Difficulty Saving Inference Results or Metadata to a File in Graph Composer

Accelerated Computing Intelligent Video Analytics DeepStream SDK
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Environment Details:
• Hardware Platform (Jetson / GPU): dGPU (x86_64)
• DeepStream Version: 7.1
• JetPack Version (valid for Jetson only): N/A
• TensorRT Version: 10.3.0.26
• NVIDIA GPU Driver Version: 560.35.05
• Issue Type: Question

Hello, I am working with DeepStream 7.1 on an x86_64 platform and Graph Composer 4.1.0. I have implemented a simple pipeline, which runs as expected, but I’ve encountered a roadblock when it comes to handling inference metadata.

Issue Details:

  • I want to save the inference results (e.g., object classifications, bounding boxes) to a file in JSON or text format.
  • So far, I haven’t found a way to extract or log this metadata from the pipeline in Graph Composer.

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Questions:

  • Is there a built-in node or mechanism in Graph Composer to extract and save inference metadata?
  • How can I configure the pipeline to output these results to a file (e.g., JSON or txt)?
  • If direct logging isn’t possible, are there any alternative approaches, such as adding a custom node or modifying configurations?

I would greatly appreciate any guidance, examples, or pointers to relevant documentation that could help resolve this issue.

Thank you for your assistance!

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Currently there is no extension to dump the bboxes and classes labels directly into files.

The alternative method could be sending the information to the cloud server through [NvDsCloudMsgExt] (NvDsCloudMsgExt — DeepStream documentation), then you can save the data into any format.

There is sample /opt/nvidia/deepstream/deepstream/reference_graphs/deepstream-test4 for sending msg to cloud.

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Thank you! I can now visualize the metadata. Is there a way to format the messages being sent?

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Currently it is hard to do so with Graph Composer. An possible way is to customize the Gst-nvmsgconv — DeepStream documentation

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The last question is duplicated with Issue Retrieving BodyPose3DNet Metadata in Graph Composer. Close this topic.

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