This filter is a video filter, not a frame filter

src/FFMpeg/Filters/Frame/ExtractMultipleFramesFilter.php

@@ -1,114 +0,0 @@
-<?php
-
-/*
- * This file is part of PHP-FFmpeg.
- *
- * (c) Alchemy <dev.team@alchemy.fr>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace FFMpeg\Filters\Frame;
-
-use FFMpeg\Exception\RuntimeException;
-use FFMpeg\Media\Frame;
-
-class ExtractMultipleFramesFilter extends AbstractMediaType implements FrameFilterInterface
-{
-    /** will extract a frame every second */
-    const FRAMERATE_EVERY_SEC = '1/1';
-    /** will extract a frame every 2 seconds */
-    const FRAMERATE_EVERY_2SEC = '1/2';
-    /** will extract a frame every 5 seconds */
-    const FRAMERATE_EVERY_5SEC = '1/5';
-    /** will extract a frame every 10 seconds */
-    const FRAMERATE_EVERY_10SEC = '1/10';
-    /** will extract a frame every 30 seconds */
-    const FRAMERATE_EVERY_10SEC = '1/30';
-    /** will extract a frame every minute */
-    const FRAMERATE_EVERY_10SEC = '1/60';
-{
-    /** @var integer */
-    private $priority;
-    private $frameRate;
-    private $destinationFolder;
-
-    public function __construct($frameRate = self::FRAMERATE_EVERY_SEC, $destinationFolder = __DIR__, $priority = 0)
-    {
-        $this->priority = $priority;
-        $this->frameRate = $frameRate;
-        $this->destinationFolder = $destinationFolder;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getPriority()
-    {
-        return $this->priority;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getFrameRate()
-    {
-        return $this->frameRate;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getDestinationFolder()
-    {
-        return $this->destinationFolder;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function apply(Frame $frame)
-    {
-        $dimensions = null;
-        $commands = array();
-
-        foreach ($frame->getVideo()->getStreams() as $stream) {
-            if ($stream->isVideo()) {
-                try {
-                    // Get the duration of the video
-                    $duration = $this->getFormat()->get('duration');
-
-                    // Get the number of frames per second we have to extract.
-                    if(preg_match('/(\d+)(?:\s*)([\+\-\*\/])(?:\s*)(\d+)/', $this->frameRate, $matches) !== FALSE){
-                        $operator = $matches[2];
-
-                        switch($operator){
-                            case '/':
-                                $nbFramesPerSecond = $matches[1] / $matches[3];
-                                break;
-
-                            default:
-                                throw new InvalidArgumentException('The frame rate is not a proper division: ' . $this->frameRate);
-                                break;
-                        }
-                    }
-
-                    // Set the number of digits to use in the exported filenames
-                    $nbDigitsInFileNames = ceil( $duration * $nbFramesPerSecond );
-
-                    // Set the parameters
-                    $commands[] = '-vf';
-                    $commands[] = 'fps=' . $this->frameRate;
-                    $commands[] = $this->destinationFolder . 'frame-%0'.$nbDigitsInFileNames.'d.jpg';
-                    break;
-                }
-                catch (RuntimeException $e) {
-
-                }
-            }
-        }
-
-        return $commands;
-    }
-}

src/FFMpeg/Filters/Frame/FrameFilters.php

@@ -36,19 +36,4 @@ class FrameFilters
 
         return $this;
     }
-
-    /**
-     * Fixes the display ratio of the output frame.
-     *
-     * In case the sample ratio and display ratio are different, image may be
-     * anamorphozed. This filter fixes this by specifying the output size.
-     *
-     * @return FrameFilters
-     */
-    public function extractMultipleFrames($frameRate = ExtractMultipleFramesFilter::FRAMERATE_EVERY_2SEC, $destinationFolder = __DIR__)
-    {
-        $this->frame->addFilter(new ExtractMultipleFramesFilter($frameRate, $destinationFolder));
-
-        return $this;
-    }
 }

src/FFMpeg/Filters/Video/ExtractMultipleFramesFilter.php

@@ -0,0 +1,109 @@
+<?php
+
+/*
+ * This file is part of PHP-FFmpeg.
+ *
+ * (c) Strime <romain@strime.io>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FFMpeg\Filters\Video;
+
+use FFMpeg\Exception\InvalidArgumentException;
+
+class ExtractMultipleFramesFilter implements VideoFilterInterface
+{
+    /** will extract a frame every second */
+    const FRAMERATE_EVERY_SEC = '1/1';
+    /** will extract a frame every 2 seconds */
+    const FRAMERATE_EVERY_2SEC = '1/2';
+    /** will extract a frame every 5 seconds */
+    const FRAMERATE_EVERY_5SEC = '1/5';
+    /** will extract a frame every 10 seconds */
+    const FRAMERATE_EVERY_10SEC = '1/10';
+    /** will extract a frame every 30 seconds */
+    const FRAMERATE_EVERY_10SEC = '1/30';
+    /** will extract a frame every minute */
+    const FRAMERATE_EVERY_10SEC = '1/60';
+{
+    /** @var integer */
+    private $priority;
+    private $frameRate;
+    private $destinationFolder;
+
+    public function __construct($frameRate = self::FRAMERATE_EVERY_SEC, $destinationFolder = __DIR__, $priority = 0)
+    {
+        $this->priority = $priority;
+        $this->frameRate = $frameRate;
+        $this->destinationFolder = $destinationFolder;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getPriority()
+    {
+        return $this->priority;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFrameRate()
+    {
+        return $this->frameRate;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDestinationFolder()
+    {
+        return $this->destinationFolder;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function apply(Video $video, VideoInterface $format)
+    {
+        $dimensions = null;
+        $commands = array();
+
+        try {
+            // Get the duration of the video
+            $duration = $this->getFormat()->get('duration');
+
+            // Get the number of frames per second we have to extract.
+            if(preg_match('/(\d+)(?:\s*)([\+\-\*\/])(?:\s*)(\d+)/', $this->frameRate, $matches) !== FALSE){
+                $operator = $matches[2];
+
+                switch($operator){
+                    case '/':
+                        $nbFramesPerSecond = $matches[1] / $matches[3];
+                        break;
+
+                    default:
+                        throw new InvalidArgumentException('The frame rate is not a proper division: ' . $this->frameRate);
+                        break;
+                }
+            }
+
+            // Set the number of digits to use in the exported filenames
+            $nbDigitsInFileNames = ceil( $duration * $nbFramesPerSecond );
+
+            // Set the parameters
+            $commands[] = '-vf';
+            $commands[] = 'fps=' . $this->frameRate;
+            $commands[] = $this->destinationFolder . 'frame-%0'.$nbDigitsInFileNames.'d.jpg';
+            break;
+        }
+        catch (RuntimeException $e) {
+            throw new RuntimeException('An error occured while extracting the frames: ' . $e->getCode() . ' The message: '$e->getMessage());
+        }
+
+        return $commands;
+    }
+}

src/FFMpeg/Filters/Video/VideoFilters.php

@@ -132,4 +132,17 @@ class VideoFilters extends AudioFilters
 
         return $this;
     }
+
+    /**
+     * @param string $frameRate
+     * @param string  $destinationFolder
+     *
+     * @return $this
+     */
+    public function extractMultipleFrames($frameRate = ExtractMultipleFramesFilter::FRAMERATE_EVERY_2SEC, $destinationFolder = __DIR__)
+    {
+        $this->frame->addFilter(new ExtractMultipleFramesFilter($frameRate, $destinationFolder));
+
+        return $this;
+    }
 }