Python读写视频帧——视频读取与写入_python .avi视频读取

视频分解

# 导入Opencv模块
import cv2

# 定义视频分解函数
def video2image(video):
    i = 0
    cap = cv2.VideoCapture(video)
    # 判断视频是否被正确打开
    isopened = cap.isOpened()
    while(isopened):
        i = i + 1
        ret,frame = cap.read()
        filename = str(i) + '.jpg'
        if ret == True:
        	# 将视频帧保存到合适路径
            cv2.imwrite('./input/vi/'+filename,frame)
        else:
            break
    print('转换成功！')

if __name__ == '__main__':
	# 将视频路径传入函数
    video2image('./test.avi')
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视频合成

import cv2

fps = 15   #视频帧率
fourcc = cv2.VideoWriter_fourcc('M', 'J', 'P', 'G')
videoWriter = cv2.VideoWriter('./output/fusion.avi', fourcc, fps, (328,254))
# 599表示一共有558帧
for i in range(1,559):
    p2=i
    img12 = cv2.imread('./input/fusion/'+str(p2)+'.jpg')
    videoWriter.write(img12)
videoWriter.release()
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