display video resolution at videos

app/src/main/kotlin/com/simplemobiletools/filemanager/dialogs/PropertiesDialog.kt

@@ -52,6 +52,10 @@ class PropertiesDialog : DialogFragment() {
                 properties_duration_label.visibility = View.VISIBLE
                 properties_duration.visibility = View.VISIBLE
                 properties_duration.text = mItem.getDuration(context)
+
+                properties_resolution_label.visibility = View.VISIBLE
+                properties_resolution.visibility = View.VISIBLE
+                properties_resolution.text = mItem.getVideoResolution(context)
             }
 
             val file = File(mItem.path)

library/src/main/kotlin/com/simplemobiletools/filepicker/models/FileDirItem.kt

@@ -59,6 +59,19 @@ class FileDirItem(val path: String, val name: String, val isDirectory: Boolean,
         return getFormattedDuration((timeInMillisec / 1000).toInt())
     }
 
+    fun getVideoResolution(context: Context): String {
+        try {
+            val retriever = MediaMetadataRetriever()
+            retriever.setDataSource(context, Uri.fromFile(File(path)))
+            val width = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH)
+            val height = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT)
+            return "$width x $height"
+        } catch (ignored: Exception) {
+
+        }
+        return ""
+    }
+
     val imageResolution: String
         get () {
             val bitmap: Bitmap? = BitmapFactory.decodeFile(path)