====== Youtube ======

===== Kids Whitelist =====
[[youtube kids whitelist]]

===== Audio-Download =====
Mittlerweile gibt es sehr interessante Kanäle auf Youtube. 
Für Viel-Autofahrer sind aber oft die Audiodaten in offline-form besonders interessant. 

Helfen kann hier das tool youtube-dl, einem kleinen Konsolenprogramm. \\

==== Installation ====
  sudo apt install youtube-dl libav-tools 
  
Hier eine Beispielhafte Befehlszeile, um den gesamten Kanal "KenFM" als Vorbis-Ogg herunter zu laden: 
  youtube-dl -f 'bestaudio' -x --audio-format vorbis --audio-quality 4 --download-archive archive.txt --output '%(upload_date)s %(title)s.%(ext)s' https://www.youtube.com/user/wwwKenFMde/videos?flow=list&view=0&sort=dd&live_view=500

{{ ::2016-06-19_001.png?nolink |}}

==== Auszug aus der man-page ====
<code>
youtube-dl

--download-archive FILE
              Download only videos not listed in the archive file.  Record the IDs of all downloaded videos in it.

--dateafter DATE
              Download only videos uploaded on or after this date (i.e.  inclusive)
-r, --rate-limit LIMIT
     Maximum download rate in bytes per second (e.g.  50K or 4.2M)
-x, --extract-audio
      Convert video files to audio-only files (requires ffmpeg or avconv and ffprobe or avprobe)
--audio-format FORMAT
      Specify audio format: "best", "aac", "vorbis", "mp3", "m4a", "opus", or "wav"; "best" by default

--audio-quality QUALITY
      Specify ffmpeg/avconv audio quality, insert a value between 0 (better) and 9 (worse) for VBR or a  specific  bitrate
      Embed thumbnail in the audio as cover art

-o, --output TEMPLATE
      Output filename template.  Use %(title)s to get the title, %(uploader)s for the uploader name,  %(uploader_id)s  for
      the uploader nickname if different, %(autonumber)s to get an automatically incremented number, %(ext)s for the file‐
      name extension, %(format)s for the format description (like "22 - 1280x720" or "HD"), %(format_id)s for  the  unique
      id  of  the  format (like YouTube's itags: "137"), %(upload_date)s for the upload date (YYYYMMDD), %(extractor)s for
      the provider (youtube, metacafe, etc), %(id)s for the video id, %(playlist_title)s, %(playlist_id)s, or %(playlist)s
      (=title  if  present,  ID  otherwise)  for  the playlist the video is in, %(playlist_index)s for the position in the
      playlist.  %(height)s and %(width)s for the width and height of the video format.  %(resolution)s for a textual  de‐
      scription of the resolution of the video format.  %% for a literal percent.  Use - to output to stdout.  Can also be
      used  to  download  to  a  different   directory,   for   example   with   -o   '/my/downloads/%(uploader)s   /%(ti‐
      tle)s-%(id)s.%(ext)s' .
    --output '%(upload_date)s %(title)s.%(ext)s'

requires:
ffmpeg or avconv and ffprobe or avprobe


// test: könig der löwen - der ewige kreis:
youtube-dl -f 'bestaudio' -x --audio-format vorbis --audio-quality 4 https://www.youtube.com/watch?v=7QgL6CyoQaI

youtube-dl -f 'bestaudio' -x --audio-format vorbis --audio-quality 4 --download-archive archive.txt --output '%(upload_date)s %(title)s.%(ext)s' https://www.youtube.com/user/wwwKenFMde/videos?flow=list&view=0&sort=dd&live_view=500

</code>


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