User blog comment:DaNASCAT/Technical Update: August 26, 2015/@comment-1009971-20150828142912/@comment-5558012-20150828151022

"Most videos that worked with the custom player are somehow blocked when we use the default player."
 * I've never experienced this (outside videos blocked in particular countries, deleted, made private, or no longer exist) so I'm also interested in an example or two if you may.