el-upload上传视频获取视频宽高、时长信息(多文件、单文件)

<el-upload
    :on-success="handleSuccess"
></el-upload>

async handleSuccess(res, file) {
    let videoInfo = "";
    // 防止触发两次
    if (file.status !== "success") return;
    if (file.raw.type === "video/mp4") {
      videoInfo = await this.getFileDuration(file.raw);
    } else {
      videoInfo = "";
    }
    console.log('时长', videoInfo)
},

// 获取视频时长
    getFileDuration(content) {
      return new Promise((resolve) => {
        const videoElement = document.createElement("video");
        videoElement.src = URL.createObjectURL(content);
        videoElement.addEventListener("loadedmetadata", function () {
          resolve(videoElement.duration);
        });
      });
    },