php feed z youtube najednou přestal fungovat

<?php

if(isset($_POST["obnovit"]))
{

$result = DB::query("SELECT * FROM [youtube_channel]")->fetchAll();
foreach ($result as $n => $row) {

//rss reader &start-index=51
$api_v2 = "http://gdata.youtube.com/feeds/api/users/".$row->yt_url."/uploads?max-results=50&v=2&start-index=1";
foreach (json_decode(file_get_contents("$api_v2&alt=json"))->feed->entry as $entry) {

$src = str_replace(array('http://www.youtube.com/v/', '?version=3&f=user_uploads&app=youtube_gdata'), '', $entry->content->src);

 
$arr = array(
    'url' => $src,
    'channel'  => $row->name,
    'channel_url'  => friendly_url($row->name),
    'name'  => $entry->{'media$group'}->{'media$title'}->{'$t'},
    'description'  => $entry->{'media$group'}->{'media$description'}->{'$t'},
    'views'  => $entry->{'yt$statistics'}->{'viewCount'},
    'date'  => $entry->{'media$group'}->{'yt$uploaded'}->{'$t'},
    'likes'  => $entry->{'yt$rating'}->{'numLikes'},
    'dislikes'  => $entry->{'yt$rating'}->{'numDislikes'},
    'priority'  => $row->priority,
);

DB::query("INSERT IGNORE INTO [youtube_videos]", $arr);

}

} 

}