I can't say for sure this is what 3ball is using, but here is an XML file from NBA.com listing videos with associated titles, descriptions, thmbnails, and video

I can't say for sure this is what 3ball is using, but here is an XML file from NBA.com listing videos with associated titles, descriptions, thmbnails, and video urls. http://www.nba.com/sitemap_videos_0001.xml http://www.nba.com/sitemap_videos_0001.xml However it appears outdated since the dates only go up to 8/4/2016.