我如何使用Kivy(Python)相机 [英] How I can use Kivy (Python) camera

问题描述

我尝试使用uix.camera小部件，并从网络摄像头中显示一些Wideo. 我查看了文档，并尝试使用此简单代码.但这只是给我看一个白色的屏幕，没有任何视频(我已启用播放功能). 我做错了什么? 也许存在一些有用的文档\教程(因为从很多官方文档中我了解得很少).感谢您的帮助.

I try to use uix.camera widget and show some wideo from my web-camera. I looked into the documentation and try to use this simply code. But it's just show me a white creen withoud any video (I enabled playing). What I'm doing wrong? Maybe some useful docs\tutorial exist (because from official documentation I understanding a little from many). Thanks for any help.

import kivy
kivy.require('1.9.1')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.camera import Camera

class MainApp(App):
    def build(self):
        return Camera(play=True)

if __name__== "__main__":
    MainApp().run()

推荐答案

您需要指定分辨率.就我而言，我还需要指定index = 1，这是计算机上插入的第二个摄像头.

You need to specify resolution. In my case, I also needed to specify index=1, that is the second camera plugged in my computer.

示例:

import kivy
kivy.require('1.9.1')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.camera import Camera

class MainApp(App):
    def build(self):
        return Camera(play=True, index=1, resolution=(640,480))

if __name__== "__main__":
    MainApp().run()

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