【python + openCV】视频转图片详解

详解"/>

【python + openCV】视频转图片详解

输入输出路径

import cv2
videoFile = '/Users/fanc/Downloads/image/PeppaPig.mp4'
outputFile = '/Users/fanc/Downloads/image/frame'

cv2在opencv-python包里面，安装的时候pip install opencv-python
上面是输入文件的路径，下面是输出文件的路径，注意最后的frame是文件名的前缀

vc = cv2.VideoCapture(videoFile)
c = 1
if vc.isOpened():rval, frame = vc.read()
else:print('openerror!')rval = False

读取视频，判断是否打开成功

timeF = 100  #视频帧计数间隔次数
while rval:print(1)#print(c)rval, frame = vc.read()if c % timeF == 0:print(2)cv2.imwrite(outputFile + str(int(c / timeF)) + '.jpg', frame)c += 1cv2.waitKey(1)
vc.release()

循环截取帧，保存并命名

完整代码

import cv2
videoFile = '/Users/fanc/Downloads/image/PeppaPig.mp4'
outputFile = '/Users/fanc/Downloads/image/frame'
vc = cv2.VideoCapture(videoFile)
c = 1
if vc.isOpened():rval, frame = vc.read()
else:print('openerror!')rval = FalsetimeF = 100  #视频帧计数间隔次数
while rval:print(1)#print(c)rval, frame = vc.read()if c % timeF == 0:print(2)cv2.imwrite(outputFile + str(int(c / timeF)) + '.jpg', frame)c += 1cv2.waitKey(1)
vc.release()

测试结果

把小猪佩奇截取下来了

之后就可以对帧进行图像处理了