Hi,
There is hardware decoder in Jetson Nano. Please run both server and client on Jetson Nano and check if there is less delay.
[Server]
$ gst-launch-1.0 v4l2src device=/dev/video0 ! 'video/x-raw, format=(string)UYVY, width=(int)640, height=(int)480' ! nvvidconv ! 'video/x-raw(memory:NVMM), format=(string)I420' ! nvv4l2h264enc maxperf-enable=1 insert-sps-pps=1 ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=5000 sync=false
[Client]
$ gst-launch-1.0 udpsrc port=5000 ! 'application/x-rtp,encoding-name=H264,payload=96' ! rtph264depay ! h264parse ! nvv4l2decoder enable-max-performance=1 ! nvoverlaysink sync=false
A user has mentioned there is more delay in using tsdemux. FYR.
Udp h264 to nv3dsink latency optimization - #7 by davidz0yyl