This is a gem to download audio from Youtube.

It will work on Unix only because it uses cd ... sloppy, I know ...

It has one external dependency, youtube-dl, and no bundled Ruby dependencies. Tested with recent ruby version (>= 2.3) but probably works fine with older versions such as 1.9.3

There are two methods it provides. Both are class methods on YoutubeAudioDownloader.

1. .download_audio(url, outdir, filename, opts={})

2. .download_playlist(url, outdir, opts={})

The opts accepts the following keys (can be strings or symbols)

• quality: Int (default: 3, which is pretty low, so increase if you're an audiophile)
• format: String (default: "mp3")
• prefer_ffmpeg: Boolean (default: true)

There is also a executable called ytaudio which offers get(url, out_dir, filename) and get_playlist(url, out_dir) commands.