from ultralytics import YOLO
model = YOLO("yolov8m.pt")

cap = cv2.VideoCapture(tfile.name)
while cap.isOpened():
    ret, frame = cap.read()
    if not ret:
        break
    results = model(frame)
    annotated_frame = results[0].plot()
    stframe.image(annotated_frame, channels="BGR")