Question

我想知道在视频缓冲时是否有办法显示.gif文件。

我正在使用HTML5视频标签，其中有一种方法可以检测视频何时进行缓冲，如果没有，是否有替代方案？

我看过：

但是我不认为这会帮助我...因为我不知道NetStream是什么或者actionscript-3是什么。

HTML：

<div id="popup-box" class="popupInfo">

            <img src="button/loading.gif" id="loadingGif" />

            <video src="fragmenten/real_schade.mp4" controls="controls" preload="auto" id="video" onclick="this.play();">

                    Your browser doesn't support the video element.

            </video>

            <p class="buttons">
                <a href="http://www.reaal.nl/verzekering/autoverzekering/#routechecker" target="_blank" id="place_Holder" class="button btn1">Meer informatie</a>
                <a href="http://www.reaal.nl/verzekering/autoverzekering/#basisdekking"  target="_blank" id="place_Holder1" class="button licht hoverbtn2">Direct afsluiten</a>
            </p>

            <img src="button/sluit.png" class="close">

        </div>

Answer 1

您可以使用视频元素上的onwaiting事件处理程序在视频开始缓冲时显示图像，并在视频恢复时显示onplaying事件处理程序（比较video element events）

video.onwaiting = function(){
    showPlaceholder(placeholder, this);
};
video.onplaying = function(){
    hidePlaceholder(placeholder, this);
};

我创建了一个小fiddle，您可以在其中了解如何操作（请注意，我通过代码模拟了1秒后的缓冲）。

Answer 2

我知道这个帖子真的很老但是我很难做到这一点，我花了好几天才找到如何做到这一点并使其全部正常运行所以我想为未来的用户提供帮助我是。

我重新制作了上面的小提琴并使其适用于超过1个视频并且还添加了一个css加载器，因为它会使它更快而不是必须下载gif。所以它现在效果更好，可扩展，更易于使用。我还删除了上面帖子中链接的前一个Js Fiddle中的延迟。要扩展它，您只需复制javascript的一部分并将标记更改为唯一。这是我的js Jsfiddle

如果您希望使用Gif而不是css加载程序，请执行以下操作：

更改这些行：

<div id="placeholder_1" class="placeholder"><div class="loader">Loading...</div></div>

对此：

<div id="placeholder_1" class="placeholder"><img src="https://i.imgur.com/OirdkJp.gif"></div>

如何工作是Javascript检查视频是否正在缓冲，如果它正在缓冲，则javascript将调用此html行<div id="placeholder_1" class="placeholder">，然后该html行将调用css加载器进行显示。我没有制作装载机，我是从Here

获得的

要展开，请执行以下操作：

复制下面的代码并将所有这些标签更改为唯一的名称。对此行执行相同的操作：<div id="placeholder_1" class="placeholder">同时为您的视频添加一个ID，例如您使用js标记的相同编号：id="video_1"（基本上将1更改为另一个数字）如果您有麻烦然后阅读本文底部的完整代码以获得更多帮助：

标签：

video_1
placeholder_1

代码：

＆＃13;

var video = document.getElementById("video_1");
var placeholder = document.getElementById("placeholder_1");
placeholder_1.style.top = video_1.offsetTop + "px";
placeholder_1.style.left = video_1.offsetLeft + "px";

video_1.onwaiting = function() {
  showPlaceholder(placeholder_1, this);
};
video_1.onplaying = function() {
  hidePlaceholder(placeholder_1, this);
};

function showPlaceholder(img, vid) {
  img.style.height = vid.scrollHeight + "px";
  img.style.width = vid.scrollWidth + "px";
  img.style.display = "block";
}

function hidePlaceholder(img, vid) {
  img.style.display = "none";
}

＆＃13;

以下是完成的代码：

＆＃13;

//Video one.

