+# Verify file permissions
+ls -la /path/to/watch/sermons/
+```
+
+**Out of disk space:**
+```bash
+# Service checks for 5GB minimum free space
+df -h /path/to/output/sermons
+```
+
+### Log Analysis
+
+The service provides detailed logging:
+- `INFO` level: Normal operation, file detection, conversion progress
+- `WARN` level: Non-fatal issues (low disk space, sync failures)
+- `ERROR` level: Conversion failures, configuration errors
 
 ## License
 
@@ -116,4 +220,4 @@ See LICENSE file for details.
 
 ## Contributing
 
-Contributions are welcome! Please submit pull requests or issues through the repository.
+Contributions are welcome! This service is part of a larger church media processing system.