Question

使用Puppeteer，我能够导航到某个视频src URL，并且MP4（使用chronium的自定义版本）可以正常播放。

现在：我希望能够获取正在播放的视频数据并将其发送到node.js中的某种缓冲区，该缓冲区可以另存为文件或通过websocket发送给客户端或作为响应发送等。 ....但我不确定该怎么做，我所拥有的只是视频播放。

我不能仅将URL发送到node.js，因为要观看视频文件，您必须经历整个伪造者爬网过程（这不仅是静态URL，它还取决于该浏览器会话，因此只有操纵者可以查看它。

SO：我该怎么办才能获得指向nodeJS中文件（或缓冲区）的src URL？这是我当前的代码，如果有帮助的话：

var puppeteer = require("puppeteer-core");
var http=require("https");
var fs=require("fs");
var fetch=require("fetch-node");
(async() => {
    var browser = await puppeteer.launch({
        executablePath:"./cobchrome/chrome.exe"
    });
    console.log("Got browser", browser);
    var page = await browser.newPage();

    console.log(page,"got page");
    var agentStr = `Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0`;
    var agent = await page.setUserAgent(agentStr);
    console.log(agent, "Set the user agent");
 //   await page.goto("https://drive.google.com/file/d/17tkL8jPlBIh5XtcX_tNhyDV5nSX8v7f8/preview");
    await page.goto("https://docs.google.com/file/d/1Cyuh41yNfYZU_zL-MHLf_EPJCYnlT7oJ/preview?enablejsapi=1&playerapiid=player4");
    console.log("went to page..");
    await page._client.send('Page.setDownloadBehavior', {behavior: 'allow', downloadPath: './downloadscob/'})
    await page.screenshot({path:"shots/onopen.png"});
  //  var btn = await page.$(".ndfHFb-c4YZDc ndfHFb-c4YZDc-AHmuwe-Hr88gd-OWB6Me ndfHFb-c4YZDc-vyDMJf-aZ2wEe ndfHFb-c4YZDc-i5oIFb ndfHFb-c4YZDc-e1YmVc ndfHFb-c4YZDc-TSZdd");
  //  var tst = await page.$("#start-of-content");
    var clickEl = ".ndfHFb-c4YZDc-aTv5jf-bVEB4e-RJLb9c";
    var newClickID = ".ndfHFb-c4YZDc-aTv5jf-NziyQe-LgbsSe";
    var clicker = await page.waitForSelector(newClickID);
    console.log(clicker,"got clicker");
    await page.screenshot({path:"shots/ongotclicker.png"});
    await page.click(clickEl);
    console.log("clicked")
    await page.screenshot({path:"shots/onclicked.png"});
    var frame = await page.waitForSelector("iframe[id=drive-viewer-video-player-object-0]");
    console.log(frame, "got video frame");
    await page.screenshot({path:"shots/ongotframe.png"});



    var cf = await frame.contentFrame();
    await page.screenshot({path:"shots/oncf.png"});
    console.log(cf, "got content frame");
    await cf.waitFor(() => !!document.querySelector("video"))
    await page.screenshot({path:"shots/videoappeared.png"});
    //await cf.waitFor(30000);
 //   var videos = await cf.$("video");
//    console.log(videos, videos.length, "all videos");
    var video = await cf.$("video");
    await page.screenshot({path:"shots/selectedvideo.png"});
    var videoEl = await cf.evaluate(

        v =>{
            var result = {};
            for(var k in v) {
                result[k] = v[k];
            }
            return result;
        },
        video
    );
    var src = videoEl.src;

    var file = fs.createWriteStream("down.mp4");
    console.log("starting to stream");
    var req = http.get(src, r => {
        console.log("finished pipin");
        r.pipe(file); //I REALLY thought this would work but it doesn't do anything
    });
    var start = Date.now();
    await page.screenshot({path:"shots/evalled_vido.png"});
    console.log("$$###VIDEO SOURCE::", "time it took", src);
    await page.goto(src);
    await page.screenshot({path:"shots/wentToNewPage.png"});
  //  await page.waitFor(5000);
    await page.screenshot({path:"shots/maybeItsPlayingNow.png"});
    console.log("ABOUT t oFETHC wit H SOURCE", src)
    var content = await page.content();
    fs.writeFile("outputagain.txt", content, (re) => {
        console.log("saved it?");
    })
    console.log(content);

 // await browser.close();
})();

当前page.content（）最后只是获取页面的HTML内容，没有任何二进制数据。......

播放<视频>到node.js缓冲区的木偶流

0 个答案: