Python OpenCV:Python 2.7与Python 3.5之间的VideoCapture差异 [英] Python OpenCV : VideoCapture differences between Python 2.7 to Python 3.5

问题描述

我通过ssh连接到远程系统，并尝试使用Python中的OpenCV VideoCapture读取帧.使用Python 2.7时，相同的代码成功；使用Python 3.5时，相同的代码失败:

I'm connected to remote system through ssh, and trying to read frames using OpenCV VideoCapture in Python. The same code succeeds when using Python 2.7 and fails when using Python 3.5:

import cv2
cap = cv2.VideoCapture(0)

Python2.7:

Python2.7:

print cap.isOpened() # prints True, further read() calls also return True

Python3.5:

Python3.5:

print (cap.isOpened()) # prints False, and so are cap.open(), and of course cap.read().

什么可能导致这种行为?

What could cause such behavior?

谢谢！

推荐答案

我遇到了完全相同的问题. OpenCV是从源代码安装的. Python 2和3环境之间的区别在于，对于Python 3，通过pip3 另外安装了opencv-python. A

I had exactly the same problem. OpenCV was installed from the sources. The difference between Python 2 and 3 environment was, that for Python 3 opencv-python was additionally installed via pip3. A

pip3 uninstall opencv-python

解决了我的情况.

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