我花了很多时间试图弄清楚为什么视频会像这样嵌入:
<video height="256" loop autoplay muted controls id="vid">
<source type="video/mp4" src="video_file.mp4"></source>
<source type="video/ogg" src="video_file.ogg"></source>
</video>
一旦页面在FireFox中加载，就开始自动播放，但不能在基于Webkit的浏览器中自动播放。这只发生在一些随机的页面上。到目前为止我还没有找到原因。我怀疑一些未关闭的标签或CMS编辑器创建的大量JS。
当前回答
在使用jQuery play()或DOM操作后，根据其他答案的建议，它仍然不能工作(视频不能自动播放)在Chrome for Android(版本56.0)。
根据developers.google.com上的这篇文章，从Chrome 53开始，如果视频被静音，浏览器会尊重自动播放选项。
因此，在视频标签中使用自动播放静音属性可以使视频在Chrome浏览器中自动播放。
摘自上述链接:
Muted autoplay for video is supported by Chrome for Android as of version 53. Playback will start automatically for a video element once it comes into view if both autoplay and muted are set[...] <video autoplay muted> <source src="video.webm" type="video/webm" /> <source src="video.mp4" type="video/mp4" /> </video> Muted autoplay is supported by Safari on iOS 10 and later. Autoplay, whether muted or not, is already supported on Android by Firefox and UC Browser: they do not block any kind of autoplay.
其他回答
一开始我只能播放所有可见的视频，但旧手机的表现不太好。现在我播放离窗口中心最近的视频，然后暂停其他视频。香草JS。你可以选择你喜欢的算法。
//slowLooper(playAllVisibleVideos);
slowLooper(playVideoClosestToCenter);
function isVideoPlaying(elem) {
if (elem.paused || elem.ended || elem.readyState < 2) {
return false;
} else {
return true;
}
}
function isScrolledIntoView(el) {
var elementTop = el.getBoundingClientRect().top;
var elementBottom = el.getBoundingClientRect().bottom;
var isVisible = elementTop < window.innerHeight && elementBottom >= 0;
return isVisible;
}
function playVideoClosestToCenter() {
var vids = document.querySelectorAll('video');
var smallestDistance = null;
var smallestDistanceI = null;
for (var i = 0; i < vids.length; i++) {
var el = vids[i];
var elementTop = el.getBoundingClientRect().top;
var elementBottom = el.getBoundingClientRect().bottom;
var elementCenter = (elementBottom + elementTop) / 2.0;
var windowCenter = window.innerHeight / 2.0;
var distance = Math.abs(windowCenter - elementCenter);
if (smallestDistance === null || distance < smallestDistance) {
smallestDistance = distance;
smallestDistanceI = i;
}
}
if (smallestDistanceI !== null) {
vids[smallestDistanceI].play();
for (var i = 0; i < vids.length; i++) {
if (i !== smallestDistanceI) {
vids[i].pause();
}
}
}
}
function playAllVisibleVideos(timestamp) {
// This fixes autoplay for safari
var vids = document.querySelectorAll('video');
for (var i = 0; i < vids.length; i++) {
if (isVideoPlaying(vids[i]) && !isScrolledIntoView(vids[i])) {
vids[i].pause();
}
if (!isVideoPlaying(vids[i]) && isScrolledIntoView(vids[i])) {
vids[i].play();
}
}
}
function slowLooper(cb) {
// Throttling requestAnimationFrame to a few fps so we don't waste cpu on this
// We could have listened to scroll+resize+load events which move elements
// but that would have been more complicated.
function repeats() {
cb();
setTimeout(function() {
window.requestAnimationFrame(repeats);
}, 200);
}
repeats();
}
试试这个:
<video width="320" height="240" autoplay muted>
<source src="video.mp4" type="video/mp4">
</video>
在使用jQuery play()或DOM操作后，根据其他答案的建议，它仍然不能工作(视频不能自动播放)在Chrome for Android(版本56.0)。
根据developers.google.com上的这篇文章，从Chrome 53开始，如果视频被静音，浏览器会尊重自动播放选项。
因此，在视频标签中使用自动播放静音属性可以使视频在Chrome浏览器中自动播放。
摘自上述链接:
Muted autoplay for video is supported by Chrome for Android as of version 53. Playback will start automatically for a video element once it comes into view if both autoplay and muted are set[...] <video autoplay muted> <source src="video.webm" type="video/webm" /> <source src="video.mp4" type="video/mp4" /> </video> Muted autoplay is supported by Safari on iOS 10 and later. Autoplay, whether muted or not, is already supported on Android by Firefox and UC Browser: they do not block any kind of autoplay.
在Safari iOS上没有任何效果，直到我添加了playsinline属性到视频中
<video onload='this.play()' src='the source' autoplay controls></video>
这对我很管用。
