diff --git a/classes/Downloader.php b/classes/Downloader.php
index c74bf94..ebf0a4a 100644
--- a/classes/Downloader.php
+++ b/classes/Downloader.php
@@ -14,6 +14,8 @@ use Alltube\Library\Exception\WrongPasswordException;
 use Alltube\Library\Exception\YoutubedlException;
 use GuzzleHttp\Client;
 use Psr\Http\Message\ResponseInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
 use Symfony\Component\Process\Process;
 
 /**
@@ -65,6 +67,11 @@ class Downloader
      */
     private $params;
 
+    /**
+     * @var LoggerInterface
+     */
+    private $logger;
+
     /**
      * Downloader constructor.
      * @param string $youtubedl youtube-dl binary path
@@ -88,6 +95,17 @@ class Downloader
         $this->avconv = $avconv;
         $this->phantomjsDir = $phantomjsDir;
         $this->avconvVerbosity = $avconvVerbosity;
+
+        $this->logger = new NullLogger();
+    }
+
+    /**
+     * @param LoggerInterface $logger
+     * @return void
+     */
+    public function setLogger(LoggerInterface $logger)
+    {
+        $this->logger = $logger;
     }
 
     /**
@@ -207,7 +225,10 @@ class Downloader
         $arguments[] = '-user_agent';
         $arguments[] = $video->getProp('dump-user-agent');
 
-        return new Process($arguments);
+        $process = new Process($arguments);
+        $this->logger->debug($process->getCommandLine());
+
+        return $process;
     }
 
 
@@ -226,6 +247,7 @@ class Downloader
         $process = $this->getProcess($arguments);
         //This is needed by the openload extractor because it runs PhantomJS
         $process->setEnv(['PATH' => $this->phantomjsDir]);
+        $this->logger->debug($process->getCommandLine());
         $process->run();
         if (!$process->isSuccessful()) {
             $errorOutput = trim($process->getErrorOutput());
diff --git a/composer.json b/composer.json
index 8385c9b..14654fe 100644
--- a/composer.json
+++ b/composer.json
@@ -4,9 +4,10 @@
   "license": "GPL-3.0-only",
   "homepage": "http://alltubedownload.net/",
   "require": {
+    "ext-json": "*",
     "guzzlehttp/guzzle": "^6.5",
-    "symfony/process": "^4.0|^5.0",
-    "ext-json": "*"
+    "psr/log": "^1.1",
+    "symfony/process": "^4.0|^5.0"
   },
   "require-dev": {
     "phpro/grumphp": "^0.18.0",
diff --git a/composer.lock b/composer.lock
index 31f45ec..e6457ee 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "e084bdaf7ed377ff4963c65d85513eca",
+    "content-hash": "9a53e4f77d715163307f6736896493b8",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
@@ -245,6 +245,53 @@
             ],
             "time": "2016-08-06T14:39:51+00:00"
         },
+        {
+            "name": "psr/log",
+            "version": "1.1.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "0f73288fd15629204f9d42b7055f72dacbe811fc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/0f73288fd15629204f9d42b7055f72dacbe811fc",
+                "reference": "0f73288fd15629204f9d42b7055f72dacbe811fc",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2020-03-23T09:12:05+00:00"
+        },
         {
             "name": "ralouphie/getallheaders",
             "version": "3.0.3",
@@ -1559,53 +1606,6 @@
             ],
             "time": "2019-01-08T18:20:26+00:00"
         },
-        {
-            "name": "psr/log",
-            "version": "1.1.3",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "0f73288fd15629204f9d42b7055f72dacbe811fc"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/0f73288fd15629204f9d42b7055f72dacbe811fc",
-                "reference": "0f73288fd15629204f9d42b7055f72dacbe811fc",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.1.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Psr\\Log\\": "Psr/Log/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "homepage": "https://github.com/php-fig/log",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2020-03-23T09:12:05+00:00"
-        },
         {
             "name": "roave/security-advisories",
             "version": "dev-master",