<el-table-column label="我的视频" align="center" prop="signMp4" width="80px">
<template slot-scope="scope">
<span v-if="scope.row.signMp4!==null">
<el-button @click="signMp4DialogG">播放</el-button>
<el-dialog title="视频播放" :visible.sync="signMp4Dialog">
<div class="elDialog">
<video :src="scope.row.signMp4" controls width="100%" height="100%"></video>
</div>
</el-dialog>
</span>
<span v-else>暂无数据</span>
</template>
</el-table-column>
vue实现视频播放,数据都有,为什么一直是黑屏呢,求指导