fix: update port to use env + rempove framerate cap + put video on repeat

src/app.py

@@ -2,8 +2,10 @@ from flask import Flask, Response, stream_with_context
 import cv2
 import threading
 import time
+import os
 
 app = Flask(__name__)
+PORT = int(os.environ.get("PORT", 5000))
 
 latest_frame = None
 lock = threading.Lock()
@@ -27,13 +29,16 @@ def video_reader():
     while True:
         ret, frame = cap.read()
 
-        if ret:
+        if not ret:
+            cap.set(cv2.CAP_PROP_POS_FRAMES, 0)  # Rewind to start if video ends
+            continue
+        else:
             with lock:
                 cv2.putText(frame, f"{measured_fps: .0f}", (frame.shape[1] - 70, 30), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2, cv2.LINE_AA)
                 latest_frame = frame
-        frame_count += 1
 
         # measure FPS
+        frame_count += 1
         now = time.time()
         if now - last_time >= rolling_duration:
             measured_fps = frame_count / (now - last_time)
@@ -41,12 +46,12 @@ def video_reader():
             last_time = now
 
         # control framerate
-        next_frame_time += frame_duration
-        sleep_time = next_frame_time - time.time()
-        if sleep_time > 0:
-            time.sleep(sleep_time)
-        else:
-            next_frame_time = time.time()
+        # next_frame_time += frame_duration
+        # sleep_time = next_frame_time - time.time()
+        # if sleep_time > 0:
+        #     time.sleep(sleep_time)
+        # else:
+        #     next_frame_time = time.time()
 
 def generate():
     while True:
@@ -65,4 +70,4 @@ def video_feed():
 if __name__ == '__main__':
     t = threading.Thread(target=video_reader, daemon=True)
     t.start()
-    app.run(host='0.0.0.0', port=5000, threaded=True)
+    app.run(host='0.0.0.0', port=PORT, threaded=True)