Gstd-30-min-server Example

[barisduzenli]

Hello Everyone,

I am planning to realize a multi camera AI application. I have Jetson Nano with two CSI camera and one webcam wired. I am starting gstd -D and trying ./00_create_camera.sh command.

I am getting; @client side

======================== Creating camera pipeline

{ "code" : 6, "description" : "Resource requested doesn't exist", "response" : null } { "code" : 2, "description" : "Bad pipeline description", "response" : null }

And @server side [[A0:00:35.834408280 4941 0x55957e2b65e0 ERROR gstdlist gstd_list.c:278:gstd_list_delete:GstdList@0x55957e11bd80 The resource "camera" doesn't exists in "pipelines" 0:00:35.867470122 4941 0x55957e2b65e0 ERROR gstdpipeline gstd_pipeline.c:511:gstd_pipeline_create:GstdPipeline@0x7f57f010b000 Unable to create pipeline: no element "nvcamerasrc" 0:00:35.867501545 4941 0x55957e2b65e0 ERROR gstdlist gstd_list.c:233:gstd_list_create:GstdList@0x55957e11bd80 Could not create the resource "camera" on "pipelines"

Why? And How can I fix? Thank you.

[emmadrigal]

Hi Baris,

Is the 00_create_camera.sh a script you wrote? I can't find it on the latest develop version.

You will probably need to make a couple of changes to the pipeline. For the CSI cameras you'll want to use nvarguscamerasrc instead of nvcamerasrc. For your webcam you'll want to use v4l2src device=/dev/video$WEBCAM_NUMBER instead of nvcamerasrc.

Also depending on the pipeline you'll want to use nvvidconv to go from cuda memory (such as the one provided by nvarguscamerasrc) to cpu memory and back. Take note that NVIDIA's GPU accelerated device will require cuda memory.

[barisduzenli]

No I did not write the script. I tried as its default. After I changed nvcamerasrc by nvarguscamerasrc, the error is changed. I achieved to create a pipeline and delete also. Thank you. I am following the link below to create pipelines (Camera Capture with GStreamer-1.0 under Accelerated Gstreamer ) https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Faccelerated_gstreamer.html%23wwpID0E0ZQ0HA

Still I have errors like Missing argument for -e ? I do not know about. Is there a document or tutorial series for beginners like me?

[rrcarlosrodriguez]

Hi @barisduzenli ,

Yes, we do have a great wiki page with tons of information and examples from basic to advanced, you can take a look here: https://developer.ridgerun.com/wiki/index.php?title=GStreamer_Daemon