如何从 YouTube 下载音乐而不是视频电影？

Question

我想知道是否有任何程序可以从 YouTube 下载音乐，而不是视频，只是音频，例如 Windows 中的 DVDvideosoft。

Answer 1

一个名为的 shell 脚本youtube-dl可以在 1 步中完成此操作。这取决于ffmpeg，所以你应该先安装它。

sudo apt-get install ffmpeg
wget https://github.com/rg3/youtube-dl/raw/2012.02.27/youtube-dl 
chmod +x youtube-dl
./youtube-dl -t --extract-audio --audio-format mp3 YOUTUBE_URL_HERE

关于从 YouTube 选择下载质量的额外信息，来自手册页：

 -f FMT, --format=FMT
       Specify the video format (quality) in which to download the video.

       For youtube.com, in particular, the meaning of the format codes is given as:

       WebM video at 480p: 43
       WebM video at 720p: 45
       H264 video in MP4 container at 480p: 18
       H264 video in MP4 container at 720p: 22
       H264 video in MP4 container at 1080p: 37
       H264 video in FLV container at 360p: 34
       H264 video in FLV container at 480p: 35
       H263 video at 240p: 5
       3GP video: 17

       Note that not all videos are available in all formats and that other sites supported by youtube-dl may have different conventions for their video formats.

       By default, youtube-dl will download the best available format; if you want to download the worst format to save bandwidth and time, use "-f" worst.

所以添加-f 18以获得 480p 的 h264 mp4