How to use multi cameras in VisionWorks sample nvgstcamera_capture?

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
1

Thanks in advanced. I use xavier and 3 leopard imx274 cameras are used. This sample can read J1 camera normally. This sample includes codes:

......
    std::string resolution = "1280x720", input = "device:///nvcamera";
......

    //
    // Create a Frame Source
    //

    std::unique_ptr<ovxio::FrameSource> source(ovxio::createDefaultFrameSource(context, input));
......

Obviously, ‘input’ decides which camera will be used, would anyone can tell me how to decide which camera by this variable?

2

Hi,

You can control the input source with the index parameter:

input = "device:///nvcamera?index=0"

Thanks.

3

On xavier, it’s not work, it always open the 1st camera regardless index.

4

Hi,

This config is for nvcamera, which is mounted on the dev board directly.
Please use the v4l2 interface if you are using a USB camera.

device:///v4l2?index=0

Thanks.