Inside Ultralytics video https://youtu.be/Zgi9g1ksQHc (#5546)

* Update detect.py Usage examples

* Inside Ultralytics at https://youtu.be/Zgi9g1ksQHc

README.md

@@ -109,11 +109,11 @@ the [latest YOLOv5 release](https://github.com/ultralytics/yolov5/releases) and
 
 ```bash
 $ python detect.py --source 0  # webcam
-                            file.jpg  # image
-                            file.mp4  # video
+                            img.jpg  # image
+                            vid.mp4  # video
                             path/  # directory
                             path/*.jpg  # glob
-                            'https://youtu.be/NUsoVlDFqZg'  # YouTube
+                            'https://youtu.be/Zgi9g1ksQHc'  # YouTube
                             'rtsp://example.com/media.mp4'  # RTSP, RTMP, HTTP stream
 ```
 

detect.py

@@ -3,7 +3,13 @@
 Run inference on images, videos, directories, streams, etc.
 
 Usage:
-    $ python path/to/detect.py --source path/to/img.jpg --weights yolov5s.pt --img 640
+    $ python path/to/detect.py --weights yolov5s.pt --source 0  # webcam
+                                                             img.jpg  # image
+                                                             vid.mp4  # video
+                                                             path/  # directory
+                                                             path/*.jpg  # glob
+                                                             'https://youtu.be/Zgi9g1ksQHc'  # YouTube
+                                                             'rtsp://example.com/media.mp4'  # RTSP, RTMP, HTTP stream
 """
 
 import argparse

tutorial.ipynb

@@ -438,11 +438,11 @@
         "\n",
         "```shell\n",
         "python detect.py --source 0  # webcam\n",
-        "                          file.jpg  # image \n",
-        "                          file.mp4  # video\n",
+        "                          img.jpg  # image \n",
+        "                          vid.mp4  # video\n",
         "                          path/  # directory\n",
         "                          path/*.jpg  # glob\n",
-        "                          'https://youtu.be/NUsoVlDFqZg'  # YouTube\n",
+        "                          'https://youtu.be/Zgi9g1ksQHc'  # YouTube\n",
         "                          'rtsp://example.com/media.mp4'  # RTSP, RTMP, HTTP stream\n",
         "```"
       ]