var video = document.getElementById("video_1");
var placeholder = document.getElementById("placeholder_1");
placeholder_1.style.top = video_1.offsetTop + "px";
placeholder_1.style.left = video_1.offsetLeft + "px";

video_1.onwaiting = function() {
  showPlaceholder(placeholder_1, this);
};
video_1.onplaying = function() {
  hidePlaceholder(placeholder_1, this);
};

function showPlaceholder(img, vid) {
  img.style.height = vid.scrollHeight + "px";
  img.style.width = vid.scrollWidth + "px";
  img.style.display = "block";
}

function hidePlaceholder(img, vid) {
  img.style.display = "none";
}


//Video two.

var video = document.getElementById("video_2");
var placeholder = document.getElementById("placeholder_2");
placeholder_2.style.top = video_2.offsetTop + "px";
placeholder_2.style.left = video_2.offsetLeft + "px";

video_2.onwaiting = function() {
  showPlaceholder(placeholder_2, this);
};
video_2.onplaying = function() {
  hidePlaceholder(placeholder_2, this);
};

function showPlaceholder(img, vid) {
  img.style.height = vid.scrollHeight + "px";
  img.style.width = vid.scrollWidth + "px";
  img.style.display = "block";
}

function hidePlaceholder(img, vid) {
  img.style.display = "none";
}

//Video three,

var video = document.getElementById("video_3");
var placeholder = document.getElementById("placeholder_3");
placeholder_3.style.top = video_3.offsetTop + "px";
placeholder_3.style.left = video_3.offsetLeft + "px";

video_3.onwaiting = function() {
  showPlaceholder(placeholder_3, this);
};
video_3.onplaying = function() {
  hidePlaceholder(placeholder_3, this);
};

function showPlaceholder(img, vid) {
  img.style.height = vid.scrollHeight + "px";
  img.style.width = vid.scrollWidth + "px";
  img.style.display = "block";
}

function hidePlaceholder(img, vid) {
  img.style.display = "none";
}

//Video four.

var video = document.getElementById("video_4");
var placeholder = document.getElementById("placeholder_4");
placeholder_4.style.top = video_4.offsetTop + "px";
placeholder_4.style.left = video_4.offsetLeft + "px";

video_4.onwaiting = function() {
  showPlaceholder(placeholder_4, this);
};
video_4.onplaying = function() {
  hidePlaceholder(placeholder_4, this);
};

function showPlaceholder(img, vid) {
  img.style.height = vid.scrollHeight + "px";
  img.style.width = vid.scrollWidth + "px";
  img.style.display = "block";
}

function hidePlaceholder(img, vid) {
  img.style.display = "none";
}

＆＃13;

.placeholder {
  display: none;
  position: absolute;
  background-size: cover;
  text-align: center;
  float: left;
  z-index: 300000;
}

.loader,
.loader:before,
.loader:after {
  background: #ff8000;
  -webkit-animation: load1 1s infinite ease-in-out;
  animation: load1 1s infinite ease-in-out;
  width: 1em;
  height: 4em;
}

.loader {
  color: #ff8000;
  text-indent: -9999em;
  margin: 88px auto;
  position: relative;
  font-size: 11px;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-animation-delay: -0.16s;
  animation-delay: -0.16s;
}

.loader:before,
.loader:after {
  position: absolute;
  top: 0;
  content: '';
}

.loader:before {
  left: -1.5em;
  -webkit-animation-delay: -0.32s;
  animation-delay: -0.32s;
}

.loader:after {
  left: 1.5em;
}

@-webkit-keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}

@keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}

＆＃13;

<video id="video_1" controls preload="none">
  <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" />
</video>

<div id="placeholder_1" class="placeholder">
  <div class="loader">Loading...</div>
</div>

<video id="video_2" controls preload="none">
  <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" />
</video>

<div id="placeholder_2" class="placeholder">
  <div class="loader">Loading...</div>
</div>

<video id="video_3" controls preload="none">
  <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" />
</video>

<div id="placeholder_3" class="placeholder">
  <div class="loader">Loading...</div>
</div>

<video id="video_4" controls preload="none">
  <source src="http://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4" />
</video>

<div id="placeholder_4" class="placeholder">
  <div class="loader">Loading...</div>
</div>

＆＃13;

检测视频何时缓冲，如果是，则显示gif

2 个答案: