node.js - YouTube - MP4 到 MP3 搞砸了

Question

它应该下载播放列表中的所有视频并将它们转换为 mp3。但这所做的只是使 mp4 和 1 个空 mp3 的数字高于最大 mp4。我的新手大脑不知道如何解决这个问题......

var ytpl = require('ytpl');
var fs = require('fs-extra');
var path = require('path');
var ffmpeg = require('fluent-ffmpeg');
var binaries = require('ffmpeg-static');
var ytdl = require('ytdl-core');

var output_dir = path.join(__dirname+"/dl");

ytpl("PL8n8S4mVUWvprlN2dCAMoIo6h47ZwR_gn", (err, pl) => {
    if(err) throw err;

    let c = 0;

    pl.items.forEach((i) => {
        ytdl(i.url_simple+"", { filter: 'audioonly' }).pipe(fs.createWriteStream(output_dir+"/"+c+".mp4")).on('finish', () => {
            console.log("Finished MP4 DL, starting conversion...");
            ffmpeg(output_dir+"/"+c+".mp4")
                .setFfmpegPath(binaries.path)
                .format('mp3')
                .audioBitrate(320)
                .output(fs.createWriteStream(output_dir+"/"+c+".mp3"))
                .on('end', () => {
                    console.log("Finished MP3 Convert...");
                })
                .run();
        });
        c++;
    });

});

Answer 1

使用 ytdl-core 的示例进行了修复Link
固定代码:

var ytpl = require('ytpl');
var fs = require('fs-extra');
var path = require('path');
var ffmpeg = require('fluent-ffmpeg');
var binaries = require('ffmpeg-static');
var sanitize = require('sanitize-filename');
var ytdl = require('ytdl-core');

var output_dir = path.join(__dirname+"/dl");

ytpl("PL8n8S4mVUWvprlN2dCAMoIo6h47ZwR_gn", (err, pl) => {
    if(err) throw err;

    for (const i of pl.items) {
        let stream = ytdl(i.id, {
            filter: 'audioonly'
        });

        ffmpeg(stream)
            .audioBitrate(320)
            .save(`${output_dir}/${sanitize(i.title + " (by " + i.author.name + ")")}.mp3`)
            .on('end', () => {
                console.log("Done! Downloaded \""+i.title + " (by " + i.author.name + ")"+"\"");
            });
    }
});