code: function insertSingle(){
          var width = $G("videoWidth"),
              height = $G("videoHeight"),
              url=$G('videoUrl').value,
              align = findFocus("videoFloat","name");
          if(!url) return false;
          if ( !checkNum( [width, height] ) ) return false;
          editor.execCommand('insertvideo', {
              url: convert_url(url),
              width: width.value,
              height: height.value,
              align: align
          }, isModifyUploadVideo ? 'upload':null);
      }
docs: 将单个视频信息插入编辑器中