Run deepstream_preprocess_test ,the value of roi_user_meta_list is always none

Please provide complete information as applicable to your setup.

**• Hardware Platform (GPU)**3090
• DeepStream Version6.0
• TensorRT Version8.0.1
**• NVIDIA GPU Driver Version (valid for GPU only)**470.63
**• Issue Type( questions, new requirements, bugs)**question

What is your config for preprocess? What is your expectation?

Problem resolved,when i add probe to the sink pad of the pgie element,roi_user_meta_list is none, while probe added to src pad of pgie, i can get the meta. Is there a documents for me, where should i add the probe

Glad to know you fixed your issue. Can you check where add the meta data in the source code of nvinfer as it is open source plugin?

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