All of a sudden all my YouTube videos on my site have disappeared, I am using the following URL to get the information from the Playlists(changing the playlist id as needed):
http://gdata.youtube.com/feeds/api/playlists/27D1E834D93C2D88?&max-results=50
This has been working great for months, even this morning but around lunch time today everything went away, and hasn't been seen since. All I get are 404 errors, anyone have any idea what is going on?
I have recently experienced the same problem.
You can add PL to the beginning of the playlist ID, so in your case:
http://gdata.youtube.com/feeds/api/playlists/PL27D1E834D93C2D88?&max-results=50
That is currently working for me. Not sure why YouTube has changed this.
Here is another post on the same topic. YouTube API calls to playlist feed fails when playlist IDs are not prefixed with "PL"
I hope this helps!