vue 背景视频，页面打开和刷新都不播放，但是跳转到其他页面在返回有背景视频的页面时，背景视频就会播放

Question

vue 背景视频，页面打开和刷新都不播放，但是跳转到其他页面在返回有背景视频的页面时，背景视频就会播放。
<template>

<div class="homepage-hero-module">
    <div class="video-container">
        <div :style="fixStyle" class="filter"></div>
        <video :style="fixStyle" autoplay loop class="fillWidth" v-on:canplay="canplay">
            <source src="http://img.tukuppt.com/video_show/2629112/00/02/76/5b8ceb9a5327e.mp4" type="video/mp4"/>
            浏览器不支持 video 标签，建议升级浏览器。
            <source src="PATH_TO_WEBM" type="video/webm"/>
            浏览器不支持 video 标签，建议升级浏览器。
        </video>
        <div class="poster hidden" v-if="!vedioCanPlay">
            <img :style="fixStyle" src="PATH_TO_JPEG" alt="">
        </div>
    </div>
</div>

</template>

<script>

export default {
    name: "home",
    data() {

        return {

            vedioCanPlay: false,

            fixStyle: ''

        }

    },

    methods: {

        canplay() {

            this.vedioCanPlay = true

        }

    },

    mounted: function() {

        window.onresize = () => {

            const windowWidth = document.body.clientWidth

            const windowHeight = document.body.clientHeight

            const windowAspectRatio = windowHeight / windowWidth

            let videoWidth

            let videoHeight

            if (windowAspectRatio < 0.5625) {

                videoWidth = windowWidth

                videoHeight = videoWidth * 0.5625

                this.fixStyle = {

                    height: windowWidth * 0.5625 + 'px',

                    width: windowWidth + 'px',

                    'margin-bottom': (windowHeight - videoHeight) / 2 + 'px',

                    'margin-left': 'initial'

                }

            } else {

                videoHeight = windowHeight

                videoWidth = videoHeight / 0.5625

                this.fixStyle = {

                    height: windowHeight + 'px',

                    width: windowHeight / 0.5625 + 'px',

                    'margin-left': (windowWidth - videoWidth) / 2 + 'px',

                    'margin-bottom': 'initial'

                }

            }

        }

        window.onresize()

    }
}

</script>

<style scoped>

.homepage-hero-module,

.video-container {

    position: relative;

    height: 100vh;

    overflow: hidden;

}

.video-container .poster img,

.video-container video {

    z-index: 0;

    position: absolute;

}

.video-container .filter {

    z-index: 1;

    position: absolute;

    background: rgba(0, 0, 0, 0.4);

}

</style>