diff --git a/.travis.yml b/.travis.yml
index 8d48350..bc13fc5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 language: php
 
 php:
-  - 7.1
-  - 7.2
-  - 7.3
+  - '7.1'
+  - '7.2'
+  - '7.3'
 
 env:
   matrix:
@@ -17,9 +17,9 @@ before_install:
 
 install:
   - travis_retry composer update ${COMPOSER_FLAGS} --no-interaction
-  - sudo add-apt-repository -y ppa:mc3man/trusty-media
+  - sudo add-apt-repository -y ppa:mc3man/xerus-media
   - sudo apt-get -qq update
   - sudo apt-get install -y --allow-unauthenticated software-properties-common ffmpeg
 
 script:
-  - phpunit
+  - ./vendor/bin/phpunit
diff --git a/composer.json b/composer.json
index 811c2e7..9743e0a 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,8 @@
     },
     "require-dev": {
         "mockery/mockery": "^1.0",
-        "phpunit/phpunit": "7.5"
+        "phpunit/phpunit": "7.5",
+        "twistor/flysystem-http": "^0.2.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Disk.php b/src/Disk.php
index 3f94cfe..bb93393 100644
--- a/src/Disk.php
+++ b/src/Disk.php
@@ -6,6 +6,7 @@
 use League\Flysystem\Adapter\Local as LocalAdapater;
 
 /**
+ * @method \League\Flysystem\FilesystemInterface getDriver()
  * @method bool put($path, $contents, $visibility = null)
  * @method array|false read($path)
  * @method void setVisibility($path, $visibility)
diff --git a/src/FFMpeg.php b/src/FFMpeg.php
index 11148f5..59a3895 100644
--- a/src/FFMpeg.php
+++ b/src/FFMpeg.php
@@ -77,7 +77,11 @@ public function open($path): Media
             $ffmpegPathFile = $file->getFullPath();
         } else {
             $ffmpegPathFile = static::newTemporaryFile();
-            file_put_contents($ffmpegPathFile, $this->disk->read($path));
+
+            stream_copy_to_stream(
+                $this->disk->getDriver()->readStream($path),
+                fopen($ffmpegPathFile, 'w')
+            );
         }
 
         $ffmpegMedia = $this->ffmpeg->open($ffmpegPathFile);
diff --git a/tests/AudioVideoTest.php b/tests/AudioVideoTest.php
index fd08b03..1124e74 100644
--- a/tests/AudioVideoTest.php
+++ b/tests/AudioVideoTest.php
@@ -25,6 +25,7 @@
 use Pbmedia\LaravelFFMpeg\File;
 use Pbmedia\LaravelFFMpeg\Media;
 use Pbmedia\LaravelFFMpeg\MediaExporter;
+use Twistor\Flysystem\Http\HttpAdapter;
 
 class AudioVideoTest extends TestCase
 {
@@ -197,16 +198,10 @@ public function testOpeningFromRemoteDisk()
         $config      = Mockery::mock(ConfigRepository::class);
         $logger      = new Writer(new Logger('ffmpeg'));
 
-        $adapter = Mockery::mock(AdapterInterface::class);
+        $adapter = new HttpAdapter("https://raw.githubusercontent.com/pascalbaljetmedia/laravel-ffmpeg/master/tests/src/");
+        $driver  = new \League\Flysystem\Filesystem($adapter);
 
-        $driver = Mockery::mock(FilesystemInterface::class);
-        $driver->shouldReceive('getAdapter')->andReturn($adapter);
-
-        $remoteDisk = Mockery::mock(FilesystemAdapter::class);
-        $remoteDisk->shouldReceive('getDriver')->andReturn($driver);
-        $remoteDisk->shouldReceive('read')->with('remote_guitar.m4a')->andReturn(
-            $videoContents = file_get_contents(__DIR__ . '/src/guitar.m4a')
-        );
+        $remoteDisk = new FilesystemAdapter($driver);
 
         $localDisk = $this->getLocalAdapter();
 
@@ -217,7 +212,7 @@ public function testOpeningFromRemoteDisk()
         $config->shouldReceive('get')->once()->with('filesystems.default')->andReturn('s3');
 
         $service = new FFMpeg($filesystems, $config, $logger);
-        $media   = $service->open('remote_guitar.m4a');
+        $media   = $service->open('guitar.m4a');
 
         $format = new \FFMpeg\Format\Audio\Aac;