当现有video播放器不能满足需求时,需要自己对video进行封装。
HLS(HTTP Live Streaming)由Apple提出的直播流协议。IOS和高版本Android都支持HLS。HLS主要由.m3u8和.ts两种播放文件。HLS具有高兼容性,高可扩展性,但会直播延时。HLS协议是将直播流分成一段一段的小段视频去下载播放的,所以假设列表里面的包含5个ts文件,每个ts文件包含5秒的视频内容,那么整体的延迟就是25秒。
RTMP(Real Time Messaging Protocol)是Macromedia开发的一套视频直播协议,现在属于Adobe。RTMP基于flash无法在IOS的浏览器里播放,但是实时性比HLS要好。
HTTP-FLV针对于FLV视频格式做的直播分发流,延时低。但移动端不支持。
结论:HTTP-FLV延时低,优先使用。若设备不支持HTTP-FLV,使用flv.js。若设备不支持flv.js,则使用HLS,但HLS延迟大。
/** 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, // 是否播放结束 showPoster: true, // 是否显示视屏封面 showLoading: false, // 加载中 currentTime: 0, // 当前播放位置 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 ); // 指定播放位置 this.videoPlayer.addEventListener("seeked", e => { }); // 缓冲 this.videoPlayer.addEventListener("waiting", e => { this.showLoading = true; }); // 播放结束 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,处理微信不能自动播放。但并不全部适用,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; } } }
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