Modification of the filters

src/FFMpeg/Filters/Waveform/WaveformDownmixFilter.php

@@ -14,15 +14,19 @@ namespace FFMpeg\Filters\Waveform;
 use FFMpeg\Exception\RuntimeException;
 use FFMpeg\Media\Waveform;
 
-class WaveformRatioFixerFilter implements WaveformFilterInterface
+class WaveformDownmixFilter implements WaveformFilterInterface
 {
+
     /** @var boolean */
     private $downmix;
+    /** @var integer */
+    private $priority;
 
     // By default, the downmix value is set to FALSE.
-    public function __construct($downmix = FALSE)
+    public function __construct($downmix = FALSE, $priority = 0)
     {
         $this->downmix = $downmix;
+        $this->priority = $priority;
     }
 
     /**
@@ -33,6 +37,14 @@ class WaveformRatioFixerFilter implements WaveformFilterInterface
         return $this->downmix;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return $this->priority;
+    }
+
     /**
      * {@inheritdoc}
      */

src/FFMpeg/Filters/Waveform/WaveformFilters.php

@@ -23,16 +23,15 @@ class WaveformFilters
     }
 
     /**
-     * Fixes the display ratio of the output waveform.
+     * Sets the downmix of the output waveform.
      *
-     * In case the sample ratio and display ratio are different, image may be
-     * anamorphozed. This filter fixes this by specifying the output size.
+     * If you want a simpler waveform, sets the downmix to TRUE.
      *
      * @return WaveformFilters
      */
-    public function fixDisplayRatio()
+    public function setDownmix()
     {
-        $this->waveform->addFilter(new DisplayRatioFixerFilter());
+        $this->waveform->addFilter(new DownmixFilter());
 
         return $this;
     }