Youtube video playback starts but stops immediately.
I tried running both IE10 and 11, Firefox and Chrome and they all have the same unwanted behaviour. When a Youtube video is used as a source the playback starts and the video is seekable but stops playing immediately.
My player (v6.5.3609) is configured correctly and works perfectly for all operating system and browser combination, except for windows 8.1. The version of Flash that I'm running is up to date (v18.104.22.168) and identical on both my mac and other windows boxes. I am not using an add-blocker.
The following error is shown in the console:
Error: Ad adLoadError error: Unable to request ads from server. Cause: Error #2048: Security sandbox violation: http://s.ytimg.com/yts/swfbin/player-vfltTelqG/ad3_f9.swf cannot load data from http://googleads.g.doubleclick.net/. errorCode: 1103
The Flash debugger log also shows a bunch of **Security sandbox violation** errors resembling the one above all related to request going to Google/Youtube servers.
I found this quirk when using JW Player in my own application but the same behaviour can be replicated using the wizard on jwplayer.com.