Extracting user_meta_list return Capsule None

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) . Jetson Nano
• DeepStream Version 6.0.1
• JetPack Version (valid for Jetson only) 4.6.3
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only) . CUDA: 10.2.300
• Issue Type( questions)

I build FaceRecognition pipeline using the FacedetectIR model, and I’m trying to access the output tensors of the model, but it returns None, here is the code

the output-tensor-meta=1 in the config file.

can model work fine by third party tool? please refer to sgie_pad_buffer_probe of deepstream_infer_tensor_meta_test.cpp in deepstream SDK, this sample will parse NvDsInferTensorMeta.

Ok, I’m going to check, but I’m interested in Python more than C++, so Is there a clear way or tutorial about dealing with python. Actually i barely find solutions for what i’m facing with Deepstream. @fanzh

sorry for the late reply, there is no ready python sample in deepstream_python_apps, as you know, Deepstream SDK is a C lib, python use python binding to access Deepstream SDK.
you can port this code:
info->buffer = meta->out_buf_ptrs_host[i];
if (use_device_mem && meta->out_buf_ptrs_dev[i]) {
cudaMemcpy (meta->out_buf_ptrs_host[i], meta->out_buf_ptrs_dev[i],
info->inferDims.numElements * 4, cudaMemcpyDeviceToHost);

I think that there is an example here in deepstream_ssd_parser, at line 268, i just followed that example but can’t get back the tensor as mentioned above.
Should i develop my solution in C++ in that case, or there is any clear way for doing that in Python? and i have to do that in C++, is there any clear documentation about how to create the plugins?

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

In your python code above, it seemed there is no “info->buffer = meta->out_buf_ptrs_host[i];” logic.
please refer to doc1 ,doc2 and deepstream_infer_tensor_meta_test.cpp.

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