[image] Latency measurement (nvds_measure_buffer_latency) gave weird results DeepStream SDK 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 Can this…

[image] skim1: Is there some sample reference to start with writing bindings from deepstream C api to python api? I think I have shared the sample. deepstream_python_apps/bindings at master · NVIDIA-AI-IOT/deepstream_python_apps (github.com) [image] skim1: What I am asking is can’t we ge…

You may need to generate python binding for nvds_measure_buffer_latency() first according to the instruction deepstream_python_apps/bindings at master · NVIDIA-AI-IOT/deepstream_python_apps · GitHub And then you can use this API to enable latency function as DeepStream SDK FAQ - #12 by bcao

[image] Fiona.Chen: nvds_measure_buffer_latency() And what about : [Link] ( NvDsMetaType — Deepstream Python ##DeepStream_VERSION## documentation ) [image] How we can access NVDS_LATENCY_MEASUREMENT_META : metadata type to be set for latency measurement ?

The enviroment setting and a probe function with getting user meta of NVDS_LATENCY_MEASUREMENT_META type are still needed.

[image] Fiona.Chen: The enviroment setting and a probe function with getting user meta of NVDS_LATENCY_MEASUREMENT_META type are still needed. Sorry I couldn’t get this… in this case we don’t need to write the python bindings for nvds_measure_buffer_latency() api? we can get the latency inf…

[image] skim1: we can get the latency info in the probe by accessing NVDS_LATENCY_MEASUREMENT_META? Because it’s part of NvDsMeta, so in the PGIE probe can we get this info in l_frame? Yes. You can access NVDS_LATENCY_MEASUREMENT_META type user meta to get latency info if you don’t want to u…

You can access NVDS_LATENCY_MEASUREMENT_META type user meta to get latency info if you don’t want to use nvds_measure_buffer_latency() API. num_sources_in_batch = nvds_measure_buffer_latency(buf, latency_info); again this can’t be replicated to python right?

[image] skim1: num_sources_in_batch = nvds_measure_buffer_latency(buf, latency_info); again this can’t be replicated to python right? No, there is no binding for it now.

Is there some sample reference to start with writing bindings from deepstream C api to python api?

[image] Fiona.Chen: [image] skim1: we can get the latency info in the probe by accessing NVDS_LATENCY_MEASUREMENT_META? Because it’s part of NvDsMeta, so in the PGIE probe can we get this info in l_frame? Yes. You can access NVDS_LATENCY_MEASUREMENT_META type user meta to get latency inf…

I saw below mentioned code in /deepstream-5.1/sources/apps/sample_apps/deepstream-nvdsanalytics-test/deepstream_app_main.c. Here I haven’t seen nvds_measure_buffer_latency() API called anywhere. NvDsFrameLatencyInfo *latency_info = NULL; NvDsDisplayMeta *display_meta = nvds_acquire_display_me…

How to get the latency from deepstream python apps

Accelerated Computing Intelligent Video Analytics DeepStream SDK

Fiona.Chen December 7, 2021, 10:17am 8

Yes. You can access NVDS_LATENCY_MEASUREMENT_META type user meta to get latency info if you don’t want to use nvds_measure_buffer_latency() API. The proper place of the probe function has been shown in DeepStream SDK FAQ - Intelligent Video Analytics / DeepStream SDK - NVIDIA Developer Forums

Topic		Replies	Views
How to access Deepstream latency informations in python DeepStream SDK python	11	971	March 10, 2025
How to measure latency in deepstream python app? DeepStream SDK	4	969	February 23, 2023
Latency measurement approaches DeepStream SDK	4	1250	January 26, 2024
Latency measurement in python deepstream implementation Computer Vision & Image Processing	1	563	May 24, 2022
Deepstream Component latency DeepStream SDK	2	330	July 4, 2023
Regarding the frame delay measurement method DeepStream SDK python , deepstream	5	288	July 10, 2024
Sample app to measure component latency of the pipeline DeepStream SDK	3	965	October 13, 2020
Latency with python test3 DeepStream SDK	11	1758	April 27, 2021
Latency measurement in Deepstream pipeline DeepStream SDK deepstream	9	336	February 14, 2025
Latency measurement (nvds_measure_buffer_latency) gave weird results DeepStream SDK	1	1576	December 14, 2020

How to get the latency from deepstream python apps

Related topics