/**:
   ros__parameters:
      topic: "threed_image"
      mountpoint: "/threed_image"
      port: "8560"
      local_only: True
      default_pipeline: |
            ( appsrc name=imagesrc do-timestamp=true min-latency=0 max-latency=0 max-bytes=1000 is-live=true !
              videoconvert !
              videoscale !
              video/x-raw, framerate=30/1, width=1280, height=720 !
              x264enc tune=zerolatency bitrate=500 key-int-max=30 !
              video/x-h264, profile=baseline !
              rtph264pay name=pay0 pt=96 )