GStreamer-WARNING **: 04:27:24.058: Invalid caps feature name: Segmentation fault (core dumped) c++

h9945394143 · August 13, 2021, 4:31am

Description

i get the below warning and segmentation fault error .

Starting pipeline 
gstnvtracker: Loading low-level lib at /opt/nvidia/deepstream/deepstream/lib/libnvds_mot_klt.so
gstnvtracker: Optional NvMOT_ProcessPast not implemented
gstnvtracker: Optional NvMOT_RemoveStreams not implemented
gstnvtracker: Batch processing is OFF
gstnvtracker: Past frame output is OFF
0:00:02.462125195 24972 0x564a37bd5cf0 INFO                 nvinfer gstnvinfer.cpp:619:gst_nvinfer_logger:<primary-inference> NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::deserializeEngineAndBackend() <nvdsinfer_context_impl.cpp:1702> [UID = 1]: deserialized trt engine from :/home/ubuntu/PoC/model/Primary_Bottle_SSD/ssd_resnet18_retrained_epoch_040_bo_99_bl_94_rej_84.etlt_b1_gpu0_fp32.engine
INFO: ../nvdsinfer/nvdsinfer_model_builder.cpp:685 [Implicit Engine Info]: layers num: 3
0   INPUT  kFLOAT Input           3x300x300       
1   OUTPUT kFLOAT NMS             1x200x7         
2   OUTPUT kFLOAT NMS_1           1x1x1           

0:00:02.462222944 24972 0x564a37bd5cf0 INFO                 nvinfer gstnvinfer.cpp:619:gst_nvinfer_logger:<primary-inference> NvDsInferContext[UID 1]: Info from NvDsInferContextImpl::generateBackendContext() <nvdsinfer_context_impl.cpp:1806> [UID = 1]: Use deserialized engine model: /home/ubuntu/PoC/model/Primary_Bottle_SSD/ssd_resnet18_retrained_epoch_040_bo_99_bl_94_rej_84.etlt_b1_gpu0_fp32.engine
0:00:02.465999631 24972 0x564a37bd5cf0 INFO                 nvinfer gstnvinfer_impl.cpp:313:notifyLoadModelStatus:<primary-inference> [UID 1]: Load new model:PoC_pgie_config.txt sucessfully

Decodebin child added: source

Decodebin child added: decodebin0
Running...

Decodebin child added: qtdemux0

Decodebin child added: multiqueue0

Decodebin child added: h264parse0

Decodebin child added: capsfilter0

Decodebin child added: aacparse0

Decodebin child added: avdec_aac0

Decodebin child added: nvv4l2decoder0

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: 

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: @\xbaE5JV

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: \u0002

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: `\xd9D5JV

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: \u0014

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: \xa0=2PO\u007f

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: @\xbaE5JV

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: 

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: `4n5JV

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.057: Invalid caps feature name: `

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.058: Invalid caps feature name: `\xd9D5JV

(deepstream-Bottle-app:24972): GStreamer-WARNING **: 04:27:24.058: Invalid caps feature name: 
Segmentation fault (core dumped)

Environment

TensorRT Version:
GPU Type:
Nvidia Driver Version:
CUDA Version:
CUDNN Version:
Operating System + Version:
Python Version (if applicable):
TensorFlow Version (if applicable):
PyTorch Version (if applicable):
Baremetal or Container (if container which image + tag):

Relevant Files

Please attach or include links to any models, data, files, or scripts necessary to reproduce your issue. (Github repo, Google Drive, Dropbox, etc.)

Steps To Reproduce

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NVES · August 13, 2021, 4:37am

Hi,
We recommend you to raise this query in TLT forum for better assistance.

Thanks!

Fiona.Chen · August 13, 2021, 4:53am

If you are using deepstream, please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU)
• DeepStream Version
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

h9945394143 · August 13, 2021, 5:22am

Hardware Platform (Jetson / GPU) ==> GPU , Tesla T4
• DeepStream Version => 1.0
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)

Fiona.Chen · August 13, 2021, 5:43am

What deepstream code are you running? Are you running the samples? Can you provide the code?

h9945394143 · August 13, 2021, 5:47am

its a custom biggercode . , Is it the issue with capsfilter ?? below is the short code

data.caps = gst_element_factory_make("capsfilter", caps_c);

    caps = gst_caps_from_string("video/x-raw(memory:NVMM), format=I420");
    g_object_set(G_OBJECT(data.caps), "caps", caps, NULL);

and the linking is

gst_element_link(data.queue, data.nvvidconv_pre);

    gst_element_link(data.nvvidconv_pre, data.nvosd);

    gst_element_link(data.nvosd, data.nvvidconv);

    gst_element_link(data.nvvidconv, data.caps);

    gst_element_link(data.caps, data.encoder);

    gst_element_link(data.encoder, data.rtppay);

        gst_element_link(data.rtppay, data.sink);

Fiona.Chen · August 13, 2021, 5:56am

I can’t identify anything with this piece of code.

h9945394143 · August 16, 2021, 2:43am

Its not sample code , its an custom code , trying to save inference as an h264 Video file

Fiona.Chen · August 16, 2021, 2:46am

Please provide a simple sample code which can reproduce the problem. And please provide the detailed steps of reproducing too.

h9945394143 · August 16, 2021, 2:48am

void cb_newpad(GstElement* decodebin, GstPad* decoder_src_pad, gpointer data)

{

    GstCaps* caps;

    GstStructure* gststruct;

    GstPad* bin_ghost_pad;

    GQuark gstname;

    GstCapsFeatures* features, * nvmmMemoryType;

    nvmmMemoryType = gst_caps_features_new("memory:NVMM");

    GstElement* source_bin = GST_ELEMENT(data);

    caps = gst_pad_get_current_caps(decoder_src_pad);

    gststruct = gst_caps_get_structure(caps, 0);

    features = gst_caps_get_features(caps, 0);

    gstname = gststruct->name;  /*gststruct.get_name();*/

    /*# Need to check if the pad created by the decodebin is for video and not

        # audio.*/

    g_print("gstname=%s\n", gstname);

    if (g_strrstr(gst_structure_get_name(gststruct), "video"))

        //if((gstname.find("video") != -1) 

    {

        /*# Link the decodebin pad only if decodebin has picked nvidia

            # decoder plugin nvdec_* .We do this by checking if the pad caps contain

            # NVMM memory features.*/

        g_print("features=", features);

        if (gst_caps_features_is_equal(features, nvmmMemoryType))

        {

            //# Get the source bin ghost pad

            bin_ghost_pad = gst_element_get_static_pad(source_bin, "src");

            if (gst_ghost_pad_set_target(GST_GHOST_PAD(bin_ghost_pad), decoder_src_pad))

            {

                g_printerr("Failed to link decoder src pad to source bin ghost pad\n");

            }

        }

        else

        {

            g_printerr("Error: Decodebin did not pick nvidia decoder plugin \n");

        }

    }

}

Fiona.Chen · August 16, 2021, 2:59am

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

This piece of code can not run. Please provide complete code and make sure the code can run.