当现有video播放器不能满足需要时,须要本人对video进行封装。
video事件
loadstart
: 在视频开始加载时触发,给currentTime赋值(历史播放记录或0)。durationchange
: 元信息已载入或已扭转,视频的长度产生了扭转。获取到视频长度(duration,并给currentTime赋值(历史播放记录或0))。playing
: 在视频开始播放时触发(不论是首次播放、在暂停后复原、或是在完结后从新开始)。pause
: 播放暂停时触发。timeupdate
: currentTime扭转, 更新播放进度。解决播放进度条seeked
: 指定播放地位waiting
: 缓冲ended
: 播放完结, 重置状态WeixinJSBridgeReady
: 在微信中应用video,须要监听weixinJSBridgeReady事件, 在回调函数里执行play()命令。
直播协定
HLS(HTTP Live Streaming)
由Apple提出的直播流协定。IOS和高版本Android都反对HLS。HLS次要由.m3u8和.ts两种播放文件。HLS具备高兼容性,高可扩展性,但会直播延时。HLS协定是将直播流分成一段一段的小段视频去下载播放的,所以假如列表外面的蕴含5个ts文件,每个ts文件蕴含5秒的视频内容,那么整体的提早就是25秒。RTMP(Real Time Messaging Protocol)
是Macromedia开发的一套视频直播协定,当初属于Adobe。RTMP基于flash无奈在IOS的浏览器里播放,然而实时性比HLS要好。HTTP-FLV
针对于FLV
视频格式做的直播散发流,延时低。但挪动端不反对。
论断:HTTP-FLV
延时低,优先应用。若设施不反对HTTP-FLV,应用flv.js
。若设施不反对flv.js,则应用HLS,但HLS提早大。
封装video
/** HTML **/
<div class="video">
<!-- video player -->
<video
class="video__player"
ref="videoPlayer"
preload="auto"
:autoplay="options.autoplay"
:muted="options.muted"
webkit-playsinline="true"
playsinline="true"
x-webkit-airplay="allow"
x5-video-player-type="h5-page"
x5-video-orientation="portraint"
style="object-fit:cover;"
>
<source :src="options.src" />
</video>
<!-- video poster -->
<div
v-show="showPoster"
class="video__poster"
:style="{'background-image': 'url(' + options.pic + ')'}"
></div>
<!-- video loading -->
<div v-show="showLoading" class="video__Loading">
<span class="video__Loading-icon"></span>
</div>
<!-- video pause -->
<div @click="handleVideoPlay" class="video__pause">
<span v-show="!videoPlay" class="video__pause-icon"></span>
</div>
</div>
/** js**/
props: {
options: {
type: Object,
default: () => {}
}
},
data() {
return {
videoPlay: false, // 是否正在播放
videoEnd: false, // 是否播放完结
showPoster: true, // 是否显示视屏封面
showLoading: false, // 加载中
currentTime: 0, // 以后播放地位
currentVideo: {
duration: this.options.duration
},
}
},
mounted() {
this.videoPlayer = this.$refs.videoPlayer;
this.videoPlayer.currentTime = 0;
this.videoPlayer.addEventListener("loadstart", e => {
this.videoPlayer.currentTime = (this.options.playProcess > 0) ? this.options.playProcess : 0;
});
// 获取到视频长度
this.videoPlayer.addEventListener("durationchange", e => {
this.currentVideo.duration = this.videoPlayer.duration;
// 存在播放历史记录
this.videoPlayer.currentTime = (this.options.playProcess > 0) ? this.options.playProcess : 0;
});
this.videoPlayer.addEventListener("playing", e => {
this.showPoster = false;
this.videoPlay = true;
this.showLoading = false;
this.videoEnd = false;
});
// 暂停
this.videoPlayer.addEventListener("pause", () => {
this.videoPlay = false;
if (this.videoPlayer.currentTime < 0.1) {
this.showPoster = true;
}
this.showLoading = false;
});
// 播放进度更新
this.videoPlayer.addEventListener("timeupdate", e => {
this.currentTime = this.videoPlayer.currentTime;
},
false
);
// 指定播放地位
this.videoPlayer.addEventListener("seeked", e => {
});
// 缓冲
this.videoPlayer.addEventListener("waiting", e => {
this.showLoading = true;
});
// 播放完结
this.videoPlayer.addEventListener("ended", e => {
// 重置状态
this.videoPlay = false;
this.showPoster = true;
this.videoEnd = true;
this.currentTime = this.currentVideo.duration;
});
// 监听weixinJSBridgeReady事件,解决微信不能自动播放。但并不全副实用,加了暂停按钮,手动播放。
document.addEventListener('WeixinJSBridgeReady', () => {
this.videoPlayer.play();
}, false);
},
methods: {
handleVideoPlay() {
if (this.videoPlayer.paused) { // 播放
if(this.videoEnd) { // 重播
this.currentTime = 0;
this.videoPlayer.currentTime = 0;
}
this.videoPlayer.play();
this.videoPlay = true;
} else { // 暂停
this.videoPlayer.pause();
this.videoPlay = false;
}
}
}
[参考文章]:
- X5内核视频两种播放状态
- H5直播Video标签坑汇总
- H5直播入门(实践篇)
- 全面进阶 H5 直播
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