Hi,
Please check this post:
[Gstreamer] nvvidconv, BGR as INPUT - #2 by DaneLLL
Due to the constraint we suggest use DeepStream SDK. For using OpenCV, handling/processing BGR data requires significant CPU usage and performance may be capped by CPU capability.
For trying DeepStream SDK, you may start with deepstream-app:
/opt/nvidia/deepstream/deepstream-5.1/samples/configs/deepstream-app$ deepstream-app -c source8_1080p_dec_infer-resnet_tracker_tiled_display_fp16_nano.txt