網(wǎng)上有很多程序示例描述了如何在python中將多張圖片合成為視頻，但好像都沒有關(guān)注一個小問題——被合成的那些圖片的尺寸應(yīng)該一致，并且和程序中給定的參數(shù)一致。我遇到的問題就是，如果多張圖片的尺寸不一致，或者如果圖片的尺寸與給定的參數(shù)不一致，則生成出來的視頻會有問題，無法播放。針對這個問題，有必要對多張圖片的尺寸進行統(tǒng)一，即通過下面的resize函數(shù)實現(xiàn)。?

            
              import cv2
import glob

def resize(img_array, align_mode):
    _height = len(img_array[0])
    _width = len(img_array[0][0])
    for i in range(1, len(img_array)):
        img = img_array[i]
        height = len(img)
        width = len(img[0])
        if align_mode == 'smallest':
            if height < _height:
                _height = height
            if width < _width:
                _width = width
        else:
            if height > _height:
                _height = height
            if width > _width:
                _width = width

    for i in range(0, len(img_array)):
        img1 = cv2.resize(img_array[i], (_width, _height), interpolation=cv2.INTER_CUBIC)
        img_array[i] = img1

    return img_array, (_width, _height)

def images_to_video(path):
    img_array = []

    for filename in glob.glob(path+'/*.png'):
        img = cv2.imread(filename)
        if img is None:
            print(filename + " is error!")
            continue
        img_array.append(img)

    # 圖片的大小需要一致
    img_array, size = resize(img_array, 'largest')
    fps = 1
    out = cv2.VideoWriter('demo.avi', cv2.VideoWriter_fourcc(*'DIVX'), fps, size)

    for i in range(len(img_array)):
        out.write(img_array[i])
    out.release()

def main():
    path = "../pictures/test/"
    images_to_video(path)

if __name__ == "__main__":
    main()


            
          

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