cnstream/source/cns_launcher/configs/sinker_configs/display.json

{
  "displayer" : {
    "class_name" : "cnstream::Displayer",
    "parallelism" : 1,
    "max_input_queue_size" : 20,
    "custom_params" : {
      "window-width": 1280,
      "window-height": 720,
      "refresh-rate" : 25,
      "max-channels" : 32,
      "show" : true,
      "full-screen" : false
    }
  }
}