图像视频互转python 实现

备份下，总是用。
python-opencv实现

视频转图片

采样间隔可调

# coding:utf-8# Copyright@hitzym# video2img# Dec,7,2017import cv2vc=cv2.VideoCapture("~/video.mp4")c=1  if vc.isOpened():      rval,frame=vc.read()  else:      rval=False  while rval:      rval,frame=vc.read()    rows, cols, channel = frame.shape    # frame2=cv2.resize(frame,(cols/3,rows/3),fx=0,fy=0,interpolation=cv2.INTER_AREA)    if ( c%5 == 0):                            #every 5 fps write frame to img        cv2.imwrite(('./yourImgPath/'+str(c)+'.jpg'),frame)        # cropped001 = frame2[0:300,300:600]   #y change from 0 to 300 x change from 300 to 600        # cv2.imwrite('./cropped/'+str(c)+'_001.jpg',cropped001)    c=c+1      cv2.waitKey(1)  vc.release()  

图片转视频

#coding:utf-8import cv2import osimport numpy as npfrom PIL import Image, ImageDraw,ImageFontfps = 2fourcc = cv2.VideoWriter_fourcc('M', 'J', 'P', 'G')video_writer = cv2.VideoWriter(filename='./result.avi', fourcc=fourcc, fps=fps, frameSize=(1856,1056))for i in range(0,6000):    p = i    # print(str(p)+'.png'+'233333')    if os.path.exists('yourImgPath/'+str(p)+'.jpg'):    #判断图片是否存在        img = cv2.imread(filename='yourImgPath/'+str(p)+'.jpg')        cv2.waitKey(100)        video_writer.write(img)        print(str(p) + '.jpg' + ' done!')video_writer.release()

恳请各位看官斧正！~
鞠躬！