[BUG] Emgu on Raspberrypi error - global cap_v4l.cpp:1134 tryIoctl

[D3D-s]

Hello,

I have Raspberry 4B 64 bit. I followed all the instructions for installation and am trying to execute a simple code.
using (VideoCapture camera = new VideoCapture(0))
{
Mat image = new Mat();
bool status = camera.Read(image); //--error here

//or image = camera.QueryFrame();
if (!image.IsEmpty)
{
Console.WriteLine("super");
}
}
after few seconds of delay on this line
bool status = camera.Read(image);

I get the following error. Please help!!!

[ WARN:[email protected]] global cap_v4l.cpp:1134 tryIoctl VIDEOIO(V4L2:/dev/video0): select() timeout.
[ WARN:[email protected]] global cap_v4l.cpp:1134 tryIoctl VIDEOIO(V4L2:/dev/video0): select() timeout.

[emgucv]

It is a warning message and not an error. It says that Open CV tried to use V4L library to open camera, but none is available.

Are you using raspberry pi camera module? Just an FYI, Open CV do not have a video capture backend that is compatible with raspberry pi camera module. You won't be able to create a VideoCapture from Open CV using the RP camera module.

opencv/opencv#21653
opencv/opencv#25072