今天给大家分享一个使用TypeScript和node-fetch库的采集程序，主要用于采集百度的相关视频，代码非常经典，一起来看看吧。
```typescriptimport fetch from 'node-fetch';const getProxy = async (): Promise => {const response = await fetch('https://www.duoip.cn/get_proxy');const data = await response.text();return data.trim();};const downloadVideo = async (url: string, proxy: string): Promise => {const fetchOptions = {method: 'GET',headers: {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36','Proxy-Connection': 'keep-alive','Pragma': 'no-cache','Cache-Control': 'no-cache',},};if (proxy) {fetchOptions.agent = new fetch.Agent({http: {agent: new fetch.HttpAgent({host: proxy.split(':')[0],port: parseInt(proxy.split(':')[1], 10),protocol: 'http:',}),},});}const response = await fetch(url, fetchOptions);const buffer = await response.buffer();const videoData = Buffer.from(buffer).toString('base64');// 保存视频数据到文件const fs = require('fs');fs.writeFileSync('output.mp4', Buffer.from(videoData, 'base64'));};(async () => {const proxy = await getProxy();const videoUrl = 'https://www.baidu.com/xxx/xxx.mp4'; // 请替换为目标视频的实际链接await downloadVideo(videoUrl, proxy);console.log('视频下载完成！');})();```
上面这段代码在执行过程中，首先获取代理，然后使用node-fetch将视频下载到本地。要注意的是，代码主要用于示例教学，在实际使用前，请遵守相关法律法规，尊重版权所有者的权益。
