gst latency-clock ( Gstreamer Latency Measurement)

latancy-clock.sh

# install and build
sudo apt-get install libgstreamer-plugins-base1.0-dev libgstreamer1.0-0 libgstreamer1.0-dev libgstreamer1.0-0 gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly gstreamer1.0-libav gstreamer1.0-doc gstreamer1.0-tools gstreamer1.0-x gstreamer1.0-alsa gstreamer1.0-gl gstreamer1.0-gtk3 gstreamer1.0-qt5 gstreamer1.0-pulseaudio -y
https://github.com/stb-tester/latency-clock.git
cd latency-clock
make all
export GST_PLUGIN_PATH=/usr/local/lib/
# shit
sudo mv libgsttimeoverlayparse.so /usr/local/lib/


## create and decode immediatly  ( only show timestamp)
GST_DEBUG=*:4  unbuffer ./client "videotestsrc is-live=true pattern=white ! video/x-raw,width=1280,height=720,framerate=50/1,format=RGB ! timestampoverlay ! queue ! videoconvert ! timeoverlayparse" | grep "Latency" | awk '{print $10}'

# CREATE CSV
echo "time latency" >  outputLatency.csv; GST_DEBUG=*:4  unbuffer ./client "videotestsrc is-live=true pattern=white ! video/x-raw,width=1280,height=720,framerate=50/1,format=RGB ! timestampoverlay ! queue ! videoconvert ! timeoverlayparse" | grep "Latency" | awk '{print $1,$10}' >> outputLatency.csv


# For gst noobs like myself x-raw can't be transmitted using udpsink, we need rtsp / h265 tests

## 
#output
#:00:00.000000105
#:00:00.000000105
#:00:00.000000104
#:00:00.000000104
#:00:00.000000103

# Show latency and average value
GST_DEBUG=*:4  unbuffer ./client "videotestsrc is-live=true pattern=white ! video/x-raw,width=1280,height=720,framerate=50/1,format=RGB ! timestampoverlay ! queue ! videoconvert ! timeoverlayparse" | grep "Latency" | awk '{print $10}' | awk -F : '{ if(NR>30)total += $3 count++; print "Latency(s) ", $3, "Average ", total/count }'