[Python知识库]利用python的cv2完成视频分解图片

21.11.8

为了自己做数据集今天学习了一项新技能！

过程极简单直接上代码

# 视频分解图片
# from PIL import Image 
import cv2

cap = cv2.VideoCapture("7.mp4")# 获取当前路径下的视频打开cap 1 file name
isOpened = cap.isOpened# 判断是否打开‘
print(isOpened)
fps = cap.get(cv2.CAP_PROP_FPS)#帧率
width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))#w h
height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
print(fps,width,height)
i = 0
while(isOpened):
    if i == 200:#第200张结束，自行调节。
        break
    else:
        i = i+1
    (flag,frame) = cap.read()# 读取每一张 flag frame 
    fileName = 'img//in//'+str(i+990)+'.jpg'
    print(fileName)
    if flag == True:
        cv2.imwrite(fileName,frame,[cv2.IMWRITE_JPEG_QUALITY,100])
    # 可以调整图片大小
    # path='img//in//'+'0'+str(i)+'.jpg'
    # root = path
    # pic = Image.open(root)
    # pic = pic.resize((512, 512))
    # pic.save(path)
print('finish!')