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html5的video标签无法播放如何解决

发布时间:2023-07-18 11:30:36 所属栏目:教程 来源:转载
导读:   这篇“html5的video标签不能播放如何解决”文章的知识点大部分人都不太理解,所以小编给大家总结了以下内容,内容详细,步骤清晰,具有一定的借鉴价值,希望大家阅读完这篇文
  这篇“html5的video标签不能播放如何解决”文章的知识点大部分人都不太理解,所以小编给大家总结了以下内容,内容详细,步骤清晰,具有一定的借鉴价值,希望大家阅读完这篇文章能有所收获,下面我们一起来看看这篇“html5的video标签不能播放如何解决”文章吧。
 
  html5的video标签不能播放的解决办法:1、使用视频截图做一个播放按钮,占位视频原有位置;2、监听占位按钮的click事件,使用“video.play()”;3、把占位图和loading隐藏即可。
 
  h6的video标签 在UIwebview中无法播放,Safari可以,
 
  某些手机可以某些手机不行
 
  和video.js实现一致,不嫌弃再引一个兼容包,想有更好体验的
 
  建议使用https://videojs.com/
 
  想自己体验一把原理,可以在文章最后拷贝demo代码运行
 
  传统的方法在HTML中写video标签就可以点击播放啦
 
  <video src="xxx.mp4" controls poster="url?vframe/jpg/offset/5" preload="load"></video>
 
  // ?vframe/jpg/offset/5  这个是七牛接口,取截图用的,5就是第5秒截图
 
  BUT,这么写在IOS 10.3.2/3 11.x.x. iphone 6/6p 7等等几个测试机中就不行,但是在个人手机上又可以,有的手机可以有的手机不行。
 
  修改后:
 
  步骤1:使用视频截图再做一个播放按钮,占位视频原有位置
 
  步骤2: 监听占位按钮的click事件,使用video.play(),就可以看到视频有请求在加载了
 
  步骤3: 在加载中的视频都有一个promise可以拿到,then以后把占位图和loading隐藏就可以了
 
  tips:
 
  不同手机/系统会有不同的请求范围,一般都是分割成3-5个206请求。
 
  console.time("加载毫秒");可以看到加载时间,基本和Charles抓包看到的一致。
 
  不同手机/系统也会有不同的then表现有的是一点就给返回,有的是需要等视频全部加载完才返回
 
  视频DOM的属性可以拿到当前加载了多少,总量是多少,除一下就是百分比,具体属性可以看 > https://developer.mozilla.org/zh-CN/docs/Web/HTML/Element/video
 
  线上地址:http://m.soyoung.com/item/detail?type=0&sys=3&item_id=263&cityId=0
 
  demo代码(方便有些朋友,私信想直接拿走demo啦~)
 
  <!DOCTYPE html>
 
  <html data-dpr="1" style="font-size: 55px;">
 
      <head>
 
          <meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge,chrome=1"/>
 
          <title>视频DEMO</title>
 
      </head>
 
      <body style="font-size: 24px;">
 
          <style>
 
              html,body,video{
 
                  margin: 0;
 
                  padding: 0;
 
              }
 
              .pub-swipe .media {
 
                  position: relative;
 
                  font-size: 0;
 
                  margin-bottom: 0.4rem;
 
              }
 
              .pub-swipe .media img,
 
              .pub-swipe .media video {
 
                  display: block;
 
                  margin: 0 auto;
 
                  width: 100%;
 
                  min-height: 4.667rem;
 
              }
 
              .pub-swipe .desc,
 
              .pub-swipe .media img {
 
                  margin-bottom: 0.267rem;
 
              }
 
              .pub-swipe .media video {
 
                  width: 100%;
 
                  height: 4.667rem;
 
              }
 
              .pub-swipe .media img.video-go {
 
                  width: 2.707rem;
 
                  height: 2.707rem;
 
                  min-height: 0;
 
                  position: absolute;
 
                  left: 50%;
 
                  margin-left: -.853rem;
 
                  top: 1.3rem;
 
                  z-index: 5;
 
              }
 
              .hide {
 
                  display: none !important;
 
              }
 
          </style>
 
          <div class="pub-swipe">
 
              <p class="media">
 
                  <i class="video-i" data-src="http://videosy.soyoung.com/item-263.MP4">
 
                      <img src="http://videosy.soyoung.com/item-263.MP4?vframe/jpg/offset/5"/>
 
                      <img class="video-go" src="https://mstatic.soyoung.com/m/static/img/product/video_go.png"/>
 
                  </i>
 
              </p>
 
          </div>
 
          <script>
 
              /**
 
           * 视频加载兼容处理
 
           */
 
              var isIPhone = window.navigator.appVersion.match(/iphone/gi);
 
              var creat_video = function () {
 
                  var _video = document.getElementsByClassName('video-i');
 
                  if (_video.length > 0) {
 
                      for (var i = 0; i < _video.length; i++) {
 
                          var _that = _video[i];
 
