FEC-6363 #comment set preload true since FF 50 & chrome 51 mediaSource issue (#3230)
FEC-6363 #comment set preload true since FF 50 & chrome 51 mediaSource issue (#3230)


omridevk/mwEmbed,omridevk/mwEmbed,kaltura/mwEmbed,FlixMaster/mwEmbed,omridevk/mwEmbed,panda-os/mwEmbed,panda-os/mwEmbed,panda-os/mwEmbed,kaltura/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,kaltura/mwEmbed,alexmilk/mwEmbed,omridevk/mwEmbed,alexmilk/mwEmbed,FlixMaster/mwEmbed,FlixMaster/mwEmbed,alexmilk/mwEmbed,panda-os/mwEmbed,FlixMaster/mwEmbed