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how to donload a video form Youtube using ytdl-core in MP4 format
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| /** | |
| * Checks if the title is valid for being a file name, otherwise, removes the | |
| * characters that invalidates it. | |
| * A valid file name, is a string that does not contain any of the following: | |
| * / \ : * ? " < > | | |
| * @param {string} title | |
| * @return {string} | |
| * @private | |
| */ | |
| validateFileName_(title) { | |
| return title.replace(/[/\:*?"<>|]]/, ''); | |
| } | |
| /** | |
| * @param {string} userProvidedPath | |
| * @param {string} title | |
| * @private | |
| */ | |
| downloadVideoAsMp4_(userProvidedPath, title) { | |
| return new Promise((resolve, reject) => { | |
| const filename = this.validateFileName_(title); | |
| let fullPath = `${userProvidedPath}/${filename}.mp4`; | |
| // Create a reference to the stream of the video being downloaded. | |
| let videoObject = Ytdl(this.youtubeUrl_, { | |
| filter: 'audioonly', | |
| quality: 'highestaudio' | |
| }); | |
| videoObject | |
| .on('progress', (chunkLength, downloaded, total) => { | |
| //TODO: send event to UI to update progress | |
| }); | |
| videoObject | |
| .pipe(fs.createWriteStream(fullPath)) | |
| .on('finish', () => { | |
| setTimeout(() => { | |
| resolve({ | |
| filePath: fullPath, | |
| folderPath: userProvidedPath, | |
| fileTitle: `${title}.mp3`, | |
| }); | |
| }, 1000); | |
| }); | |
| }); | |
| } |
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