Metadata updates

static functions: get_video_dimensions, get_bitrate, get_framerate, get_duration

Author: qencode-dev

examples/get_metadata.php

@@ -4,24 +4,31 @@
 use Qencode\Exceptions\QencodeApiException;
 use Qencode\Exceptions\QencodeClientException;
 use Qencode\Exceptions\QencodeException;
-use Qencode\Classes\CustomTranscodingParams;
-use Qencode\Classes\Format;
-use Qencode\Classes\Stream;
-use Qencode\Classes\Destination;
-use Qencode\Classes\Libx264_VideoCodecParameters;
 use Qencode\QencodeApiClient;
+use Qencode\Classes\Metadata;
 
 // Replace this with your API key
-$apiKey = '12345678';
+$apiKey = 'abcde12345';
 $video_url = 'https://nyc3.s3.qencode.com/qencode/bbb_30s.mp4';
 
 $q = new QencodeApiClient($apiKey);
 
 try {
+    log_message('Getting metadata for: '.$video_url.' ...');
+    $video_info = $q->getMetadata($video_url);
 
-    $metdata = $q->getMetadata($video_url);
+    list($width, $height) = Metadata::get_video_dimensions($video_info);
+    log_message('width, px: '.$width);
+    log_message('height, px: '.$height);
 
-    log_message($metdata);
+    $bitrate = Metadata::get_bitrate($video_info);
+    log_message('bitrate, b/s: '.$bitrate);
+
+    $framerate = Metadata::get_framerate($video_info);
+    log_message('framerate, fps: '.$framerate);
+
+    $duration = Metadata::get_duration($video_info);
+    log_message('duration, sec: '.$duration);
 
     echo "DONE!";
 
@@ -37,7 +44,6 @@
     var_export($q->getLastResponseRaw());
 }
 
-function log_message($json) {
-    $msg = json_encode($json);
+function log_message($msg) {
     echo $msg."\n";
 }

src/Classes/Metadata.php

@@ -7,7 +7,6 @@
 class Metadata extends TranscodingTask {
     function __construct($api, $task_token)
     {
-        // вызов конструктора базового класс
         parent::__construct($api, $task_token);
     }
     /**
@@ -25,9 +24,6 @@ public function get(string $video_url) {
         do {
             sleep(5);
             $response =parent::getStatus();
-            if (is_array($response) and array_key_exists('percent', $response)) {
-                log_message("Completed: {$response['percent']}%");
-            }
         } while ($response['status'] != 'completed');
 
         $urlMet = '';
@@ -37,4 +33,66 @@ public function get(string $video_url) {
         $response = $this->api->get($urlMet);
         return $response;
     }
+
+    public static function get_a_stream_by_codec_type($video_info, $codec_type) {
+        if (! array_key_exists('streams', $video_info)) {
+            return null;
+        }
+        foreach ($video_info['streams'] as $stream) {
+            if ($stream['codec_type'] == $codec_type) {
+                return $stream;
+            }
+        }
+        return null;
+    }
+
+    public static function get_video_stream_info($video_info) {
+        return self::get_a_stream_by_codec_type($video_info, 'video');
+    }
+
+    public static function get_audio_stream_info($video_info) {
+        return self::get_a_stream_by_codec_type($video_info, 'audio');
+    }
+
+    public static function get_video_dimensions($video_info) {
+        $video_stream = self::get_video_stream_info($video_info);
+        if (! $video_stream)
+            return null;
+        return [$video_stream['width'], $video_stream['height']];
+    }
+
+    public static function get_bitrate($video_info, $stream_type = 'video') {
+        $stream = null;
+        if ($stream_type == 'video') {
+            $stream = self::get_video_stream_info($video_info);
+        }
+        if ($stream_type == 'audio') {
+            $stream = self::get_audio_stream_info($video_info);
+        }
+        if (is_array($stream) and array_key_exists('bit_rate', $stream)) {
+            $bitrate = $stream['bit_rate'];
+        }
+        else {
+            $bitrate = null;
+        }
+        return $bitrate;
+    }
+
+    public static function get_framerate($video_info) {
+        $stream = self::get_video_stream_info($video_info);
+        $avg_frame_rate = $stream['avg_frame_rate'];
+        if (strpos($avg_frame_rate, '/') !== FALSE) {
+            $buf = explode('/', $avg_frame_rate);
+            $framerate = floatval($buf[0]) / floatval($buf[1]);
+        }
+        else {
+            $framerate = floatval($avg_frame_rate);
+        }
+        return round($framerate, 2);
+    }
+
+    public static function get_duration($video_info) {
+        return $video_info['format']['duration'];
+    }
+
 }