diff --git a/demo/index.html b/demo/index.html
index eb391f9..e72d47d 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -113,10 +113,12 @@
             video: {
                 quality: [{
                     name: 'HD',
-                    url: 'http://devtest.qiniudn.com/若能绽放光芒.mp4?1'
+                    url: 'http://devtest.qiniudn.com/若能绽放光芒5.m3u8',
+                    type: 'hls'
                 }, {
                     name: 'SD',
-                    url: 'http://devtest.qiniudn.com/若能绽放光芒.mp4?2'
+                    url: 'http://devtest.qiniudn.com/若能绽放光芒.mp4',
+                    type: 'normal'
                 }],
                 defaultQuality: 0,
                 pic: 'http://devtest.qiniudn.com/若能绽放光芒.png'
@@ -137,6 +139,15 @@
                 }
             });
         </script>
+        <div id="dplayer8"></div>
+        <script>
+            var dp8 = new DPlayer({
+                element: document.getElementById('dplayer8')
+            });
+            var hls = new Hls();
+            hls.loadSource('http://devtest.qiniudn.com/若能绽放光芒5.m3u8');
+            hls.attachMedia(dp8.video);
+        </script>
     </div>
 
     <h2 id="flv-support">FLV support</h2>
@@ -151,6 +162,18 @@
                 }
             });
         </script>
+        <div id="dplayer7"></div>
+        <script>
+            var dp7 = new DPlayer({
+                element: document.getElementById('dplayer7')
+            });
+            var flvPlayer = flvjs.createPlayer({
+                type: 'flv',
+                url: 'http://devtest.qiniudn.com/【微小微】玖月奇迹－踩踩踩.flv'
+            });
+            flvPlayer.attachMediaElement(dp7.video);
+            flvPlayer.load();
+        </script>
     </div>
 
     <h2 id="bilibili-video-and-danmaku">Bilibili video and danmaku</h2>
diff --git a/src/DPlayer.js b/src/DPlayer.js
index f15ac3d..2ce416a 100644
--- a/src/DPlayer.js
+++ b/src/DPlayer.js
@@ -792,7 +792,7 @@ class DPlayer {
             });
         }
 
-        this.initVideo();
+        this.initVideo(this.video, this.quality && this.quality.type || this.option.video.type);
 
         index++;
     }
@@ -941,42 +941,35 @@ class DPlayer {
         }
     }
 
-    initVideo () {
+    initVideo (video, type) {
+        this.type = type;
+        if (this.type === 'auto') {
+            if (/m3u8(#|\?|$)/i.exec(video.src)) {
+                this.type = 'hls';
+            }
+            else if (/.flv(#|\?|$)/i.exec(video.src)) {
+                this.type = 'flv';
+            }
+            else {
+                this.type = 'normal';
+            }
+        }
+
         // Support HTTP Live Streaming
-        let enablehls;
-        if (this.option.video.type === 'auto') {
-            enablehls = /m3u8(#|\?|$)/i.exec(this.video.src);
-        }
-        else if (this.option.video.type === 'hls') {
-            enablehls = true;
-        }
-        else {
-            enablehls = false;
-        }
-        if (enablehls && Hls.isSupported()) {
+        if (this.type === 'hls' && Hls.isSupported()) {
             // this.element.getElementsByClassName('dplayer-time')[0].style.display = 'none';
             const hls = new Hls();
-            hls.loadSource(this.video.src);
-            hls.attachMedia(this.video);
+            hls.loadSource(video.src);
+            hls.attachMedia(video);
         }
 
         // Support FLV
-        let enableflv;
-        if (this.option.video.type === 'auto') {
-            enableflv = /.flv(#|\?|$)/i.exec(this.video.src);
-        }
-        else if (this.option.video.type === 'flv') {
-            enableflv = true;
-        }
-        else {
-            enableflv = false;
-        }
-        if (enableflv && flvjs.isSupported()) {
+        if (this.type === 'flv'  && flvjs.isSupported()) {
             const flvPlayer = flvjs.createPlayer({
                 type: 'flv',
-                url: this.option.video.url
+                url: video.src
             });
-            flvPlayer.attachMediaElement(this.video);
+            flvPlayer.attachMediaElement(video);
             flvPlayer.load();
         }
 
@@ -984,32 +977,32 @@ class DPlayer {
          * video events
          */
         // show video time: the metadata has loaded or changed
-        this.video.addEventListener('durationchange', () => {
-            if (this.video.duration !== 1) {           // compatibility: Android browsers will output 1 at first
-                this.element.getElementsByClassName('dplayer-dtime')[0].innerHTML = utils.secondToTime(this.video.duration);
+        video.addEventListener('durationchange', () => {
+            if (video.duration !== 1) {           // compatibility: Android browsers will output 1 at first
+                this.element.getElementsByClassName('dplayer-dtime')[0].innerHTML = utils.secondToTime(video.duration);
             }
         });
 
