Video标签，禁止右键下载视频等操作

关键：oncontextmenu="return false;"

      <video
                    oncontextmenu="return false;"
                    id="video"
                    class="video"
                    :src="detail.url"
                    autoplay="true"
                    :controls="videoControls"
                  >
                    <source :src="detail.url" />
                  </video>