element ui视频上传（已上线，拿去即用）

<template>
  <div class="editPage__video">
    <div class="title">视频设置</div>
    <div class="img__con">
      <el-upload
        class="avatar-uploader"
        :action="uploadImgUrl"
        :data="uploadImgData"
        :show-file-list="false"
        :on-success="handleAvatarSuccess"
        :before-upload="beforeAvatarUpload"
        :on-progress="uploadVideoProcess"
      >
        <video width="100%" v-if="imageUrl" controls="controls" :key="menuKey">
          <source :src="rightData.props.src" type="video/mp4" />
        </video>
        <!-- <img v-if="imageUrl" :src="imageUrl" class="avatar" /> -->
        <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        <el-progress
          v-if="videoFlag == true"
          type="line"
          :percentage="videoUploadPercent"
          style="margin-top: 30px"
        ></el-progress>
      </el-upload>
      <p>
        说明: 视频格式为mp4格式，每个视频大小不超过300m
      </p>
    </div>
  </div>
</template>

:on-progress="uploadVideoProcess"
<el-progress
  v-if="videoFlag == true"
   type="line"
   :percentage="videoUploadPercent"
   style="margin-top: 30px"
 ></el-progress>

data() {
    return {
      imageUrl: this.rightData.imageUrl,
      // 视频上传
      uploadImgUrl: `${process.env.VUE_APP_BASE_API}/common-server/aliFile/upLoadVideo`,
      uploadImgData: { busiName: 32 },
      // 应付多个组件的情况 记录当前组件的key值
      componentKey: null,
      menuKey: 1, // 用来强制刷新
      videoFlag: false,  // 进度条相关的
      videoUploadPercent: 0,  // 进度条相关的
    };
  },
  methods: {
    // 上传成功的函数
    handleAvatarSuccess(res, file) {
       // 进度条恢复到初始状态
      this.videoFlag = false;
      this.videoUploadPercent = 0;
      ++this.menuKey;
      // console.log(res)
      this.imageUrl = res.data.url;
      // 这里是向父级传值，不需要就去掉
      this.$emit("childRightFn", {
        ...this.rightData,
        ...{ imageUrl: this.imageUrl },
        ...{ props: { src: this.imageUrl } },
      });
    },
    beforeAvatarUpload(file) {
      //   file.type === "image/jpg" ||
      //   file.type === "image/png";
      const isMp4 = file.type === "video/mp4";
      // 限制文件最大不能超过 300M
      const isLt2M = file.size / 1024 / 1024 < 300;
      if (!isMp4) {
        this.$message.error("视频只能是mp4格式!");
      }
      if (!isLt2M) {
        this.$message.error("上传头像图片大小不能超过 300MB!");
      }
      return isMp4 && isLt2M;
    },
    //进度条
    uploadVideoProcess(event, file, fileList) {
      this.videoFlag = true;
      this.videoUploadPercent = parseInt(file.percentage);
    },
 }

<style lang="scss" scoped>
.editPage__video {
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409eff;
  }
  .avatar-uploader-icon {
    font-size: 16px;
    color: #8c939d;
    width: 350px;
    height: 30px;
    line-height: 30px;
    text-align: center;
  }
  .avatar {
    width: 350px;
    height: auto;
    display: block;
  }
  .title {
    font-size: 18px;
    margin-bottom: 20px;
  }
  .img__con {
    .el-button {
      width: 100%;
      margin: 10px 0 20px 0;
    }
  }
}
</style>