How to get the latency from deepstream python apps

[skim1]

@Fiona.Chen

@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 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

[https://forums.developer.nvidia.com/t/deepstream-sdk-faq/80236/12?u=imsk](DeepStream SDK FAQ - #12 by bcao)

@Fiona.Chen
In this one a separate probe latency_measurement_buf_prob() is created.

What I am asking is can’t we get NVDS_LATENCY_MEASUREMENT_META from usermeta from gst_buffer in any of the probe function like other batchmeta, framemeta etc?
Without using nvds_measure_buffer_latency() api??

because NVDS_LATENCY_MEASUREMENT_META is already there in NvDsMetaType.