Initial commit

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+*.mp4

README.md

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+# youtube-downloader

index.js

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+const fs = require('fs');
+const youtubedl = require('youtube-dl');
+const path = require('path');
+const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path;
+const ffmpeg = require('fluent-ffmpeg');
+
+let youtubeDownloader = {
+    url: null,
+    quality: 0,
+    finalOutput: null,
+    videoFileName: null,
+    audioFileName: null,
+    videoTag: null,
+    audioTag: null,
+    downloader(tag) {
+        let download = youtubedl(this.url,
+        ['-f', tag], { cwd: __dirname });
+
+        return download
+    },
+    downloadVideo () {
+        let size = 0
+        let pos = 0
+
+        let d = this.downloader(this.videoTag)
+        d.on('info', (info) => {
+            console.log('Video Download started');
+            console.log('size: ' + info.size);
+            size = info.size;
+
+            this.finalOutput = path.join(__dirname, info._filename)
+            this.videoFileName = path.join(__dirname, info.size.toString() + "." + info.ext)
+            d.pipe(fs.createWriteStream(this.videoFileName));
+        });
+
+        d.on('data', function data(chunk) {
+            pos += chunk.length;
+
+            if (size) {
+                var percent = (pos / size * 100).toFixed(2);
+                process.stdout.cursorTo(0);
+                process.stdout.clearLine(1);
+                process.stdout.write(percent + '%');
+            }
+        });
+
+        return d;
+    },
+    downloadAudio() {
+        let size = 0
+        let pos = 0
+
+        let d = this.downloader(this.audioTag)
+        d.on('info', (info) => {
+            console.log('Audio Download started');
+            console.log('size: ' + info.size);
+            size = info.size;
+
+            this.audioFileName = path.join(__dirname, info.size.toString() + "." + info.ext)
+            d.pipe(fs.createWriteStream(this.audioFileName));
+        });
+
+        d.on('data', function data(chunk) {
+            pos += chunk.length;
+
+            if (size) {
+                var percent = (pos / size * 100).toFixed(2);
+                process.stdout.cursorTo(0);
+                process.stdout.clearLine(1);
+                process.stdout.write(percent + '%');
+            }
+        });
+
+        return d;
+    },
+    checkFileTag(callback) {
+        youtubedl.getInfo(this.url, (err, info) => {
+            if (err) { throw err; }
+            for (let index in info.formats) {
+                ((index, format) => {
+                    if (format.ext === "mp4" && !format.resolution) {
+                        if (format.height.toString() === this.quality) {
+                            this.videoTag = format.format_id
+                        }
+                    }
+                    if (format.ext === "m4a" && !format.resolution) {
+                        this.audioTag = format.format_id
+                    }
+                })(index, info.formats[index])
+            }
+            callback()
+        });
+    },
+    start(u, q) {
+        this.url = u
+        this.quality = q
+        this.checkFileTag(() => {
+            this.downloadVideo().on("end", () => {
+                this.downloadAudio().on("end", () => {
+                    console.log('\nFinish Dowloading, processing...');
+                    ffmpeg.setFfmpegPath(ffmpegPath);
+                    let command = ffmpeg(this.videoFileName).videoCodec('copy').input(this.audioFileName).audioCodec('copy').saveToFile(this.finalOutput)
+
+                    command.on('end', () => {
+                        fs.unlink(this.videoFileName, () => {});
+                        fs.unlink(this.audioFileName, () => {});
+                        console.log('Finished processing');
+                    })
+                })
+            })
+        })
+
+    }
+}
+
+youtubeDownloader.start('https://www.youtube.com/watch?v=KpiQ9lI5aWc', '1080')