How to display a videostream in the PyQt GUI by a efficient way

[kivilaya]

Hello, everyone£¬ : )

I'm a beginner of pyqt, and recently I'm having a problem with it. I
hope someone could help me.

As required, I need to get a videostream from a camera, and process
every frame to add some information on it, and then display the frame
in a PyQt GUI.
But I don't know how to display the videostream in the PyQt GUI by a
efficient way.

Currently, I do these like this:
1. Get the videostream by the videocapture module (a useful module
written by Markus Gritsch) in the format of PIL images;
2. Process every PIL image and add the information;
3. Convert every PIL image to QPixmap and display it using
QLabel.setPixmap.
I think it is a very inefficient way, but I don't known how to display
the videostream in other ways, so I need your help, Thanks!

PS:I do it with Windows XP, Python 2.5.1, PyQt4.3.0