My $20 DNLA dongle plays full screen video just fine, both from YouTube and EurosportHD and just screen mirroring. I have an Xperia Z. I've watched a 2 hour Yo

My $20 DNLA dongle plays full screen video just fine, both from YouTube and EurosportHD and just screen mirroring. I have an Xperia Z. I've watched a 2 hour YouTube movie on it, with no prob - except that even on 1A mains power it discharges the battery quicker than it can charge it.