Javascript 不需要时，在参数末尾添加enoint

当尝试使用以下命令时

  var inRes = screen.width + "x" + screen.height;
  var outRes = screen.width + "x" + screen.height;
  var fps = 30;
  var gop = 60;
  var gopMin = 30;
  var threads = 2;
  var cBitRate = "1000k";
  var qual = "ultrafast";
  var audRate = 44100;
  var streamKey = "StreamKeyGoesHere";
  var server = "ServerNameHere";
  var recordingOptions = "-video_size" + " " + inRes + " " + "-framerate" + " " + fps + " " + "-f" + " " + "x11grab" + " " + "-i" + " " + ":0.0";

  const recCom = spawn("ffplay " + recordingOptions);


  recCom.stdout.on("data", data => {
      console.log(`stdout: ${data}`);
  });

  recCom.stderr.on("data", data => {
      console.log(`stderr: ${data}`);
  });

  recCom.on('error', (error) => {
      console.log(`error: ${error.message}`);
  });

  recCom.on("close", code => {
      console.log(`child process exited with code ${code}`);
  });

我得到以下错误：

main.js:73 error: spawn ffplay -video_size 1366x768 -framerate 30 -f x11grab -i :0.0 ENOENT

我可以在shell中正常运行该命令，没有问题。但当电子试图运行它时，它会无缘无故地在末尾加上“enoint”

有没有办法从末尾删除eNont

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提前谢谢。

忘了说所有这些都包含在HTML中由按钮调用的函数中。