diff --git a/.env.example b/.env.example
index 953fee0..eb390ed 100644
--- a/.env.example
+++ b/.env.example
@@ -1,18 +1,38 @@
+# --- Server Configuration ---
+# HTTP Server port
 PORT=3000
+# HTTP Server listen address
 HOST=0.0.0.0
 
-# AWS S3 / MinIO Configuration
-AWS_REGION=us-east-1
-S3_BUCKET_ADDRESS=https://s3.example.com/your_bucket_name
-
-# For MinIO or other S3-compatible storage
-S3_ENDPOINT=http://127.0.0.1:9000
-S3_FORCE_PATH_STYLE=true
-
-# Application Title
+# --- Web Interface ---
+# Web page title displayed to the user
 APP_TITLE=S3 Media Transcoder
 
-# Session Cache (Valkey / Redis)
+# --- Transcoding Engine ---
+# Path to a customized FFmpeg build (e.g., jellyfin-ffmpeg for hardware acceleration)
+JELLYFIN_FFMPEG_PATH=/usr/lib/jellyfin-ffmpeg/ffmpeg
+# Path to a customized FFprobe build
+JELLYFIN_FFPROBE_PATH=/usr/lib/jellyfin-ffmpeg/ffprobe
+
+# --- Session Management (Valkey / Redis) ---
+# Connection string for Valkey/Redis
 VALKEY_URL=redis://localhost:6379
+# Database index for Valkey/Redis
 VALKEY_DB=0
+# Key prefix inside Valkey/Redis to avoid conflicts with other apps
 VALKEY_PREFIX=mediaconverter
+
+# --- Storage Configuration (AWS S3 / MinIO) ---
+# Full endpoint/domain to your S3 bucket root, or just S3 Bucket Name
+S3_BUCKET_ADDRESS=https://s3.example.com/your_bucket_name
+# AWS region for S3 (e.g., us-east-1)
+AWS_REGION=us-east-1
+
+# Optional: S3 global credentials. If not specified, web UI login handles authentication.
+# AWS_ACCESS_KEY_ID=
+# AWS_SECRET_ACCESS_KEY=
+
+# Optional: For MinIO or other S3-compatible self-hosted storage
+S3_ENDPOINT=http://127.0.0.1:9000
+# Whether to force path-style S3 URLs (usually required for MinIO)
+S3_FORCE_PATH_STYLE=true
diff --git a/ecosystem.config.js b/ecosystem.config.js
index e24777e..6071f5e 100644
--- a/ecosystem.config.js
+++ b/ecosystem.config.js
@@ -10,17 +10,7 @@ module.exports = {
       watch: false,
       max_memory_restart: '512M',
       env: {
-        NODE_ENV: 'production',
-        PORT: 3000,
-        HOST: '0.0.0.0',
-        AWS_REGION: 'us-east-1',
-        S3_BUCKET_ADDRESS: 'https://s3.example.com/your_bucket_name',
-        S3_ENDPOINT: 'http://127.0.0.1:9000',
-        S3_FORCE_PATH_STYLE: 'true',
-        APP_TITLE: 'S3 Media Transcoder',
-        VALKEY_URL: 'redis://localhost:6379',
-        VALKEY_DB: 0,
-        VALKEY_PREFIX: 'mediaconverter'
+        NODE_ENV: 'production'
       }
     }
   ]