自定义组件内wxml

<video id="myvideo2" src='https://peacebird-img.oss-cn-shanghai.aliyuncs.com/wx/2019-12-11-bar-12.mp4' enable-danmu danmu-btn controls>
  <cover-view bindtap="videoPlayCover">
    <cover-image class="img" src="http://ofstudio.com/tempimag/001.jpg" style="width: 50%;" />
  </cover-view>
</video>

自定义组件内JS

 methods: {
    videoPlayCover() {
      var video = wx.createVideoContext('myvideo2');
      console.log(video)
      video.play();
    }
  }

 video.play(); //执行失败

https://developers.weixin.qq.com/s/8xTOfJml7tfg