allow client to select video index

app.py

@@ -32,19 +32,19 @@ def draw_stats(frame: MatLike, session: Session):
     """
 
     y0, dy = 30, 36
-    for i, line in enumerate(text.split('\n')):
+    for i, line in enumerate(text.split("\n")):
         (text_width, text_height), _ = cv2.getTextSize(line, font, font_scale, thickness)
         x = frame.shape[1] - text_width - 10
         y = y0 + (i - 1) * dy
         cv2.putText(frame, line, (x, y), font, font_scale, color, thickness, cv2.LINE_AA)
 
-def process_frame(session_id: str):
+def process_frame(session_id: str, video_path: str):
     global sessions
 
     session: Session = sessions.get(session_id, None)
 
     if session is not None:
-        cap = cv2.VideoCapture("classroom.mp4")
+        cap = cv2.VideoCapture(video_path)
         framerate = cap.get(cv2.CAP_PROP_FPS)
         frame_duration = 1 / framerate
 
@@ -107,13 +107,17 @@ def stream_mjpeg(session_id: str):
 def get_video():
     global sessions
 
-    session_id = request.args.get("id", "default")
+    session_id = request.args.get("video_index", "0")
     show_stats = request.args.get("show_stats", "1") == "1"
 
+    video_index = int(request.args.get("video_index", 0)) % 4
+    video_files = sorted([f for f in os.listdir("videos") if f.lower().endswith((".mp4", ".avi", ".mov"))])
+    video_path = os.path.join("videos", video_files[int(video_index)])
+
     if session_id not in sessions:
         session = Session(session_id)
         sessions[session_id] = session
-        threading.Thread(target=process_frame, args=[session_id], daemon=True).start()
+        threading.Thread(target=process_frame, args=[session_id, video_path], daemon=True).start()
     else:
         session = sessions[session_id]
         session.show_stats = show_stats

videos/bottle-detection.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d52ba94aedf8a923c342fe9ea1d2bd85f712c4cc0f49a6de1bac43eebe3a48ff
+size 504961

videos/head-pose-face-detection-female-and-male.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:650166430c4bf9ddc470ac17a86d1fcbd6d76c64e60ed73675fdc6b3e3d3af38
+size 16788193

videos/worker-zone-detection.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b8b58b8100a81600bc42ee7ee082ced777b12a32a3619139ef289d27cbdcd284
+size 12596893