1、安装npm install @ffmpeg/ffmpeg@0.10.0 @ffmpeg/core@0.9.8 video.js@8.12.0

2、在vue.config.js中devServer配置

 headers: {
            // 如果需要用到ffmpeg确保ShareArrayBuffer能够正常使用,可能会有安全隐患
            'Cross-Origin-Embedder-Policy': 'require-corp',
            'Cross-Origin-Opener-Policy': 'same-origin',
        }

3、拷贝下面三个文件到public静态文件夹下

4、创建convert文件

import FFmpeg from "@ffmpeg/ffmpeg";
const { createFFmpeg, fetchFile } = FFmpeg;
const ffmpeg = createFFmpeg({
    corePath: "/ffmpeg-core.js",
    log: true
})

export const transCode = async (url = "") => {
    if (!url) {
        return;
    }
    if (!ffmpeg.isLoaded()) {
        await ffmpeg.load();
    }

    ffmpeg.FS('writeFile', 'name', await fetchFile(url));
    await ffmpeg.run('-i', 'name', 'output.mp4');
    const data = ffmpeg.FS('readFile', 'output.mp4');
    return URL.createObjectURL(new Blob([data.buffer], { type: 'video/mp4' }))
}

5、创建播放组件

<script>
import videojs from "video.js";
import "video.js/dist/video-js.css";
import { transCode } from "./convert";
export default {
  name: "VideoPlayer",
  props: {
    height: {
      default: "100%",
    },
    width: {
      default: "100%",
    },
  },
  data() {
    return {
      player: null,
      options: {
        autoplay: "muted",
        controls: true,
        loop: true,
        muted: true,
        poster: "", //播放前加载图片
        preload: "auto", //是否预加载
        src: "", //视频地址
      },
    };
  },
  mounted() {
    this.init();
  },
  methods: {
    async init() {
      this.player = videojs(this.$refs.player, this.options);
      const buffer = await transCode(/**地址 */);
      this.player.src({
        type: "video/mp4",
        src: buffer,
      });
      this.player.ready(() => {});
    },
    destory() {
      this.player && this.player.dispose();
    },
  },
};
</script>
<template>
  <div class="video-player" :style="{ width, height }">
    <video class="player video-js vjs-default-skin" ref="player"></video>
  </div>
</template>
<style scoped lang="scss">
.video-player {
  position: relative;
  .player {
    height: 100%;
    width: 100%;
  }
}
</style>

注：

1、只能处理小视频，容易造成内存溢出；

2、等待时间较长，不是最优解；