Deepstream back-to-back detector

• Hardware Platform (Jetson / GPU) T4 (dGPU)
• DeepStream Version
• NVIDIA GPU Driver Version 470.63.01

We have connected back to back detectors with nvinfer plugin. Both pgie and sgie has flags output-tensor-meta=1 and distinct gie-unique-id values. It seems they work with network-type=0 (Object detector) with a shared library of post-processing attached to them.

We want to do post-processing part in python probe after pgie and sgie. Hence we have set network-type=100. This will let us do the post-processing in python probe attached.


  1. link pgie plugin with a python probe attached. It does post-processing.
  2. fill NvDsObjectMeta buffer inside probe,

The above steps gives correct output, but now

  1. link SGIE plugin, with a python probe in the pipeline with network-type=100. It seems the sgie is not doing any inference.

The issue only persist if we have

network-type=100 → To use python post-prcoessing code.

It is working fine if we have:

network-type=0 → To use shared library c++ post-processing.

Could you please help us what we can do to solve this?

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.

which app are you testing? did you do any code modification? what is you media pipeline?

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