<html> <body bgcolor="#212127"> <head> <title><%= fname %></title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=0.6" /> <style> body { font: normal 14px Verdana; color: #999999; } video { width: 100% } </style> </head> <center> <h2> <%= fname %> </h2> </center> <video id="videoPlayer" controls> <source src="<%= url %><%= path %>?stream=true" type="video/mp4"> </video> </body> <script> var v = document.getElementsByTagName('video')[0] v.style.maxHeight = window.innerHeight - 100 v.maxWidth = window.innerWidth console.log('a') </script> </html>