mediaElement.play() 方法返回一个被拒绝的 Promise

Question

我无法在移动浏览器上播放我的视频。使用 Safari 远程调试时，我遇到以下问题：

Unhandled Promise Rejection: AbortError: The operation was aborted.

我找到这个解决方案：https://developers.google.com/web/updates/2017/06/play-request-was-interrupted

但我不知道如何在我的代码中使用它来解决问题。

<video muted id="video" class="absolute right-0 bottom-0 min-w-full min-h-full w-auto" controls>
    <source src="/path/to/video.mp4" type="video/mp4">
</video>

let video = document.getElementbyId('video');
let video_cta = document.getElementbyId('video_cta');

//this doesn't fix my problem
var videoPromise = video.play();

if (videoPromise != undefined) {
    videoPromise.then(function(_) {
      video.pause();
      video.currentTime = 0;
  });
}

//start video after click the button
video_cta.addEventListener('click' function() {
    video.play()
})

Answer 1

• 首先，autoplay属性是必需的。

  <video src='...' controls muted自动播放></video>

• 当videoPromise引用视频并调用方法时.play()，它将在 Promise 中工作。

  const videoPromise = document.querySelector('video').play();

• OP 代码中还存在一个依赖项.getElementById()被误用：

  let video = document.getElement乙yId('video');
let video_cta = document.getElement乙yId('video_cta');

• OP 中提供的Google文章还提到该<source>标签无法reject正确处理：

  使用

  <video src='...'></video>

  不是

  <video> <source src='...'> </video>

• 这应该会停止错误消息：

  Unhandled Promise Rejection: AbortError: The operation was aborted.

演示 1使用Promiseand 方法.then()。演示 2使用async/await. 它被包装在async functionIIFE （我立即调用函数表达式）中

演示1

承诺

let cta = document.querySelector('#cta');

const videoPromise = document.querySelector('video').play();

if (videoPromise != undefined) {
  videoPromise.then(_ => {
video.play();
  });
}

cta.addEventListener('click', function() {
  video.play();
});

<video src="https://storage04.dropshots.com/photos6000/photos/1381926/20170326/005609.mp4" id="video" class="absolute right-0 bottom-0 min-w-full min-h-full w-auto" controls autoplay muted></video>
<button id='cta'>CTA</button>

演示2

async/await

let cta = document.querySelector('#cta');

const video = document.querySelector('video');

(function() {
  playMedia();
})();

async function playMedia() {
  try {
    await video.play();
  } catch (err) {}
}

cta.addEventListener('click', function() {
  video.play();
});

<video src="https://storage04.dropshots.com/photos6000/photos/1381926/20170326/005609.mp4" id="video" class="absolute right-0 bottom-0 min-w-full min-h-full w-auto" controls autoplay muted></video>
<button id='cta'>CTA</button>