用Qt显示WebCam视频 [英] Displaying WebCam video with Qt

问题描述

我正在Linux Gnome(Ubuntu 9.04)上使用Qt 4.5(2009.03)，并且想在Qt应用程序的Phonon :: VideoWidget中显示由网络摄像头捕获的视频.

I'm using Qt 4.5 (2009.03) on Linux Gnome (Ubuntu 9.04) and would like to display video captured by my webcam in a Phonon::VideoWidget of my Qt application.

我有一个使用v4l2 API的第一个实现，其中我进行了YUV2到RGB的转换，并自己填写了QImage.它运作良好，但效率不是很高.一位同事使用gStreamer来完成相同的操作，而且速度要快得多.

I have a first implementation using the v4l2 API where I do the YUV2 to RGB conversion and fill a QImage my self. It works well but it is not very efficient. A collegue used gStreamer to do the same thing and it was much much faster.

从那时起，我发现了声子，并想使用它.除了绑定到网络摄像头设备作为源外，其他所有内容都已配置和设置.

Since then I found out about phonon and would like to use it. Everything is configured and set up except for the binding to the webcam device as source.

我应该创建一个MediaSource对象，但是我不知道如何配置它.任何帮助都是非常有价值的.

I should create a MediaSource object but I don't know how to configure it. Any help would be greatly valuable.

Phonon概述解释说它不受支持然而.但是我需要一个解决方案.

The Phonon overview explains that it is not supported yet. But I need a solution.

推荐答案

对于这个问题，我知道来得太晚了.但我一直在寻找相同的东西，找不到纯的qt解决方案. 我发现 http://qt-apps.org /content/show.php/Qt+Opencv+webcam+viewer?content=89995 这取决于opencv，我不知道，我也不想学习.

I know its little bit late for this question. but I was looking for the same thing and could not find pure qt solution. I found http://qt-apps.org/content/show.php/Qt+Opencv+webcam+viewer?content=89995 this depends opencv which I dont know and I dont want to learn.

这是我的解决方案 http://qt-apps.org /content/show.php/V4lCapture?content=126541

一件事，它的线程需要再抛光一点，但是它仍然可以工作.

one thing its thread needs to be polished a little more but it works anyway.

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