close app 5s later after closing pipe ,to let the ffmpeg flush mp4 moov

@@ -23,9 +23,15 @@ ipc.on('close-main-window', function () {
 var lastRenderTime = 0;
 
 ipc.on('to-main-timer', function () {
-   if(Date.now() - lastRenderTime >= 10000){
+  if (Date.now() - lastRenderTime >= 10000) {
+    if (streamIn) {
+      streamIn.end();
+      streamIn = null;
+    }
+    if (Date.now() - lastRenderTime >= 15000) {
       quit();
-   }
+    }
+  }
 });
 
 var subarg = require('subarg');
@@ -113,7 +119,9 @@ win.webContents.executeJavaScript('const ipcToMain = require("electron").ipcRend
         streamIn = null;
       }
       console.log("done")
-      win.webContents.executeJavaScript('require("electron").ipcRenderer.send("close-main-window")');
+      if(elapsed > duration + 5000){//delay 5s after closing pipe ,then close
+         win.webContents.executeJavaScript('require("electron").ipcRenderer.send("close-main-window")');
+      }
     }
     else {
       streamIn.write(image.getBitmap());