123456
3 years ago
2 changed files with 206 additions and 3 deletions
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<template> |
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<div class="m-video" :class="{ 'u-video-hover': !hidden }" style="position: relative;top: 30px;left: 20px;" :style="`width: ${width}px; height: ${height}px;`"> |
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<video ref="veo" :style="`object-fit: ${zoom};`" :src="src" :poster="veoPoster" :width="width" :height="height" |
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:autoplay="autoplay" :controls="!originPlay && controls" :loop="loop" :muted="autoplay || muted" |
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:preload="preload" crossorigin="anonymous" @loadeddata="poster ? () => false : getPoster()" |
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@pause="showPlay ? onPause() : () => false" @playing="showPlay ? onPlaying() : () => false" |
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@click.prevent.once="onPlay" v-bind="$attrs"> |
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您的浏览器不支持video标签。 |
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</video> |
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<svg v-show="originPlay || showPlay" class="u-play" :class="{ 'hidden': hidden }" |
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:style="`width: ${playWidth}px; height: ${playWidth}px;`" viewBox="0 0 24 24"> |
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" |
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d="M4.75 6.75C4.75 5.64543 5.64543 4.75 6.75 4.75H17.25C18.3546 4.75 19.25 5.64543 19.25 6.75V17.25C19.25 18.3546 18.3546 19.25 17.25 19.25H6.75C5.64543 19.25 4.75 18.3546 4.75 17.25V6.75Z"> |
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</path> |
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M15.25 12L9.75 8.75V15.25L15.25 12Z"> |
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</path> |
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</svg> |
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</div> |
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</template> |
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<script> |
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export default { |
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name: 'Video', |
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props: { |
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src: { // 视频文件url，必传，支持网络地址 https 和相对地址 require('@/assets/files/Bao.mp4') |
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type: String, |
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required: true, |
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default: '' |
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}, |
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poster: { // 视频封面url，支持网络地址 https 和相对地址 require('@/assets/images/Bao.jpg') |
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type: String, |
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default: '' |
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}, |
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second: { // 在未设置封面时，自动截取视频第 second 秒对应帧作为视频封面 |
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type: Number, |
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default: 0.5 |
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}, |
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width: { // 视频播放器宽度 |
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type: Number, |
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default: 320 |
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}, |
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height: { // 视频播放器高度 |
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type: Number, |
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default: 180 |
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}, |
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/* |
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参考 MDN 自动播放指南：https://developer.mozilla.org/zh-CN/docs/Web/Media/Autoplay_guide |
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Autoplay 功能 |
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据新政策，媒体内容将在满足以下至少一个的条件下自动播放： |
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1.音频被静音或其音量设置为 0 |
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2.用户和网页已有交互行为（包括点击、触摸、按下某个键等等） |
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3.网站已被列入白名单；如果浏览器确定用户经常与媒体互动，这可能会自动发生，也可能通过首选项或其他用户界面功能手动发生 |
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4.自动播放策略应用到<iframe>或者其文档上 |
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autoplay：由于目前在最新版的Chrome浏览器（以及所有以Chromium为内核的浏览器）中， |
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已不再允许自动播放音频和视频。就算你为video或audio标签设置了autoplay属性也一样不能自动播放！ |
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解决方法：设置视频 autoplay 时，视频必须设置为静音 muted: true 即可实现自动播放， |
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然后用户可以使用控制栏开启声音，类似某宝商品自动播放的宣传视频逻辑 |
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*/ |
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autoplay: { // 视频就绪后是否马上播放 |
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type: Boolean, |
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default: false |
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}, |
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controls: { // 是否向用户显示控件，比如进度条，全屏 |
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type: Boolean, |
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default: true |
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}, |
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loop: { // 视频播放完成后，是否循环播放 |
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type: Boolean, |
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default: false |
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}, |
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muted: { // 是否静音 |
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type: Boolean, |
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default: false |
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}, |
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preload: { // 是否在页面加载后载入视频，如果设置了autoplay属性，则preload将被忽略； |
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type: String, |
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default: 'auto' // auto:一旦页面加载，则开始加载视频; metadata:当页面加载后仅加载视频的元数据 none:页面加载后不应加载视频 |
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}, |
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showPlay: { // 播放暂停时是否显示播放器中间的暂停图标 |
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type: Boolean, |
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default: true |
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}, |
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playWidth: { // 中间播放暂停按钮的边长 |
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type: Number, |
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default: 96 |
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}, |
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zoom: { // video的poster默认图片和视频内容缩放规则 |
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type: String, |
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default: 'contain' // none:(默认)保存原有内容，不进行缩放; fill:不保持原有比例，内容拉伸填充整个内容容器; contain:保存原有比例，内容以包含方式缩放; cover:保存原有比例，内容以覆盖方式缩放 |
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} |
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}, |
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data() { |
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return { |
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veoPoster: this.poster, |
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originPlay: true, |
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hidden: false |
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} |
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}, |
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mounted() { |
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if (this.autoplay) { |
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this.hidden = true |
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this.originPlay = false |
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} |
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/* |
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自定义设置播放速度，经测试： |
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在vue2中需设置：this.$refs.veo.playbackRate = 2 |
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在vue3中需设置：veo.value.defaultPlaybackRate = 2 |
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*/ |
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// this.$refs.veo.playbackRate = 2 |
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}, |
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methods: { |
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/* |
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loadeddata 事件在媒体当前播放位置的视频帧（通常是第一帧）加载完成后触发 |
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preload为none时不会触发 |
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*/ |
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getPoster() { // 在未设置封面时，自动获取视频0.5s对应帧作为视频封面 |
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// 由于不少视频第一帧为黑屏，故设置视频开始播放时间为0.5s，即取该时刻帧作为封面图 |
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this.$refs.veo.currentTime = this.second |
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// 创建canvas元素 |
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const canvas = document.createElement('canvas') |
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const ctx = canvas.getContext('2d') |
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// canvas画图 |
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canvas.width = this.$refs.veo.videoWidth |
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canvas.height = this.$refs.veo.videoHeight |
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ctx.drawImage(this.$refs.veo, 0, 0, canvas.width, canvas.height) |
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// 把canvas转成base64编码格式 |
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this.veoPoster = canvas.toDataURL('image/png') |
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}, |
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onPlay() { |
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if (this.originPlay) { |
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this.$refs.veo.currentTime = 0 |
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this.originPlay = false |
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} |
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if (this.autoplay) { |
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this.$refs.veo.pause() |
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} else { |
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this.hidden = true |
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this.$refs.veo.play() |
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} |
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}, |
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onPause() { |
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this.hidden = false |
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}, |
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onPlaying() { |
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this.hidden = true |
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} |
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} |
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} |
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</script> |
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<style lang="less" scoped> |
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* { |
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box-sizing: border-box; |
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margin: 0; |
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padding: 0; |
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} |
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|
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.m-video { |
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display: inline-block; |
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position: relative; |
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background: #000; |
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cursor: pointer; |
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|
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.u-play { |
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position: absolute; |
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top: 0; |
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right: 0; |
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bottom: 0; |
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left: 0; |
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margin: auto; |
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fill: none; |
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color: #FFF; |
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pointer-events: none; |
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opacity: 0.7; |
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transition: opacity .3s; |
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|
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path { |
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stroke: #FFF; |
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} |
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} |
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|
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.hidden { |
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opacity: 0; |
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} |
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} |
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|
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.u-video-hover { |
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&:hover { |
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.u-play { |
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opacity: 0.9; |
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} |
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} |
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} |
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</style> |
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