<!DOCTYPE HTML> <html class="reftest-wait"> <body style="background:white;" onload="setTimeout(function(){document.documentElement.className = '';}, 0);"> <!-- Test if we show video frame after removing valid poster. --> <video src="black140x100.webm" preload="auto" id="v" poster="blue250x200.png"></video> <script type="text/javascript"> document.getElementById('v').poster = ''; </script> </body> </html>