         // show video loaded bar: to inform interested parties of progress downloading the media
-        this.video.addEventListener('progress', () => {
-            const percentage = this.video.buffered.length ? this.video.buffered.end(this.video.buffered.length - 1) / this.video.duration : 0;
+        video.addEventListener('progress', () => {
+            const percentage = video.buffered.length ? video.buffered.end(video.buffered.length - 1) / video.duration : 0;
             this.updateBar('loaded', percentage, 'width');
         });
 
         // video download error: an error occurs
-        this.video.addEventListener('error', () => {
+        video.addEventListener('error', () => {
             this.tran && this.notice && this.notice(this.tran('This video fails to load'), -1);
             this.trigger && this.trigger('pause');
         });
 
         // video can play: enough data is available that the media can be played
-        this.video.addEventListener('canplay', () => {
+        video.addEventListener('canplay', () => {
             this.trigger('canplay');
         });
 
         // video end
         this.ended = false;
-        this.video.addEventListener('ended', () => {
+        video.addEventListener('ended', () => {
             this.updateBar('played', 1, 'width');
             if (!this.loop) {
                 this.ended = true;
@@ -1018,20 +1011,20 @@ class DPlayer {
             }
             else {
                 this.seek(0);
-                this.video.play();
+                video.play();
             }
             if (this.danmaku) {
                 this.danmaku.danIndex = 0;
             }
         });
 
-        this.video.addEventListener('play', () => {
+        video.addEventListener('play', () => {
             if (this.paused) {
                 this.play();
             }
         });
 
-        this.video.addEventListener('pause', () => {
+        video.addEventListener('pause', () => {
             if (!this.paused) {
                 this.pause();
             }
@@ -1059,7 +1052,7 @@ class DPlayer {
         parent.insertBefore(videoEle, parent.getElementsByTagName('div')[0]);
         this.prevVideo = this.video;
         this.video = videoEle;
-        this.initVideo();
+        this.initVideo(this.video, this.quality.type || this.option.video.type);
         this.seek(this.prevVideo.currentTime);
         this.notice(`${this.tran('Switching to')} ${this.quality.name} ${this.tran('quality')}`, -1);
         this.video.addEventListener('canplay', () => {
diff --git a/src/DPlayer.scss b/src/DPlayer.scss
index 896fbba..9394e20 100644
--- a/src/DPlayer.scss
+++ b/src/DPlayer.scss
@@ -376,10 +376,8 @@
 
             .dplayer-bar-preview {
                 position: absolute;
-                // width: 160px;
-                // height: 80px;
-                // top: -80px;
                 background: #fff;
+                pointer-events: none;
 
                 &.hidden {
                     visibility: hidden;
@@ -391,6 +389,7 @@
                 width: 100%;
                 height: 100%;
                 z-index: 1;
+                pointer-events: none;
             }
 
             .dplayer-bar-time {
@@ -412,6 +411,7 @@
                 word-wrap: normal;
                 word-break: normal;
                 z-index: 2;
+                pointer-events: none;
             }
 
             .dplayer-bar {
diff --git a/src/html.js b/src/html.js
index 124e559..c01957d 100644
--- a/src/html.js
+++ b/src/html.js
@@ -3,9 +3,7 @@ const svg = require('./svg.js');
 const html = {
     main: (option, index, tran) => {
         let videos = ``;
-        for (let i = 0; i < option.video.url.length; i++) {
-            videos += html.video(i === 0, option.video.pic, option.screenshot, option.video.url.length ? 'metadata' : option.preload, option.video.url[i]);
-        }
+        videos += html.video(true, option.video.pic, option.screenshot, option.preload, option.video.url);
         return `
         <div class="dplayer-mask"></div>
         <div class="dplayer-video-wrap">
diff --git a/src/option.js b/src/option.js
index b63e3c0..14feec2 100644
--- a/src/option.js
+++ b/src/option.js
@@ -19,6 +19,7 @@ module.exports = (option) => {
         preload: 'auto',
         volume: '0.7',
         apiBackend: defaultApiBackend,
+        video: {},
         contextmenu: [
             {
                 text: '关于作者',
@@ -39,9 +40,6 @@ module.exports = (option) => {
             option[defaultKey] = defaultOption[defaultKey];
         }
     }
-    if (Object.prototype.toString.call(option.video.url) !== '[object Array]') {
-        option.video.url = [option.video.url];
-    }
     if (option.video && !option.video.hasOwnProperty('type')) {
         option.video.type = 'auto';
     }