检测 HTML 视频自动播放防护

Detect HTML video autoplay prevention

本文关键字:自动播放 视频 HTML 检测      更新时间:2023-09-26

移动浏览器出于可以理解的原因阻止视频自动播放。我在网站上有一个视频背景,所以控制按钮是毫无疑问的,但我认为我可以弹出带有一些信息和按钮的窗口,用户可以在其中接受背景视频(触发手动播放)或不,并将其更改为一些静态图片。

所以问题是:有没有办法判断自动播放是否被浏览器中断了?

我尝试了onerror但它没有触发,所以我也尝试onsuspend

.HTML:

<video id='bgvid' src='bgvid.mp4' type='video/mp4' autoplay loop onsuspend='video_suspended()'>

Javascript:

function video_suspended() {
    $bgvideoElement=$("#bgvid").get(0);
        //Check if reason for suspend was completion or browser interruption
        if($bgvideoElement.readyState<1) {
            //Here comes some pop-up window and a button to
            $bgvideoElement.play();
    } 
}

它在平板电脑(Chrome)上运行良好,但在台式机(Chrome)上onsuspend不断无限触发(Firefox还可以)。

关于Chrome问题或任何替代方案的任何想法?

您可以随时测试当前浏览器是否会运行 video.play() 方法。此方法是异步的,https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/play 返回响应或错误。

测试算法包括检查我们在尝试运行 .play() 后是否收到错误。

export const checkUserAgentVideoAutoplay = async () => {
  const video = document.querySelector('#video-bg');
  try {
    await video.play();
    video.setAttribute('autoplay', true);
    console.log('video started playing successfully');
  } catch (err) {
    console.log(err, 'video play error');
    // do stuff in case your video is unavailable to play/autoplay
    // show user that video autoplay was aborted  
  }
}

这就是Safari中的控制台所说的,它拒绝播放.webm视频格式

AbortError: The operation was aborted.
"video play error"

没有与您的规范匹配的 javascript 标准函数,因为它是移动浏览器的安全功能......(它可以防止蜂窝数据浪费)。但是,如果您尝试过该代码并且它仅在移动浏览器中工作,则可以编写一个代码来检测您是否在移动设备上,如果是这样,请启用处理程序:

.HTML:

<video id='bgvid' src='bgvid.mp4' type='video/mp4' autoplay loop>

Javascript:

window.onload = function() {
    var isMobile = false;
    if(/(android|bb'd+|meego).+mobile|avantgo|bada'/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)'/|plucker|pocket|psp|series(4|6)0|symbian|treo|up'.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(navigator.userAgent) 
        || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s'-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|'-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw'-(n|u)|c55'/|capi|ccwa|cdm'-|cell|chtm|cldc|cmd'-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc'-s|devi|dica|dmob|do(c|p)o|ds(12|'-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly('-|_)|g1 u|g560|gene|gf'-5|g'-mo|go('.w|od)|gr(ad|un)|haie|hcit|hd'-(m|p|t)|hei'-|hi(pt|ta)|hp( i|ip)|hs'-c|ht(c('-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i'-(20|go|ma)|i230|iac( |'-|'/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |'/)|klon|kpt |kwc'-|kyo(c|k)|le(no|xi)|lg( g|'/(k|l|u)|50|54|'-[a-w])|libw|lynx|m1'-w|m3ga|m50'/|ma(te|ui|xo)|mc(01|21|ca)|m'-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t('-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)'-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|'-([1-8]|c))|phil|pire|pl(ay|uc)|pn'-2|po(ck|rt|se)|prox|psio|pt'-g|qa'-a|qc(07|12|21|32|60|'-[2-7]|i'-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55'/|sa(ge|ma|mm|ms|ny|va)|sc(01|h'-|oo|p'-)|sdk'/|se(c('-|0|1)|47|mc|nd|ri)|sgh'-|shar|sie('-|m)|sk'-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h'-|v'-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl'-|tdg'-|tel(i|m)|tim'-|t'-mo|to(pl|sh)|ts(70|m'-|m3|m5)|tx'-9|up('.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|'-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c('-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas'-|your|zeto|zte'-/i.test(navigator.userAgent.substr(0,4))) isMobile = true;
    if(isMobile) document.getElementById("bgvid").setAttribute("onsuspend", "video_suspended()"); //If we are on mobile, enable onsuspend handler...
};
function video_suspended() {
    $bgvideoElement=$("#bgvid").get(0);
        //Check if reason for suspend was completion or browser interruption
        if($bgvideoElement.readyState<1) {
            //Here comes some pop-up window and a button to
            $bgvideoElement.play();
    } 
}