fix: use /tmp directory for uploads

app.py

@@ -21,8 +21,8 @@ except Exception as e:
 # A dictionary to store the paths of uploaded videos, using a session ID as the key
 video_sessions = {}
 
-# Create a directory to store temporary video uploads
-UPLOAD_DIR = "uploads"
+# *** FIX: Use the /tmp directory which is writeable on Hugging Face Spaces ***
+UPLOAD_DIR = "/tmp/uploads"
 os.makedirs(UPLOAD_DIR, exist_ok=True)
 
 
@@ -42,7 +42,10 @@ async def read_root():
 
 def generate_webcam_frames():
     """Generates annotated frames from the webcam."""
-    camera = cv2.VideoCapture(0)  # 0 is the default webcam
+    # Note: Webcam functionality will not work on Hugging Face Spaces
+    # as the server does not have a physical camera.
+    # This endpoint will work locally but fail on the server.
+    camera = cv2.VideoCapture(0)
     if not camera.isOpened():
         print("Error: Could not start webcam.")
         return
@@ -71,7 +74,6 @@ def generate_webcam_frames():
 @app.get("/video_feed/webcam")
 def video_feed_webcam():
     """Streams video from the webcam."""
-    # Use StreamingResponse for generator functions
     return StreamingResponse(generate_webcam_frames(), media_type="multipart/x-mixed-replace; boundary=frame")
 
 
@@ -128,5 +130,4 @@ def generate_upload_frames(session_id: str):
 @app.get("/video_feed/upload")
 def video_feed_upload(session_id: str):
     """Streams video from an uploaded file based on the session ID."""
-    # Use StreamingResponse for generator functions
     return StreamingResponse(generate_upload_frames(session_id), media_type="multipart/x-mixed-replace; boundary=frame")