[英]MJPEG stream fails to open in OpenCV 2.4
I am having an issue getting OpenCV 2.4 to capture from an MJPEG stream from a Raspberry Pi, I have checked the stream URL in a browser and it seems to be working fine, however when I try to open it in OpenCV it seems to hang when I attempt to open it (I get neither the error or success messages on the terminal). 我在从Raspberry Pi的MJPEG流中捕获OpenCV 2.4时遇到问题,我已经在浏览器中检查了流URL,它似乎工作正常,但是当我尝试在OpenCV中打开它时,它似乎挂起了我尝试将其打开(终端上未显示错误或成功消息)。
cv::VideoCapture vcap;
cv::Mat raw_image;
const string videoStreamAddress = "http://192.168.0.28:8080/?action=stream";
if(!vcap.open(videoStreamAddress))
{
cout<<"Error opening video stream"<<endl;
return -1;
}
cout<<"Stream opened"<<endl;
I am using MJPEG-Streamer to provide the stream. 我正在使用MJPEG-Streamer提供流。 The same code works fine when capturing form a RTSP video stream.
从RTSP视频流捕获时,相同的代码可以正常工作。
EDIT: I tried changing the JPEG quality and resolution of the images captured by raspistill
on the Pi and I now get the message saying the stream failed to open. 编辑:我试图更改
raspistill
在Pi上捕获的图像的JPEG质量和分辨率,现在我收到一条消息,指出流无法打开。
尝试添加一个虚拟参数,以提示mjpeg内容:
const string videoStreamAddress = "http://192.168.0.28:8080/?action=stream&type=mjpg";
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