windows phone 8 - show global mediaelement to layoutroot? -

windows phone 8 - show global mediaelement to layoutroot? -

i want share mediaelement play video among many pages (only 1 page show video, others play sound only).

<mediaelement x:key="globalmedia" visibility="collapsed" autoplay="true" verticalalignment="center" stretch="uniform" /> // static media element in app.xaml

if dont show video, works fine. however, when seek add together mediaelement layoutroot: layoutroot.children.add(_media), got invalideoperationsystem exception (it told me mediaelement kid of element). has thought show global mediaelement layoutroot? thanks.

windows-phone-8 mediaelement