js： wx.createVideoContext("myVideo").pause( wxml:   <cloud-player bindloadedmetadata="videoLoaded" width="750rpx" height="400rpx" playerid="myVideo" autoplay appid="xxxxx" fileid="xxxxxxx" controls="true" show-mute-btn="true" vslide-gesture="true" show-center-play-btn="{{true}}" bindplay="startPaly" bindended="playend" bindtimeupdate='videoUpdate'></cloud-player>