獲取視頻的某一幀作爲圖片保存

# 獲取視頻某一幀保存爲圖片
def getImage():
    for name in os.listdir('E:\\HowTo\\2019-09-12-HowTo\\'):
        path = os.path.join('E:\\HowTo\\2019-09-12-HowTo\\', name)
        video = re.compile('.*?.mp4').findall(path)
        video_name = re.compile('(.*?).mp4').findall(name)
        if video:
            vc = cv2.VideoCapture(video[0])  # 讀入視頻文件
            c = 1
            if vc.isOpened():  # 判斷是否正常打開
                rval, frame = vc.read()
            else:
                rval = False
            while rval:  # 循環讀取視頻幀
                rval, frame = vc.read()
                timeF = 1000
                if (c % timeF == 0):  # 每隔timeF幀進行存儲操作
                    print(video_name[0])
                    # cv2.imwrite('image/' + video_name[0] + '.jpg', frame)  # 存儲爲圖像
                    cv2.imencode('E:\\HowTo\\2019-09-12-HowTo\\' + video_name[0] + '.jpg', frame)[1].tofile('E:\\HowTo\\2019-09-12-HowTo\\' + video_name[0] + '.jpg')
                    break
                c = c + 1
        
        
        # 處理文檔
        # video_official = re.compile('(.*?.docx)',re.S).findall(name)
        # video_name = re.compile('(.*?.mp4.txt)').findall(name)
        # if video_name:
        #     new_name = video_name[0].replace('.mp4','')
        #     old_name = video_name[0]
        #     os.rename('E:\\HowTo\\2019-09-12-HowTo\\'+old_name, 'E:\\HowTo\\2019-09-12-HowTo\\'+new_name)
        
        # 讀取把Word文檔內容並替換爲txt文本文檔
        # video_official = re.compile('(.*?.docx)',re.S).findall(name)
        # video_name = re.compile('(.*?).mp4').findall(name)
        # if video_official:
        #     print('E:\\HowTo\\2019-09-12-HowTo\\'+video_official[0])
        # 
        #     file = docx.Document('E:\\HowTo\\2019-09-12-HowTo\\'+video_official[0])
        #     # 輸出每一段的內容
        #     for para in file.paragraphs:
        #         # print(para.text)
        #         with open('E:\\HowTo\\2019-09-12-HowTo\\'+video_name[0]+'.txt','w',encoding='utf-8') as f:
        #             f.write(para.text)
        #     os.remove('E:\\HowTo\\2019-09-12-HowTo\\'+video_official[0])


getImage()