diff --git a/opencv_webcamv_v03.py b/opencv_webcam_v03.py
similarity index 94%
rename from opencv_webcamv_v03.py
rename to opencv_webcam_v03.py
index c7018b6..e616e3c 100644
--- a/opencv_webcamv_v03.py
+++ b/opencv_webcam_v03.py
@@ -1,6 +1,6 @@
-# OpenCV Webcam Script v0.2
+# OpenCV Webcam Script v0.3
 # 创建人：曾逸夫
-# 创建时间：2022-01-02
+# 创建时间：2022-01-08
 
 import cv2
 from pathlib import Path
@@ -16,8 +16,8 @@ from utils.frame_opt import frame_opt
 
 def parse_args(known=False):
     parser = argparse.ArgumentParser(description='OpenCV Webcam Script v0.2')
-    parser.add_argument('--device', '-dev', default=0,
-                        type=int, help='device index for webcam')
+    parser.add_argument('--device', '-dev', default='0',
+                        type=str, help='device index for webcam, 0 or rtsp')
     parser.add_argument('--quit', '-q', default="q",
                         type=str, help='quit key for webcam')
     parser.add_argument('--is_autoSaveFrame', '-isasf',
@@ -62,7 +62,9 @@ def webcam_opencv(device_index=0, quit_key="q", pause_key="p", is_autoSaveFrame=
 
     # ------------------程序开始------------------
     s_time = time.time()  # 起始时间
-    cap = cv2.VideoCapture(device_index)  # 连接设备
+    dev_index = eval(device_index) if device_index.isnumeric(
+    ) else device_index  # 设备选择 (usb 0,1,2; rtsp)
+    cap = cv2.VideoCapture(dev_index)  # 连接设备
     frame_width = cap.get(3)  # 宽度
     frame_height = cap.get(4)  # 高度
     fps = cap.get(5)  # 帧率
diff --git a/v03.md b/v03.md
index 0acb9c9..ff5989e 100644
--- a/v03.md
+++ b/v03.md
@@ -7,7 +7,7 @@
 
 
 ### 功能更新
-
+- 加入rtsp功能
 
 
 ### BUG修复
\ No newline at end of file