Update README.md

Author: e04

README.md

@@ -32,29 +32,12 @@ The `go-irl` application supports several command line options to customize its
 - **`-srtla-port`** (default: `5000`)  
   Port for the SRTLA upstream. This is the port where your mobile streaming client (IRL Pro, Moblin, BELABOX, etc.) will connect to send the bonded stream.
 
+- **`-passphrase`** (default: `""`)  
+  Optional passphrase for SRT encryption. When set, both the server and client must use the same passphrase to establish a secure encrypted connection. This adds an extra layer of security to your stream.
+
 - **`-verbose`** (default: `false`)  
   Enable verbose logging in SRTLA. Use this flag to get detailed logging information for troubleshooting connection issues.
 
-### Usage Examples
-
-Run with default settings:
-
-```bash
-./go-irl
-```
-
-Run with custom ports:
-
-```bash
-./go-irl -srtla-port 5001 -udp-port 5003 -ws-port 8889 -bs-port 10000
-```
-
-Run with verbose logging enabled:
-
-```bash
-./go-irl -verbose
-```
-
 ## Getting Started
 
 Follow these steps to download the tools, and configure OBS.
@@ -115,19 +98,20 @@ First, configure OBS to receive the stream and use the bridge for stats and scen
         | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
         | simple | <img width="345" alt="スクリーンショット 2025-06-29 22 42 24" src="https://github.com/user-attachments/assets/ce8dd8b6-fb3b-44e8-aacc-f74f24d3b2b5" /> |
         | graph  | <img width="347" alt="スクリーンショット 2025-06-29 22 41 47" src="https://github.com/user-attachments/assets/bd77524d-f5ae-43ce-84b9-616bca1e6110" /> |
-        | none   | (none, just for switching scene)       
+        | none   | (none, just for switching scene)                                                                                                                       |
 
         **Metric Explanations (left to right):**
-        
+
         - Bitrate (Mbps)
         - RTT (ms)
         - Packet Loss (%)
+
     - Set the Width and Height as desired.
     - **IMPORTANT:** For automatic scene switching to work, scroll down in the properties window and set **Page permissions** to **Advanced access to OBS**.
     - Click OK.
 
 <img width="800" src="https://github.com/user-attachments/assets/6bb9e601-a2e1-453c-98e0-ea6488f838e4" />
-                                                                                                                       
+
 
 ---