Materializar - Medios
Materialise tiene varias clases para hacer que las imágenes y los videos respondan a diferentes tamaños.
responsive-img - Hace que una imagen cambie de tamaño en función del tamaño de la pantalla.
video-container - Para contenedor receptivo que tiene videos incrustados.
responsive-video - Hace que los videos HTML5 sean receptivos.
Ejemplo
materialize_media.htm
<!DOCTYPE html>
<html>
<head>
<title>The Materialize Example</title>
<meta name = "viewport" content = "width = device-width, initial-scale = 1">
<link rel = "stylesheet"
href = "https://fonts.googleapis.com/icon?family=Material+Icons">
<link rel = "stylesheet"
href = "https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.3/css/materialize.min.css">
<script type = "text/javascript"
src = "https://code.jquery.com/jquery-2.1.1.min.js"></script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.3/js/materialize.min.js">
</script>
</head>
<body class = "container">
<h2>Materialize Media Examples</h2>
<hr/>
<h3>Images Demo</h3>
<div class = "card-panel">
<img src = "/html5/images/html5-mini-logo.jpg" alt = "" class = "responsive-img">
</div>
<div class = "card-panel">
<img src = "/html5/images/html5-mini-logo.jpg" alt = "" class = "circle responsive-img">
</div>
<h3>Responsive Embeded Video Demo</h3>
<div class = "video-container">
<iframe width = "540" height = "200"
src = "https://www.youtube.com/embed/Q8TXgCzxEnw?rel=0"
frameborder = "0" allowfullscreen></iframe>
</div>
<div class = "video-container">
<video width = "300" height = "200" controls autoplay>
<source src = "http://www.tutorialspoint.com/html5/foo.ogg" type = "video/ogg" />
<source src = "http://www.tutorialspoint.com/html5/foo.mp4" type = "video/mp4" />
Your browser does not support the video element.
</video>
</div>
</body>
</html>Resultado
Verifique el resultado.