I thought YouTubeChannelSearch.php script also generates a list of YouTube channels that match the entered search term, which is supported by WIIMC+.
Below is my use case for Retrieving a user’s subscribed channels:
<link name="YouTube – Get User subscribed channels" type="search" addr="http://192.168.1.10/youtubeplus/YouTubeUserFeeds.php?m=s&user=" />
where s = subscribed channels
Regards,