python opencv视频拼接代码

以下是Python OpenCV视频拼接代码的示例：

import cv2

# 读取视频1
video1 = cv2.VideoCapture('video1.mp4')
# 读取视频2
video2 = cv2.VideoCapture('video2.mp4')

# 获取视频1的宽高和帧率
width1 = int(video1.get(cv2.CAP_PROP_FRAME_WIDTH))
height1 = int(video1.get(cv2.CAP_PROP_FRAME_HEIGHT))
fps1 = video1.get(cv2.CAP_PROP_FPS)
# 获取视频2的宽高和帧率
width2 = int(video2.get(cv2.CAP_PROP_FRAME_WIDTH))
height2 = int(video2.get(cv2.CAP_PROP_FRAME_HEIGHT))
fps2 = video2.get(cv2.CAP_PROP_FPS)

# 创建输出视频对象
fourcc = cv2.VideoWriter_fourcc(*'mp4v')
output_video = cv2.VideoWriter('output.mp4', fourcc, fps1, (width1 + width2, max(height1, height2)))

# 循环遍历视频1和视频2的帧
while True:
    # 读取视频1的帧
    ret1, frame1 = video1.read()
    # 读取视频2的帧
    ret2, frame2 = video2.read()

    # 如果视频1和视频2的帧都读取完毕，则退出循环
    if not ret1 and not ret2:
        break

    # 将视频1的帧和视频2的帧拼接到一起
    if ret1:
        output_video.write(frame1)
    else:
        output_video.write(frame2)

# 释放资源
video1.release()
video2.release()
output_video.release()

上述代码将视频1和视频2的帧逐帧拼接到一起，然后输出到一个新的视频文件中。在拼接过程中，如果视频1或视频2的帧读取完毕，则只将剩余的另一个视频的帧写入输出视频中。