Fix webcam mode AttributeError by using MediaMode enum

Fix webcam mode AttributeError by using MediaMode enum

Fixed the AttributeError: 'str' object has no attribute 'name' when switching to webcam mode.
Changed the string value "recv" to use the proper MediaMode.RECV enum from streamlit_webrtc package.
This ensures the mode parameter has the .name attribute that webrtc_streamer() expects.

app.py

@@ -5,7 +5,7 @@ import numpy as np
 import torch
 from collections import deque
 from transformers import AutoFeatureExtractor, AutoModelForVideoClassification
-from streamlit_webrtc import webrtc_streamer, VideoTransformerBase, RTCConfiguration
+from streamlit_webrtc import webrtc_streamer, VideoTransformerBase, RTCConfiguration, MediaMode
 
 # Constants
 NUM_FRAMES = 16
@@ -29,7 +29,6 @@ st.title("Dashcam Accident Predictor")
 st.write("**higher score = higher accident probability**")
 
 # Function to run inference on a saved video file
-
 def run_inference_on_video(video_path):
     cap = cv2.VideoCapture(video_path)
     total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
@@ -96,7 +95,7 @@ else:
 
     webrtc_streamer(
         key="dashcam-webcam",
-        mode="recv",
+        mode=MediaMode.RECV,  # Changed from "recv" string to MediaMode enum
         rtc_configuration=RTCConfiguration({
             "iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]
         }),