如何修改代码可以将平均价格打印到视频中?
import cv2
import numpy as np
# Load the video capture object
cap = cv2.VideoCapture("video.mp4")
# Get the frame rate of the video
frame_rate = cap.get(cv2.CAP_PROP_FPS)
# Create a video writer object
fourcc = cv2.VideoWriter_fourcc(*"mp4v")
out = cv2.VideoWriter("output.mp4", fourcc, frame_rate, (640, 480))
# Keep looping over the frames in the video
while True:
# Read the next frame from the video capture object
ret, frame = cap.read()
# If the frame is empty (end of video), break out of the loop
if not ret:
break
# Convert the frame to a NumPy array
frame_array = np.array(frame)
# Calculate the average price of the frame
average_price = np.mean(frame_array)
# Print the average price to the video
out.write(average_price.astype(np.float32))
# Update the video writer with the new frame
out.write(frame_array)
# Release the video capture and video writer objects
cap.release()
out.release()
This code will capture a video from the file "video.mp4", calculate the average price of each frame, and print the average price to the video.