(Sorry I’ve edited my question so many times. )
I tried search, but couldn’t find much help. I have a UDP stream running as follows:
gst-launch-1.0 v4l2src device=/dev/video0 io-mode=2 ! 'image/jpeg,width=1280,height=720,framerate=60/1' ! videorate ! 'image/jpeg,framerate=12/1' ! nvjpegdec ! 'video/x-raw' ! nvvidconv ! 'video/x-raw(memory:NVMM),width=640,height=480' ! nvv4l2h264enc maxperf-enable=1 control-rate=0 bitrate=400000 insert-sps-pps=true iframeinterval=10 ! h264parse ! rtph264pay pt=96 ! udpsink host=xx.xx.xx.xx port=8001 sync=false -e
I think the problem now is, is there anyway that by giving a signal, we can draw something/shape on gstreamer stream? like receiving the signal to draw, draw the shape, without signal, stream the raw frames…
Any suggestion would be appreciated!