diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
index 78e053d..0324c2a 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
@@ -92,6 +92,12 @@ class MainActivity : AppCompatActivity() {
             viewModel.setSplitMode(MainViewModel.PAGE_MODE_NINE)
             Log.e(TAG, "+++ split style: 9")
         }
+
+        button4.setOnClickListener {
+            if (splitMode == MainViewModel.PAGE_MODE_SIXTEEN) return@setOnClickListener
+            viewModel.setSplitMode(MainViewModel.PAGE_MODE_SIXTEEN)
+            Log.e(TAG, "+++ split style: 9")
+        }
         //endregion
     }
 
diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainViewModel.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainViewModel.kt
index 76faf93..a498191 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainViewModel.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainViewModel.kt
@@ -142,5 +142,6 @@ class MainViewModel: ViewModel() {
         const val PAGE_MODE_ONE = 1
         const val PAGE_MODE_FOUR = 4
         const val PAGE_MODE_NINE = 9
+        const val PAGE_MODE_SIXTEEN = 16
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
index ac741b5..290c7fd 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
@@ -112,6 +112,10 @@ class SplitViewFragment : Fragment() {
 
                             // 調整間距
                             when (splitMode) {
+                                MainViewModel.PAGE_MODE_ONE -> {
+                                    width = (baseView.width / maxRow)
+                                    height = (baseView.height / maxCol)
+                                }
                                 MainViewModel.PAGE_MODE_FOUR -> {
                                     when (col) {
                                         0 -> bottomMargin = 2.dp
@@ -136,9 +140,25 @@ class SplitViewFragment : Fragment() {
                                     width = (baseView.width / maxRow) - maxRow.dp
                                     height = (baseView.height / maxCol) - maxCol.dp
                                 }
-                                MainViewModel.PAGE_MODE_ONE -> {
-                                    width = (baseView.width / maxRow)
-                                    height = (baseView.height / maxCol)
+                                MainViewModel.PAGE_MODE_SIXTEEN -> {
+                                    if (col == 1) {
+                                        topMargin = 4.dp
+                                        bottomMargin = 2.dp
+                                    }
+                                    if (col == 2) {
+                                        topMargin = 2.dp
+                                        bottomMargin = 4.dp
+                                    }
+                                    if (row == 1) {
+                                        marginStart = 4.dp
+                                        marginEnd = 2.dp
+                                    }
+                                    if (row == 2) {
+                                        marginStart = 2.dp
+                                        marginEnd = 4.dp
+                                    }
+                                    width = (baseView.width / maxRow) - maxRow.dp
+                                    height = (baseView.height / maxCol) - maxCol.dp
                                 }
                             }
                         }
@@ -154,17 +174,11 @@ class SplitViewFragment : Fragment() {
                         videoViews[position].setOnClickListener {
                             if (position >= data.size) return@setOnClickListener
                             if (!videoViews[position].isPlaying) {
-                                if (!videoViews[position].isLoading) {
-                                    videoViews[position].resetRetryCount()
-                                    videoViews[position].play()
-                                }
                                 return@setOnClickListener
                             }
                             MainScope().launch {
                                 stopAll()
-                                //delay(Constants.CONF_DELAY_BASE_MILLIS)
                                 delay(splitMode * Constants.CONF_DELAY_BASE_MILLIS)
-                                //delay((splitMode * 100) + Constants.CONF_DELAY_BASE_MILLIS)
                                 val item = data[position]
                                 val bundle = Bundle().apply {
                                     //putInt(MonitoringActivity.BUNDLE_DEVICE_ID, item.id)
@@ -187,7 +201,9 @@ class SplitViewFragment : Fragment() {
     private fun setAllUrl() {
         for (index in data.indices) {
             videoViews[index].setData(data[index])
-            videoViews[index].setTextVisible((splitMode != MainViewModel.PAGE_MODE_NINE))
+            videoViews[index].setTextVisible(
+                (splitMode != MainViewModel.PAGE_MODE_NINE && splitMode != MainViewModel.PAGE_MODE_SIXTEEN)
+            )
         }
     }
 
diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt
index a6cf023..40f30f7 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt
@@ -84,6 +84,12 @@ class VideoView : ConstraintLayout, GstCallback {
         view.textDeviceName.isVisible = false
         isPlaying = false
         isLoading = false
+
+        view.btnRetry.setOnClickListener {
+            it.isVisible = false
+            resetRetryCount()
+            play()
+        }
     }
 
     fun setData(device: Device?, streamType: Int = SUB_STREAM) {
@@ -181,8 +187,10 @@ class VideoView : ConstraintLayout, GstCallback {
                         mHandler.post(retryRunnable)
                         retryCount++
                         isLoading = true
+                        view.btnRetry.isVisible = false
                     } else {
                         stopRetryCount()
+                        view.btnRetry.isVisible = true
                         isLoading = false
                         Log.e("${TAG}_$tag", "Retry count = 5, stopped retry...")
                     }