Video label forbids downloading. The test is valid. Hide button. The test is valid at three points

adopt controlslist And disable right clicking so that the player cannot be downloaded

<video src="{$data.h_video}" class="swiper-slide-img" id="qqq" controls controlslist="nodownload  nofullscreen noremoteplayback" oncontextmenu = "return false">
     Your browser does not support it  video  label .
</video>

But there is a three-point function in the lower right corner of Google browser （ Download and picture in picture ）, Picture in picture cannot be removed , adopt js The way to get rid of ：

var video = $('#qqq');
//console.log(video); // Get all the properties and methods by printing 
video[0]['disablePictureInPicture'] = true; //disablePictureInPicture The property of the is changed to true

No downloads and picture in picture , It disappeared at three o'clock