youtube-dl

Download videos from YouTube and other websites. More information: http://rg3.github.io/youtube-dl/.

• Download a video or playlist:
  youtube-dl '{{https://www.youtube.com/watch?v=oHg5SJYRHA0}}'
• List all formats that a video or playlist is available in:
  youtube-dl --list-formats '{{https://www.youtube.com/watch?v=Mwa0_nE9H7A}}'
• Download a video or playlist at a specific quality:
  youtube-dl --format "{{best[height<=480]}}" '{{https://www.youtube.com/watch?v=oHg5SJYRHA0}}'
• Download the audio from a video and convert it to an MP3:
  youtube-dl -x --audio-format {{mp3}} '{{url}}'
• Download the best quality audio and video and merge them:
  youtube-dl -f bestvideo+bestaudio '{{url}}'
• Download video(s) as MP4 files with custom filenames:
  youtube-dl --format {{mp4}} -o "{{%(playlist_index)s-%(title)s by %(uploader)s on %(upload_date)s in %(playlist)s.%(ext)s}}" '{{url}}'
• Download a particular language's subtitles along with the video:
  youtube-dl --sub-lang {{en}} --write-sub '{{https://www.youtube.com/watch?v=Mwa0_nE9H7A}}'
• Download a playlist and extract MP3s from it:
  youtube-dl -f "bestaudio" --continue --no-overwrites --ignore-errors --extract-audio --audio-format mp3 -o "%(title)s.%(ext)s" {{url_to_playlist}}