Clarification on playing Youtube embedded in JWPLayer in IE9+
After reading questions and pages on the site, I still do not get what it is possible to do for Youtube embedded videos.
I work on a site where we use JWPlayer to run mp4 videos and Youtube ones as well.
We use the version 6.12.4956 (Premium edition) of JWPlayer.
All our mp4 video work well on all browsers we target but we meet troubles with Youtube videos on IE9+ unless we set the primary attribute to "flash".
If it is set to "html5", the video is not played and the "charging video" icon runs boundlessly.
I see in the page "http://support.jwplayer.com/customer/portal/articles/1406725-youtube-video-embed" that you set the primary to "flash" too for Youtube videos.
Does that means for IE9+, we must set "primary" to "flash" and then JWplayer cannot play Youtube video in HTML5 mode?
If Yes, Does that mean that JWplayer cannot play any Youtube Embedded in IE9+ if Flash is not installed because I also see this sentence: "HTML5 playback in Internet Explorer 9 was removed in JW Player 6.11." on the page "http://support.jwplayer.com/customer/portal/articles/1403635-media-format-reference"?