title: uiwebview Video cannot be played in IOS 12.2
body: <p>iOS 12.2 real machine can not play the video in html5 loaded by UIWebView, link url <a href="http://community.cqliving.com/h5/info/detail/512.html?cid=512&amp;isOpenApp=&amp;f=10" rel="noreferrer">http://community.cqliving.com/h5/info/detail/512.html?cid=512&amp;isOpenApp=&amp;f=10</a>, other versions can play video</p>
  
  <p><a href="https://upload-images.jianshu.io/upload_images/3889208-d8bcf17c6ceb414d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240" rel="noreferrer">Rendering</a></p>