cnstream/source/cns_launcher/configs/decode_config.json

{
  "source" : {
    "class_name" : "cnstream::DataSource",
    "custom_params" : {
      "reuse_cndec_buf" : "true",
      "output_type" : "mlu",
      "decoder_type" : "mlu",
      "output_buf_number" : 20,
      //"interval": 0,
      "device_id" : 0
    }
  }
}