public function getAudioChannels()
    {
        if ($this->audioChannels === null) {
            $match = [];
            preg_match(self::$REGEX_AUDIO_CHANNELS, $this->output, $match);
            if (array_key_exists(1, $match)) {
                switch (trim($match[1])) {
                    case 'mono':
                        $this->audioChannels = 1;
                        break;
                    case 'stereo':
                        $this->audioChannels = 2;
                        break;
                    case '5.1':
                        $this->audioChannels = 6;
                        break;
                    case '5:1':
                        $this->audioChannels = 6;
                        break;
                    default:
                        $this->audioChannels = (int)$match[1];
                }
            } else {
                $this->audioChannels = 0;
            }
        }

        return $this->audioChannels;
    }
public function getAudioChannels()
    {
        if ($this->audioChannels === null) {
            $match = [];
            preg_match(self::$REGEX_AUDIO_CHANNELS, $this->output, $match);
            if (array_key_exists(1, $match)) {
                switch (trim($match[1])) {
                    case 'mono':
                        $this->audioChannels = 1;
                        break;
                    case 'stereo':
                        $this->audioChannels = 2;
                        break;
                    case '5.1':
                        $this->audioChannels = 6;
                        break;
                    case '5:1':
                        $this->audioChannels = 6;
                        break;
                    default:
                        $this->audioChannels = (int)$match[1];
                }
            } else {
                $this->audioChannels = 0;
            }
        }

        return $this->audioChannels;
    }
public function getAudioChannels ( ) { if ( $ this -> audioChannels === null ) { $ match = [ ] ; preg_match ( self :: $ REGEX_AUDIO_CHANNELS , $ this -> output , $ match ) ; if ( array_key_exists ( 1 , $ match ) ) { switch ( trim ( $ match [ 1 ] ) ) { case 'mono' : $ this -> audioChannels = 1 ; break ; case 'stereo' : $ this -> audioChannels = 2 ; break ; case '5.1' : $ this -> audioChannels = 6 ; break ; case '5:1' : $ this -> audioChannels = 6 ; break ; default : $ this -> audioChannels = ( int ) $ match [ 1 ] ; } } else { $ this -> audioChannels = 0 ; } } return $ this -> audioChannels ; }
Return the number of audio channels in this movie.

@return int
Return the number of audio channels in this movie .