<?php
$texto = '"play_url":"http:/video.server.com/","';
echo $link[1][0];
PD9waHAKCiR0ZXh0byA9ICcicGxheV91cmwiOiJodHRwOi92aWRlby5zZXJ2ZXIuY29tLyIsIic7CnByZWdfbWF0Y2hfYWxsKCcvInBsYXlfdXJsIjoiKC4qKSIsIi9pJywgJHRleHRvLCAkbGluayk7CmVjaG8gJGxpbmtbMV1bMF07