Resize plex metadata images

plex-meta-resize.php

<?php

$a = new img_resize();
$a->run();

class img_resize {

        public $img_files = array();
        public $img_path = "";
        public $bad_files = array();
        public $img_pix_limit = 921600; // 1280*720

        public function __construct() {
                $this->img_path = getcwd();
                $this->img_path = '/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Metadata/';
        }

        public function run() {
                $this->_get_images();
                $this->_resize_images();
                print_r($this->bad_files);
        }


        private function _resize_images() {
                foreach ($this->img_files as $img_file) {
                        $mogrify_out = array();
                        $cmd_resize = sprintf("mogrify -resize 921600@ '%s'", $img_file);
                        exec($cmd_resize,$mogrify_out,$mogrify_ret);
                        if ($mogrify_ret == 0) {
                                print sprintf("info: successfully resized:[%s]\n",basename($img_file));
                                $this->img_convert_success[] = $img_file;
                        } else {
                                $this->img_convert_fail[] = $img_file;
                        }
                }
        }
        private function _get_images() {
                $cmd = sprintf("find '%s' -type f -size +400k",$this->img_path);
                exec($cmd,$found,$ret);
                if ($ret == 0) {
                        foreach ($found as $file) {
                                $identify_data = array();
                                $cmd_identify = sprintf("identify '%s'",$file);
                                exec($cmd_identify,$identify_data,$identify_ret);
                                if ($identify_ret == 0) {
                                        // JPEG 1920x1080
                                        if (preg_match("/.*JPEG\s([\d]{1,})x([\d]{1,})\s.*/",$identify_data[0],$identify_m)) {
                                                $tmp_px_size = $identify_m[1]*$identify_m[2];
                                                if ( $tmp_px_size > $this->img_pix_limit ) {
                                                        print sprintf("info: [%s] size:[%sx%s] Needs resizing: [%s > %s]\n",basename($file), $identify_m[1], $identify_m[2], $tmp_px_size, $this->img_pix_limit);
                                                        $this->img_files[] = $file;
                                                }
                                        } else {
                                                $this->bad_files[] = $file;
                                        }
                                } else {
                                        $this->bad_files[] = $file;
                                }
                        }
                }
        }
}

Thank you so much for this, works great on Ubuntu via Terminal even on external SSD with Plex server data on it. Just modified the $this->img_path = accordingly and saved 10gig!

Was hoping to target 900gig Plex music library metadata in Artist and Albums now.

Would you mind sharing what would have to be modified in the script to get resize to max 5MB 500 x 500 pixels?

thank you in advance.

@triksmelb Haven't used this in a while, but my guess would be to change the value 921600 on line 11 & 28 to 250000 (500x500=250000). However, make sure to test this first on some test images you have. Goodluck! :)

thx @Fursje I'll try that.