diff --git a/app/src/main/java/com/futo/platformplayer/downloads/VideoExport.kt b/app/src/main/java/com/futo/platformplayer/downloads/VideoExport.kt
index 37f1395f..81f0fb09 100644
--- a/app/src/main/java/com/futo/platformplayer/downloads/VideoExport.kt
+++ b/app/src/main/java/com/futo/platformplayer/downloads/VideoExport.kt
@@ -7,6 +7,7 @@ import androidx.documentfile.provider.DocumentFile
 import com.arthenica.ffmpegkit.*
 import com.futo.platformplayer.api.media.models.streams.sources.*
 import com.futo.platformplayer.constructs.Event1
+import com.futo.platformplayer.helpers.FileHelper.Companion.sanitizeFileName
 import com.futo.platformplayer.logging.Logger
 import com.futo.platformplayer.states.StateApp
 import com.futo.platformplayer.toHumanBitrate
@@ -63,7 +64,7 @@ class VideoExport {
         val outputFile: DocumentFile?;
         val downloadRoot = StateApp.instance.getExternalDownloadDirectory(context) ?: throw Exception("External download directory is not set");
         if (sourceCount > 1) {
-            val outputFileName = toSafeFileName(videoLocal.name) + ".mp4"// + VideoDownload.videoContainerToExtension(v.container);
+            val outputFileName = videoLocal.name.sanitizeFileName(true) + ".mp4"// + VideoDownload.videoContainerToExtension(v.container);
             val f = downloadRoot.createFile("video/mp4", outputFileName)
                 ?: throw Exception("Failed to create file in external directory.");
 
@@ -79,7 +80,7 @@ class VideoExport {
             }
             outputFile = f;
         } else if (v != null) {
-            val outputFileName = toSafeFileName(videoLocal.name) + "." + VideoDownload.videoContainerToExtension(v.container);
+            val outputFileName = videoLocal.name.sanitizeFileName(true) + "." + VideoDownload.videoContainerToExtension(v.container);
             val f = downloadRoot.createFile(v.container, outputFileName)
                 ?: throw Exception("Failed to create file in external directory.");
 
@@ -91,7 +92,7 @@ class VideoExport {
 
             outputFile = f;
         } else if (a != null) {
-            val outputFileName = toSafeFileName(videoLocal.name) + "." + VideoDownload.audioContainerToExtension(a.container);
+            val outputFileName = videoLocal.name.sanitizeFileName(true) + "." + VideoDownload.audioContainerToExtension(a.container);
             val f = downloadRoot.createFile(a.container, outputFileName)
                 ?: throw Exception("Failed to create file in external directory.");
 
@@ -110,11 +111,6 @@ class VideoExport {
         return@coroutineScope outputFile;
     }
 
-    private fun toSafeFileName(input: String): String {
-        val safeCharacters = ('a'..'z') + ('A'..'Z') + ('0'..'9') + listOf('-', '_')
-        return input.map { if (it in safeCharacters) it else '_' }.joinToString(separator = "")
-    }
-
     private suspend fun combine(inputPathAudio: String?, inputPathVideo: String?, inputPathSubtitles: String?, outputPath: String, duration: Double, onProgress: ((Double) -> Unit)? = null) = withContext(Dispatchers.IO) {
         suspendCancellableCoroutine { continuation ->
             //ffmpeg -i a.mp4 -i b.m4a -scodec mov_text -i c.vtt -map 0:v -map 1:a -map 2 -c:v copy -c:a copy -c:s mov_text output.mp4
diff --git a/app/src/main/java/com/futo/platformplayer/helpers/FileHelper.kt b/app/src/main/java/com/futo/platformplayer/helpers/FileHelper.kt
index 0f8565a2..ec5b493e 100644
--- a/app/src/main/java/com/futo/platformplayer/helpers/FileHelper.kt
+++ b/app/src/main/java/com/futo/platformplayer/helpers/FileHelper.kt
@@ -2,11 +2,17 @@ package com.futo.platformplayer.helpers
 
 class FileHelper {
     companion object {
-        val allowedCharacters = HashSet("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz-.".toCharArray().toList());
-
-
-        fun String.sanitizeFileName(): String {
-            return this.filter { allowedCharacters.contains(it) };
+        fun String.sanitizeFileName(allowSpace: Boolean = false): String {
+            return this.filter {
+                (it in '0' .. '9') ||
+                    (it in 'a'..'z') ||
+                    (it in 'A'..'Z') ||
+                    (it == '-' || it == '.' || it == '_' || (it == ' ' && allowSpace)) ||
+                    (it in '丁'..'龤') || //Chinese/Kanji
+                    (it in '\u3040'..'\u309f') || //Hiragana
+                    (it in '\u30A0'..'\u30ff') || //Katakana
+                    (it in '\u0600'..'\u06FF') //Arabic
+            }; //Chinese
         }
     }
 }
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