Please use the recommended method of embedding Youtube videos:
https://developers.google.com/youtub...dding_a_Player
IFrame embeds are the recommended method for embedding a YouTube player because the IFrame will select the appropriate player based on the client's capabilities and available YouTube file formats.
The <object> embed method used in this post forces the use of Flash, which some may not have or have chosen to disable.
http://na.finalfantasyxiv.com/lodest...1e7412d9f4f549

In fact, the use of Flash <object> embeds is deprecated:
https://developers.google.com/youtub..._Object_Embeds
YouTube <object> embeds were deprecated on January 27, 2015. Please migrate your applications to the <iframe> embeds, which can intelligently use whichever embedded player – HTML (<video>) or Flash (<object>) – the client supports.