el-upload上传视频获取视频宽高、时长信息

<el-upload
    :on-change="uploadVideoChange">
    <el-button size="small" type="primary">
        <i class="el-icon-upload" />点击上传
    </el-button>
</el-upload>

uploadVideoChange (file, fileList) {
    // 防止触发两次
    if (file.status !== 'ready') return
    const getVideoInfo = new Promise((resolve) => {
        const videoElement = document.createElement("video");
        videoElement.src = URL.createObjectURL(file.raw);
        videoElement.addEventListener("loadedmetadata", function () {
            resolve({
　　　　　　　　　 duration: videoElement.duration,
                height: videoElement.videoHeight,
                width: videoElement.videoWidth
            });
        });
    });
    getVideoInfo.then((videoInfo) => {
        console.log(videoInfo);
    })
}