diff --git a/appinfo/info.xml b/appinfo/info.xml
index efac726..aa7fdee 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -5,7 +5,7 @@
     <summary>Aria2 and youtube-dl web gui for nextcloud</summary>
     <description>built-in torrent search;Start and stop Aria2 process, manage Aria2 from the web;
 Download videos from youtube, twitter and other sites;</description>
-    <version>0.0.3</version>
+    <version>0.0.4</version>
     <licence>agpl</licence>
     <author mail="freefallbenson@gmail.com" homepage="https://github.com/shiningw">jiaxinhuang</author>
     <namespace>NCDownloader</namespace>
diff --git a/lib/Controller/Aria2Controller.php b/lib/Controller/Aria2Controller.php
index 471f633..c8852a2 100644
--- a/lib/Controller/Aria2Controller.php
+++ b/lib/Controller/Aria2Controller.php
@@ -54,14 +54,10 @@ class Aria2Controller extends Controller
             case "start":
                 $resp = $this->Start();
                 break;
-            case "pause":
-                $resp = $this->doAction('pause', $gid);
-                break;
-            case "remove":
-                $resp = $this->doAction('remove', $gid);
-                break;
             case "unpause":
-                $resp = $this->doAction('unpause', $gid);
+            case "remove":
+            case "pause":
+                $resp = $this->doAction($path, $gid);
                 break;
             case "get":
                 $resp = $this->doAction('tellStatus', $gid);
diff --git a/lib/Tools/Youtube.php b/lib/Tools/Youtube.php
index c202081..f0693cf 100644
--- a/lib/Tools/Youtube.php
+++ b/lib/Tools/Youtube.php
@@ -16,6 +16,7 @@ class Youtube
     private $timeout = 60 * 60 * 15;
     private $outTpl = "/%(id)s-%(title)s.%(ext)s";
     private $defaultDir = "/tmp/downloads";
+    private $env = [];
 
     public function __construct($config)
     {
@@ -23,14 +24,21 @@ class Youtube
         $this->bin = Helper::findBinaryPath('youtube-dl');
         $this->init();
         $this->setDownloadDir($config['downloadDir']);
-        $this->helper = YoutubeHelper::create();
     }
-
     public function init()
     {
+        if (empty($lang = getenv('LANG')) || strpos(strtolower($lang), 'utf-8') === false) {
+            $lang = 'C.UTF-8';
+        }
+        $this->setEnv('LANG', $lang);
         $this->addOption("--no-mtime");
     }
 
+    public function setEnv($key, $val)
+    {
+        $this->env[$key] = $val;
+    }
+
     public function GetUrlOnly()
     {
         $this->addOption('--get-filename');
@@ -66,7 +74,7 @@ class Youtube
         $this->setUrl($url);
         $this->prependOption($this->bin);
         // $this->buildCMD();
-        $process = new Process($this->options);
+        $process = new Process($this->options, null, $this->env);
         //the maximum time required to download the file
         $process->setTimeout($this->timeout);
         try {
@@ -81,12 +89,13 @@ class Youtube
 
     public function download($url)
     {
+        $this->helper = YoutubeHelper::create();
         $this->downloadDir = $this->downloadDir ?? $this->defaultDir;
         $this->prependOption($this->downloadDir . $this->outTpl);
         $this->prependOption("-o");
         $this->setUrl($url);
         $this->prependOption($this->bin);
-        $process = new Process($this->options);
+        $process = new Process($this->options, null, $this->env);
         $process->setTimeout($this->timeout);
         $process->run(function ($type, $buffer) use ($url) {
             if (Process::ERR === $type) {
diff --git a/lib/Tools/YoutubeHelper.php b/lib/Tools/YoutubeHelper.php
index 6d4dc5f..8fa2975 100644
--- a/lib/Tools/YoutubeHelper.php
+++ b/lib/Tools/YoutubeHelper.php
@@ -29,7 +29,7 @@ class YoutubeHelper
     }
     public function getFilePath($output)
     {
-        $rules = '#\[download\]\s+Destination:\s+(?<filename>.*\.(?<ext>(mp4|mp3|aac)))$#i';
+        $rules = '#\[download\]\s+Destination:\s+(?<filename>.*\.(?<ext>(mp4|mp3|aac|webm|m4a|ogg)))$#i';
 
         preg_match($rules, $output, $matches);