Python 有没有办法在kivy中录制视频？

我正在Kivy中显示摄像头视频，但我找不到录制视频的方法，我尝试使用OpenCV Videowriter，但由于更新（Clock.schedule\u interval（self.update，1.0/33.0））它不断被覆盖，因此它保存的视频是一幅图像，是否有人有其他方法。

请查看以下代码，这些代码可能会满足您的需要。主代码取自以下链接：。我只适应了kivy框架（问题是kivy解决方案），并调整了

frame\u per\u second

，使其与查看和写入速度一致

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.clock import Clock
from kivy.graphics.texture import Texture
from kivy.properties import StringProperty, NumericProperty

import cv2
import os

# Standard Video Dimensions Sizes
STD_DIMENSIONS =  {
    "480p": (640, 480),
    "720p": (1280, 720),
    "1080p": (1920, 1080),
    "4k": (3840, 2160),
}

# Video Encoding, might require additional installs
# Types of Codes: http://www.fourcc.org/codecs.php
VIDEO_TYPE = {
    'avi': cv2.VideoWriter_fourcc(*'XVID'),
    #'mp4': cv2.VideoWriter_fourcc(*'H264'),
    'mp4': cv2.VideoWriter_fourcc(*'XVID'),
}

class KivyCamera(BoxLayout):
    filename = StringProperty('video.avi')
    frames_per_second = NumericProperty(30.0)
    video_resolution = StringProperty('720p')

    def __init__(self, **kwargs):
        super(KivyCamera, self).__init__(**kwargs)
        self.img1=Image()
        self.add_widget(self.img1)
        self.capture = cv2.VideoCapture(0)
        self.out = cv2.VideoWriter(self.filename, self.get_video_type(self.filename), self.frames_per_second, self.get_dims(self.capture, self.video_resolution))
        Clock.schedule_interval(self.update, 1 / self.frames_per_second)

    def update(self, *args):
        ret, frame = self.capture.read()
        self.out.write(frame)
        buf = cv2.flip(frame, 0).tostring()
        texture = Texture.create(size=(frame.shape[1], frame.shape[0]), colorfmt="bgr")
        texture.blit_buffer(buf, colorfmt="bgr", bufferfmt="ubyte")
        self.img1.texture = texture

    # Set resolution for the video capture
    # Function adapted from https://kirr.co/0l6qmh
    def change_resolution(self, cap, width, height):
        self.capture.set(3, width)
        self.capture.set(4, height)

    # grab resolution dimensions and set video capture to it.
    def get_dims(self, cap, video_resolution='1080p'):
        width, height = STD_DIMENSIONS["480p"]
        if self.video_resolution in STD_DIMENSIONS:
            width, height = STD_DIMENSIONS[self.video_resolution]
        ## change the current caputre device
        ## to the resulting resolution
        self.change_resolution(cap, width, height)
        return width, height

    def get_video_type(self, filename):
        filename, ext = os.path.splitext(filename)
        if ext in VIDEO_TYPE:
          return  VIDEO_TYPE[ext]
        return VIDEO_TYPE['avi']

class CamApp(App):
    def build(self):
        return KivyCamera()

if __name__ == '__main__':
    CamApp().run()