update:更新

src/components/layout-element/media/app-rawitem-video/app-rawitem-video.less

 .app-rawitem-video{
-    width: 600px;
-    height: auto;
-    max-width: 100%;    
-    min-height: 300px;
-    border: 1px solid gray;
     >video{
         width: 100%;
         height: 100%;