                          _that.addEventListener('click', function (e) {
 
                              var _this = e.currentTarget,
 
                                  _videoUrl = _this.getAttribute('data-src'),
 
                                  _img = _this.children[0].getAttribute('src'),
 
                                  _dom = document.createElement('video'),
 
                                  _autoPlayAllowed = true,
 
                                  _loading = document.createElement('div'),
 
                                  _p,
 
                                  _process = document.createElement('i');
 
                              _noSound = document.createElement('em');
 
                              if (_this.getAttribute('data-video')) {
 
                                  var _video = _this.parentNode.querySelectorAll('video');
 
                                  var _noSound = _this.parentNode.querySelectorAll('.no-sound');
 
                                  if (_video.length > 0) {
 
                                      _dom = _video[0];
 
                                      // if (_dom.ended) {
 
                                      if (isIPhone) {
 
                                          //修改Ios11状态不准,视频无法播放的问题
 
                                          if (_dom.src.indexOf('random') > -1) {
 
                                              _dom.src = _dom.src.split('random=')[0] + 'random=' + _dom.src.split('random=')[1] + 1;
 
                                          } else {
 
                                              _dom.src = _dom.src + '?random=' + Math.floor(Math.random() * (100 - 10 + 1) + 10);
 
                                          }
 
                                      }
 
                                      _noSound[0].classList.remove('hide');
 
                                      _dom.play();
 
                                      _this.classList.add('hide');
 
                                      _dom.classList.remove('hide');
 
                                      // }
 
                                  }
 
                                  return;
 
                              }
 
                              _this.setAttribute('data-video', '1');
 
                              _process.setAttribute('class', 'vjs-process');
 
                              _process.innerHTML = '加载中...';
 
                              _loading.setAttribute('class', 'vjs-loading-spinner');
 
                              _dom.setAttribute('src', _videoUrl);
 
                              _dom.setAttribute('controls', 'controls');
 
                              _dom.setAttribute('autoPlay', 'false');
 
                              // _dom.setAttribute('x5-video-player-type', 'h6');
 
                              _this.parentNode.appendChild(_loading);
 
                              _this.parentNode.appendChild(_process);
 
                              _this.parentNode.classList.add('vjs-waiting');
 
                              _noSound.setAttribute('class', 'no-sound');
 
                              _noSound.innerHTML = '无声';
 
                              // _dom.setAttribute('webkit-playsinline', 'webkit-playsinline');
 
                              // _dom.setAttribute('playsinline', 'playsinline');
 
                              _dom.setAttribute('poster', _img);
 
                              _p = _dom.play();
 
                              console.time("加载毫秒");
 
                              var _dom_buffered_promise = function () {
 
                                  var _end = _dom.buffered.end(0);
 
                                  var _duration = _dom.duration;
 
                                  var _a = Math.round(_end / _duration * 100);
 
                                  _process.innerHTML = _a + '%';
 
                                  console.log(_end + ' ' + _duration)
 
                                  if (_a < 10) {
 
                                      setTimeout(_dom_buffered, 200);
 
                                  } else {
 
                                      _dom_buffered();
 
                                  }
 
                              };
 
                              var _dom_buffered = function () {
 
                                  _this.parentNode.classList.remove('vjs-waiting');
 
                                  _this.classList.add('hide');
 
                                  _process.classList.add('hide');
 
                                  _this.parentNode.appendChild(_dom);
 
                                  _this.parentNode.appendChild(_noSound);
 
                                  _dom.addEventListener('ended', function () {
 
                                      _dom.classList.add('hide');
 
                                      _this.classList.remove('hide');
 
                                      _noSound.classList.add('hide');
 
                                  });
 
                                  _dom.currentTime = 0;
 
                                  console.timeEnd("加载毫秒");
 
                              };
 
                              if (_p instanceof Promise) {
 
                                  _p.catch(function (error) {
 
                                      console.log(error.message);
 
                                      if (error.name === 'NotAllowedError') {
 
                                          _autoPlayAllowed = false;
 
                                      }
 
                                  }).then(function (e) {
 
                                      if (_autoPlayAllowed) {
 
                                          _dom_buffered_promise();
 
                                      }
 
                                  });
 
                              } else {
 
                                  //ios8-9拿不到promise需要给个延时处理
 
                                  setTimeout(function () {
 
                                      _dom_buffered();
 
                                  }, 4000);
 
                              }
 
                          });
 
                      }
 
                  }
 
              };
 
              new creat_video();
 
          </script>
 
      </body>
 
  </html>
 

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