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opencv如何剪辑视频?

opencv如何剪辑视频?


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使用OpenCV剪辑视频的基本步骤如下:

1. 导入库
import cv2
2. 打开视频文件
video_path = 'input_video.mp4'
cap = cv2.VideoCapture(video_path)
3. 获取视频属性
fps = int(cap.get(cv2.CAP_PROP_FPS))
width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
4. 创建VideoWriter对象
output_path = 'output_video.mp4'
fourcc = cv2.VideoWriter_fourcc(*'mp4v')
out = cv2.VideoWriter(output_path, fourcc, fps, (width, height))
5. 设置剪辑的起始和结束时间
start_time = 10  # 起始时间(秒)
end_time = 20    # 结束时间(秒)

start_frame = int(start_time * fps)
end_frame = int(end_time * fps)
6. 读取并写入指定帧
frame_count = 0

while cap.isOpened():
    ret, f...

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