我遇到了一个问题,在Safari中使用loop
属性的HTML5视频元素在视频结束和循环开始之间有明显的延迟。当视频到达结尾时,它会冻结片刻然后跳回到第一帧。我尝试了Chrome中的同一页面(尝试使用.mp4和.webm版本),但没有这个问题。有没有其他人注意到这一点?有没有办法让Safari视频在回到视频开头之前循环播放,而不是暂停播放?如何在Safari中循环html5 mp4视频时防止延迟?
我正在使用Wordpress以及Slick carousel jQuery plugin。
这是我的工作代码:
SASS
#home-slider {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: hidden;
margin-bottom: 0;
& > a {
display: block;
width: 100%;
height: 100%;
}
.slide {
height: 100vh;
position: relative;
background-repeat: no-repeat;
background-position: top center;
@include background-size(cover);
&.slick-active {
z-index: 8000;
}
@media only screen
and (max-width: 750px) {
.video-bg {
display: none;
z-index: -1;
video {
display: none;
}
}
}
.video-bg {
z-index: 5000;
position: absolute;
width: 100vw;
height: 100vh;
video {
position: absolute;
top: 50%;
left: 50%;
min-width: 100%;
min-height: 100%;
width: auto;
height: auto;
z-index: -100;
-ms-transform: translateX(-50%) translateY(-50%);
-moz-transform: translateX(-50%) translateY(-50%);
-webkit-transform: translateX(-50%) translateY(-50%);
transform: translateX(-50%) translateY(-50%);
}
}
}
}
HTML
<div class="slide" style="background-image: url('<?= $slide_bg['url']; ?>');">
<?php if(count($slide_video_bg) > 0) : ?>
<div class="video-bg">
<video playsinline muted loop poster="<?= $slide_bg['url']; ?>" preload="auto">
<source src="<?= $slide_video_bg['webm']['url']; ?>" type="video/webm">
<source src="<?= $slide_video_bg['mp4']['url']; ?>" type="video/mp4">
</video>
</div>
<?php endif; ?>
<a class="slide-link" data-video-title="<?= $post->post_title; ?>" data-vimeo-id="<?= $vimeo_id; ?>" data-video-client="<?= $video_client; ?>" data-video-director="<?= $video_director; ?>" data-video-description="<?= $video_description; ?>"></a>
<div class="slide-info">
<a class="mobile-play vimeo-link" data-video-slug="<?= $post->post_name; ?>" data-vimeo-id="<?= $vimeo_id; ?>" data-video-title="<?php the_title(); ?>" data-video-client="<?= $slide_client; ?>"></a>
<h3 class="slide-client"><a class="vimeo-link" data-video-slug="<?= $post->post_name; ?>" data-vimeo-id="<?= $vimeo_id; ?>" data-video-title="<?php the_title(); ?>" data-video-client="<?= $slide_client; ?>"><?= $slide_client; ?></a></h3>
<h3 class="slide-slash">/</h3>
<h2 class="slide-title"><a class="vimeo-link" data-video-slug="<?= $post->post_name; ?>" data-vimeo-id="<?= $vimeo_id; ?>" data-video-title="<?php the_title(); ?>" data-video-client="<?= $slide_client; ?>"><?php the_title(); ?></a></h2>
</div>
</div>
JS
var $lightbox = $('.lightbox'),
$slideLink = $('.slide-link'),
slideCount = $('.slide').length,
startSlide = Math.floor(Math.random() * slideCount),
urlHash = window.location.hash,
lastSlide = startSlide;
$homeSlider.slick({
adaptiveHeight: true,
arrows: false,
autoplay: true,
autoplaySpeed: 4000,
cssEase: "ease-in-out",
dots: true,
fade: false,
initialSlide: startSlide,
lazyLoad : 'progressive',
onBeforeChange: beforeSlickChange,
onAfterChange: afterSlickChange,
pauseOnHover: false,
speed: 800
});
initSlides();
function beforeSlickChange(slick, currentSlide, nextSlide) {
if(hasVideoBG(nextSlide) === true && isMobile(mobileQuery)=== false) {
if(nextSlide === 0) {
$homeSlider.find(".slick-cloned:eq(1) video").get(0).play();
}
if(nextSlide === (getSliderCount() - 1)) {
$homeSlider.find(".slick-cloned:eq(0) video").get(0).play();
}
if(getSlideVideoByIndex(nextSlide).paused) {
getSlideVideoByIndex(nextSlide).play();
lastSlide = currentSlide;
}
}
}
function afterSlickChange(slick, currentSlide) {
if(currentSlide === 0 && lastSlide != 1) {
var $slideVideo = $homeSlider.find(".slick-cloned:eq(1) video").get(0);
getSlideByIndex(currentSlide).find("video").get(0).currentTime = $slideVideo.currentTime
} else if(currentSlide === (getSliderCount - 1) && lastSlide != (getSliderCount - 2)) {
var $slideVideo = $homeSlider.find(".slick-cloned:eq(0) video").get(0);
getSlideByIndex(currentSlide).find("video").get(0).currentTime = $slideVideo.currentTime
}
getSlideVideoByIndex(lastSlide).pause();
}
在此先感谢。
啊,是的,抱歉。现在添加代码。我已经尝试了几个不同版本的MP4文件,并尝试重新导出一个手动制动器,这是网络优化,仍然没有运气。我认为你对缓冲可能是正确的,我现在要尝试这个解决方案!谢谢 – Hendeca
我从来没有真正知道究竟发生了什么,但我认为这是最有帮助的解释,在我看来适用于我的情况。 – Hendeca
Np。所有的理论,但那只是因为没有太多可以继续下去,你的问题不是我的意思,或者它是一个完美的问题,关于问题的问题没有太多的文件。有些问题是众所周知的,并没有多少人谈论它。你有没有解决它?如果是这样怎么样? –