StreamTest.txt

gst-launch-1.0  videomixer name=mix sink_0::xpos=0   sink_0::ypos=0  sink_0::alpha=1  sink_0::zorder=0  sink_1::xpos=0   sink_1::ypos=0  sink_1::zorder=1     sink_2::xpos=640  sink_2::ypos=0  sink_2::zorder=1 videotestsrc pattern=\"black\" ! video/x-raw,format=I420,width=1280,height=720 !  mix.sink_0  ksvideosrc device-index=0 ! video/x-raw,format=I420,width=1280,height=720,framerate=30/1 ! videoconvert ! videoflip method=4 ! videoscale ! video/x-raw,format=I420,width=640,height=720 ! mix.sink_1 ksvideosrc device-index=1 ! video/x-raw,format=I420,width=1280,height=720,framerate=30/1 ! videoconvert ! videoflip method=4 ! videoscale ! video/x-raw,format=I420,width=640,height=720 ! mix.sink_2 mix. ! x264enc name=videoEncbitrate=2000 tune=zerolatency pass=qual ! rtph264pay ! udpsink host=127.0.0.1 port=7000 sync=false -v