OpenCV：视频分解为图片/图片合成为视频

ゞ浴缸里的玫瑰 2022-01-14 15:05 384阅读 0赞

*  视频分解为图片

import cv2
    
    cap = cv2.VideoCapture("1.mp4")
    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))
    height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
    print(fps,width,height)
    i = 0
    while(isOpened):
        if i == 10:
            break
        else:
            i += 1
        (flag,frame) = cap.read() # 读取每一张 flag frame 
        fileName = 'image'+str(i)+'.jpg'
        print(fileName)
        if flag == True:
            cv2.imwrite(fileName,frame,[cv2.IMWRITE_JPEG_QUALITY,100])

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]  
可以看到，已经成功将测试视频，分解成了10张图片。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 1]

*  图片合成为视频

import cv2
    
    img = cv2.imread('image1.jpg')
    imgInfo = img.shape
    size = (imgInfo[1],imgInfo[0])
    print(size)
    videoWrite = cv2.VideoWriter('2.mp4',-1,5,size)
    
    for i in range(1,11):
        fileName = 'image'+str(i)+'.jpg'
        img = cv2.imread(fileName)
        videoWrite.write(img)

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70]: /images/20220114/75e0e36c25f84c15a12c11af2e07a247.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70 1]: /images/20220114/3a87ad1acea24ea5ab519d7979e4de2f.png